Coastal Waters Forecast
Issued by NWS Boston, MA

Home |  Current Version |  Previous Version |  Text Only |  Print | Product List |  Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
701
FZUS51 KBOX 120505
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
104 AM EDT Sat Sep 12 2026

Coastal waters from the Merrimack River MA to Watch Hill RI out
to 60 NM

ANZ200-121800-
104 AM EDT Sat Sep 12 2026

.Synopsis for Massachusetts and Rhode Island coastal waters...
High pres builds across the waters today into Sat. This high will
shift east of the waters by Sun as a warm front crosses the region.
A cold front quickly follows Sun night with high pres building
across the waters Mon into Tue.

$$

ANZ250-121800-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
104 AM EDT Sat Sep 12 2026

.REST OF TONIGHT...NE winds 5 to 10 kt with gusts up to 20 kt.
Seas around 2 ft. Wave Detail: N 1 foot at 4 seconds and S 1 foot
at 7 seconds.
.SAT...E winds 5 to 10 kt, becoming SE 10 to 15 kt with gusts up
to 20 kt in the afternoon. Seas around 2 ft. Wave Detail: N
1 foot at 3 seconds and S 1 foot at 6 seconds.
.SAT NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 3 ft. Wave Detail: SE 2 ft at 3 seconds and N 1 foot at
3 seconds.
.SUN...SE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. Wave Detail: SE 2 ft at 4 seconds and W 1 foot at
3 seconds. Patchy fog. Showers. Vsby 1 to 3 NM, decreasing to
1 NM or less in the afternoon.
.SUN NIGHT...S winds 5 to 10 kt, becoming W with gusts up to
20 kt after midnight. Seas 2 to 3 ft. Wave Detail: SE 2 ft at
5 seconds and SW 1 foot at 3 seconds. Patchy fog. Vsby 1 NM or
less, increasing to 1 to 3 NM after midnight.
.MON...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. Wave Detail: SE 3 ft at 6 seconds and SE 3 ft at 9 seconds.
Patchy fog in the morning.
.MON NIGHT...N winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 3 ft.
.TUE THROUGH WED NIGHT...SW winds 10 to 15 kt with gusts up to
20 kt. Seas 2 to 3 ft.

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.

$$

ANZ251-121800-
Massachusetts Bay and Ipswich Bay-
104 AM EDT Sat Sep 12 2026

.REST OF TONIGHT...NE winds 5 to 10 kt. Seas around 2 ft. Wave
Detail: N 1 foot at 3 seconds and S 1 foot at 5 seconds.
.SAT...E winds around 5 kt, becoming SE 10 to 15 kt with gusts up
to 20 kt in the afternoon. Seas 1 foot or less, then around 2 ft
in the afternoon. Wave Detail: N 1 foot at 3 seconds and S 1 foot
at 5 seconds, becoming NW 1 foot at 2 seconds and NE 1 foot at
3 seconds.
.SAT NIGHT...S winds around 10 kt. Gusts up to 20 kt in the
evening. Seas around 2 ft. Wave Detail: E 2 ft at 3 seconds and
NW 1 foot at 3 seconds.
.SUN...SE winds around 10 kt. Gusts up to 20 kt in the afternoon.
Seas around 2 ft. Wave Detail: SE 2 ft at 3 seconds and W 1 foot
at 3 seconds. Patchy fog. Showers. Vsby 1 to 3 NM, decreasing to
1 NM or less in the afternoon.
.SUN NIGHT...S winds 5 to 10 kt, becoming W after midnight. Seas
around 2 ft. Wave Detail: SE 2 ft at 4 seconds and SW 1 foot at
3 seconds. Patchy fog. Vsby 1 NM or less, increasing to 1 to 3 NM
after midnight.
.MON AND MON NIGHT...N winds 10 to 15 kt with gusts up to 20 kt.
Seas around 2 ft. Wave Detail: N 2 ft at 4 seconds and SE 2 ft at
5 seconds.
.TUE THROUGH WED NIGHT...SW winds 10 to 15 kt. Seas around 2 ft.

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.

$$

ANZ231-121800-
Cape Cod Bay-
104 AM EDT Sat Sep 12 2026

.REST OF TONIGHT...NE winds 5 to 10 kt. Seas around 2 ft. Wave
Detail: N 1 foot at 4 seconds and S 1 foot at 6 seconds.
.SAT...E winds 5 to 10 kt, becoming SE with gusts up to 20 kt in
the afternoon. Seas 1 foot or less, then around 2 ft in the
afternoon. Wave Detail: N 1 foot at 3 seconds and S 1 foot at
6 seconds, becoming N 1 foot at 3 seconds and SE 1 foot at
6 seconds.
.SAT NIGHT...S winds around 10 kt. Seas around 2 ft. Wave Detail:
SE 1 foot at 2 seconds and N 1 foot at 3 seconds.
.SUN...SE winds around 10 kt with gusts up to 20 kt. Seas around
2 ft. Wave Detail: S 1 foot at 2 seconds and NE 1 foot at
3 seconds. Showers. Patchy fog in the afternoon with vsby 1 NM or
less.
.SUN NIGHT...SW winds 5 to 10 kt, becoming W after midnight. Seas
1 foot or less, then around 2 ft after midnight. Wave Detail: SE
1 foot at 3 seconds and SW 1 foot at 4 seconds, becoming W 1 foot
at 2 seconds and SE 1 foot at 4 seconds. Patchy fog. Vsby 1 NM or
less, increasing to 1 to 3 NM after midnight.
.MON...NW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to
3 ft. Wave Detail: NW 1 foot at 3 seconds and SE 1 foot at
6 seconds. Patchy fog in the morning. A chance of showers in the
morning.
.MON NIGHT...N winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 3 ft.
.TUE THROUGH WED NIGHT...SW winds 10 to 15 kt with gusts up to
20 kt. Seas around 2 ft.

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.

$$

ANZ254-121800-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 NM-
104 AM EDT Sat Sep 12 2026

.REST OF TONIGHT...N winds 5 to 10 kt. Seas 2 to 3 ft. Wave
Detail: S 2 ft at 6 seconds and N 1 foot at 5 seconds.
.SAT...E winds 5 to 10 kt, becoming SE in the afternoon. Seas
around 2 ft. Wave Detail: N 1 foot at 5 seconds and S 1 foot at
6 seconds.
.SAT NIGHT...S winds around 10 kt with gusts up to 20 kt. Seas
around 2 ft. Wave Detail: S 2 ft at 5 seconds and N 1 foot at
4 seconds.
.SUN...SE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. Wave Detail: S 3 ft at 5 seconds and N 1 foot at 3 seconds.
Showers likely in the morning, then showers in the afternoon.
Patchy fog in the afternoon with vsby 1 NM or less.
.SUN NIGHT...SW winds 10 to 15 kt, becoming W 5 to 10 kt after
midnight. Gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft
at 6 seconds and SE 2 ft at 9 seconds. Patchy fog. Vsby 1 NM or
less, increasing to 1 to 3 NM after midnight.
.MON...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. Wave Detail: SE 3 ft at 8 seconds and NW 2 ft at 3 seconds.
Patchy fog in the morning with vsby 1 to 3 NM.
.MON NIGHT...N winds 10 to 15 kt, increasing to 15 to 20 kt after
midnight. Seas 2 to 3 ft.
.TUE THROUGH WED NIGHT...SW winds 10 to 15 kt with gusts up to
20 kt. Seas 2 to 3 ft.

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.

$$

ANZ255-121800-
Coastal Waters extending out to 25 NM South of Marthas Vineyard
and Nantucket-
104 AM EDT Sat Sep 12 2026

.REST OF TONIGHT...N winds 5 to 10 kt. Seas around 2 ft. Wave
Detail: S 2 ft at 6 seconds and N 1 foot at 4 seconds.
.SAT...E winds 5 to 10 kt, becoming SE in the afternoon. Seas
around 2 ft. Wave Detail: S 2 ft at 6 seconds and N 1 foot at
4 seconds.
.SAT NIGHT...SE winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 3 ft. Wave Detail: S 2 ft at 5 seconds and N 1 foot at
4 seconds.
.SUN...SE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. Wave Detail: S 3 ft at 5 seconds and NE 1 foot at
3 seconds. Patchy fog. Showers likely in the morning. Showers in
the afternoon. Vsby 1 to 3 NM, decreasing to 1 NM or less in the
afternoon.
.SUN NIGHT...W winds 5 to 10 kt. Gusts up to 20 kt in the
evening. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 5 seconds and W
1 foot at 3 seconds. Patchy fog. Vsby 1 NM or less, increasing to
1 to 3 NM after midnight.
.MON...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. Wave Detail: SE 3 ft at 6 seconds and NW 2 ft at 3 seconds.
Patchy fog in the morning. A chance of showers in the morning
with vsby 1 to 3 NM.
.MON NIGHT...N winds 10 to 15 kt, becoming NE 15 to 20 kt after
midnight. Seas 2 to 3 ft.
.TUE THROUGH WED NIGHT...SW winds 10 to 15 kt with gusts up to
20 kt. Seas 2 to 3 ft.

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.

$$

ANZ256-121800-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 NM South of Block Island-
104 AM EDT Sat Sep 12 2026

.REST OF TONIGHT...N winds 5 to 10 kt. Seas 2 to 3 ft. Wave
Detail: S 2 ft at 6 seconds and N 1 foot at 3 seconds.
.SAT...E winds 5 to 10 kt, becoming SE in the afternoon. Seas
around 2 ft. Wave Detail: S 2 ft at 6 seconds and N 1 foot at
3 seconds.
.SAT NIGHT...S winds 5 to 10 kt, becoming SE 10 to 15 kt after
midnight. Gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: E 2 ft
at 5 seconds and SE 2 ft at 10 seconds.
.SUN...SE winds 10 to 15 kt, becoming S in the afternoon. Gusts
up to 20 kt. Seas 3 to 4 ft. Wave Detail: SE 4 ft at 5 seconds
and SE 1 foot at 10 seconds. Patchy fog. Showers. Vsby 1 NM or
less.
.SUN NIGHT...W winds 5 to 10 kt. Seas around 3 ft. Wave Detail:
SE 3 ft at 6 seconds and W 1 foot at 3 seconds. Patchy fog. Vsby
1 NM or less.
.MON...NW winds 15 to 20 kt, becoming N 10 to 15 kt in the
afternoon. Seas 2 to 3 ft. Wave Detail: S 3 ft at 6 seconds and N
2 ft at 4 seconds. A chance of showers in the morning.
.MON NIGHT...N winds 15 to 20 kt. Seas 2 to 3 ft.
.TUE THROUGH WED NIGHT...SW winds 10 to 15 kt with gusts up to
20 kt. Seas 2 to 3 ft.

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.

$$

ANZ232-121800-
Nantucket Sound-
104 AM EDT Sat Sep 12 2026

.REST OF TONIGHT...N winds 5 to 10 kt. Seas around 2 ft. Wave
Detail: N 1 foot at 3 seconds and S 1 foot at 6 seconds.
.SAT...E winds 5 to 10 kt, becoming SE in the afternoon. Seas
around 2 ft in the morning, then 1 foot or less. Wave Detail: N
1 foot at 3 seconds and S 1 foot at 6 seconds, becoming N 1 foot
at 3 seconds and E 1 foot at 3 seconds.
.SAT NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 3 ft. Wave Detail: S 2 ft at 3 seconds and NW 1 foot at
3 seconds.
.SUN...SE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. Wave Detail: SE 2 ft at 3 seconds and NW 1 foot at
3 seconds. Patchy fog. Showers. Vsby 1 to 3 NM, decreasing to
1 NM or less in the afternoon.
.SUN NIGHT...W winds 5 to 10 kt. Gusts up to 20 kt in the
evening. Seas around 2 ft. Wave Detail: S 2 ft at 4 seconds and
SE 1 foot at 10 seconds. Patchy fog. Vsby 1 NM or less,
increasing to 1 to 3 NM after midnight.
.MON...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. Wave Detail: NW 2 ft at 3 seconds and SE 1 foot at
6 seconds. Patchy fog in the morning. A chance of showers in the
morning with vsby 1 to 3 NM.
.MON NIGHT...N winds 15 to 20 kt. Seas 2 to 3 ft.
.TUE THROUGH WED NIGHT...SW winds 10 to 15 kt with gusts up to
20 kt. Seas around 2 ft.

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.

$$

ANZ233-121800-
Vineyard Sound-
104 AM EDT Sat Sep 12 2026

.REST OF TONIGHT...N winds 5 to 10 kt. Seas around 2 ft. Wave
Detail: SW 2 ft at 6 seconds and N 1 foot at 3 seconds.
.SAT...E winds 5 to 10 kt, becoming SE in the afternoon. Seas
around 2 ft. Wave Detail: SW 2 ft at 6 seconds and N 1 foot at
3 seconds.
.SAT NIGHT...S winds around 10 kt. Gusts up to 20 kt after
midnight. Seas around 2 ft. Wave Detail: NE 1 foot at 3 seconds
and S 1 foot at 4 seconds.
.SUN...SE winds around 10 kt. Gusts up to 20 kt in the morning.
Seas around 2 ft. Wave Detail: SE 2 ft at 4 seconds and NW 1 foot
at 3 seconds. Patchy fog. Showers. Vsby 1 to 3 NM, decreasing to
1 NM or less in the afternoon.
.SUN NIGHT...W winds 5 to 10 kt. Seas around 2 ft. Wave Detail:
SW 2 ft at 6 seconds and SW 1 foot at 3 seconds. Patchy fog. Vsby
1 NM or less, increasing to 1 to 3 NM after midnight.
.MON...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. Wave Detail: S 2 ft at 6 seconds and NW 1 foot at
2 seconds. A chance of showers in the morning.
.MON NIGHT...N winds 10 to 15 kt. Gusts up to 20 kt after
midnight. Seas around 2 ft.
.TUE THROUGH WED NIGHT...SW winds 10 to 15 kt. Seas around 2 ft.

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.

$$

ANZ234-121800-
Buzzards Bay-
104 AM EDT Sat Sep 12 2026

.REST OF TONIGHT...N winds around 5 kt. Seas around 2 ft. Wave
Detail: NE 1 foot at 2 seconds and NW 1 foot at 5 seconds.
.SAT...E winds around 5 kt, becoming SE in the afternoon. Seas
around 2 ft. Wave Detail: N 1 foot at 3 seconds and SW 1 foot at
6 seconds.
.SAT NIGHT...S winds around 10 kt. Gusts up to 20 kt after
midnight. Seas around 2 ft. Wave Detail: SE 2 ft at 4 seconds and
NW 1 foot at 2 seconds.
.SUN...SE winds around 10 kt. Gusts up to 20 kt in the morning.
Seas around 2 ft. Wave Detail: NE 2 ft at 3 seconds and S 2 ft at
3 seconds. Patchy fog. Showers. Vsby 1 to 3 NM, decreasing to
1 NM or less in the afternoon.
.SUN NIGHT...W winds 5 to 10 kt. Seas around 2 ft. Wave Detail:
SW 2 ft at 5 seconds and SE 1 foot at 10 seconds. Patchy fog.
Vsby 1 NM or less, increasing to 1 to 3 NM after midnight.
.MON...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. Wave Detail: NW 1 foot at 2 seconds and E 1 foot at
3 seconds. A chance of showers in the morning.
.MON NIGHT...N winds 10 to 15 kt. Seas around 2 ft.
.TUE THROUGH WED NIGHT...SW winds 10 to 15 kt with gusts up to
20 kt. Seas 2 to 3 ft.

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.

$$

ANZ235-121800-
Rhode Island Sound-
104 AM EDT Sat Sep 12 2026

.REST OF TONIGHT...N winds 5 to 10 kt. Seas around 2 ft. Wave
Detail: S 2 ft at 6 seconds and N 1 foot at 3 seconds.
.SAT...NE winds 5 to 10 kt, becoming SE in the afternoon. Seas
around 2 ft. Wave Detail: S 2 ft at 6 seconds and N 1 foot at
3 seconds.
.SAT NIGHT...S winds around 10 kt. Gusts up to 20 kt after
midnight. Seas around 2 ft. Wave Detail: SE 2 ft at 5 seconds and
SE 1 foot at 10 seconds.
.SUN...SE winds 10 to 15 kt. Gusts up to 20 kt in the morning.
Seas 2 to 3 ft. Wave Detail: S 3 ft at 5 seconds and W 2 ft at
5 seconds. Patchy fog. Showers. Vsby 1 to 3 NM, decreasing to
1 NM or less in the afternoon.
.SUN NIGHT...W winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE
3 ft at 5 seconds and SE 2 ft at 10 seconds. Patchy fog. A chance
of showers after midnight. Vsby 1 NM or less.
.MON...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. Wave Detail: SE 3 ft at 5 seconds and NW 2 ft at 3 seconds.
A chance of showers in the morning.
.MON NIGHT...N winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 3 ft.
.TUE THROUGH WED NIGHT...SW winds 10 to 15 kt with gusts up to
20 kt. Seas around 2 ft.

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.

$$

ANZ237-121800-
Block Island Sound-
104 AM EDT Sat Sep 12 2026

.REST OF TONIGHT...N winds 5 to 10 kt. Seas around 2 ft. Wave
Detail: S 2 ft at 6 seconds and N 1 foot at 2 seconds.
.SAT...NE winds 5 to 10 kt, becoming SE in the afternoon. Seas
around 2 ft. Wave Detail: S 2 ft at 6 seconds and NW 1 foot at
2 seconds.
.SAT NIGHT...S winds 5 to 10 kt. Gusts up to 20 kt after
midnight. Seas around 2 ft. Wave Detail: SE 2 ft at 9 seconds and
E 1 foot at 3 seconds.
.SUN...S winds around 10 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft
at 5 seconds and SE 2 ft at 10 seconds. Patchy fog. Showers. Vsby
1 NM or less.
.SUN NIGHT...W winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE
3 ft at 5 seconds and SW 1 foot at 3 seconds. Patchy fog. A
chance of showers after midnight. Vsby 1 NM or less.
.MON...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. Wave Detail: SE 3 ft at 6 seconds and NW 1 foot at
3 seconds. A chance of showers in the morning.
.MON NIGHT...N winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 3 ft.
.TUE THROUGH WED NIGHT...SW winds 10 to 15 kt. Seas around 2 ft.

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.

$$

ANZ230-121800-
Boston Harbor-
104 AM EDT Sat Sep 12 2026

.REST OF TONIGHT...N winds around 5 kt. Waves 1 foot or less.
.SAT...E winds 5 to 10 kt with gusts up to 20 kt. Waves 1 foot or
less, then around 2 ft in the afternoon.
.SAT NIGHT...S winds 5 to 10 kt. Gusts up to 20 kt in the
evening. Waves around 2 ft in the evening, then 1 foot or less.
.SUN...SE winds 5 to 10 kt. Waves around 2 ft. Patchy fog.
Showers. Vsby 1 to 3 NM.
.SUN NIGHT...SW winds around 5 kt. Waves 1 foot or less, then
around 2 ft after midnight. Patchy fog. Vsby 1 NM or less,
increasing to 1 to 3 NM after midnight.
.MON AND MON NIGHT...N winds 10 to 15 kt with gusts up to 20 kt.
Waves around 2 ft.
.TUE THROUGH WED NIGHT...SW winds 5 to 10 kt. Waves 1 foot or
less.

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.

$$

ANZ236-121800-
Narragansett Bay-
104 AM EDT Sat Sep 12 2026

.REST OF TONIGHT...N winds around 5 kt. Waves around 2 ft.
.SAT...NE winds around 5 kt, becoming SE in the afternoon. Waves
around 2 ft.
.SAT NIGHT...S winds 5 to 10 kt. Waves 1 foot or less, then
around 2 ft after midnight.
.SUN...SE winds 5 to 10 kt. Waves around 2 ft. Patchy fog.
Showers. Vsby 1 to 3 NM, decreasing to 1 NM or less in the
afternoon.
.SUN NIGHT...W winds around 5 kt. Waves around 2 ft. Patchy fog.
A chance of showers after midnight. Vsby 1 NM or less.
.MON...NW winds 5 to 10 kt with gusts up to 20 kt. Waves around
2 ft. A chance of showers in the morning.
.MON NIGHT...N winds 5 to 10 kt. Waves around 2 ft.
.TUE THROUGH WED NIGHT...SW winds 10 to 15 kt with gusts up to
20 kt. Waves around 2 ft.

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.

$$

ANZ280-121800-
Ocean Waters from the Merrimack River to Plymouth from 40 to
60 NM-
104 AM EDT Sat Sep 12 2026

.REST OF TONIGHT...NE winds 5 to 10 kt with gusts up to 20 kt.
Seas 2 to 3 ft. Wave Detail: NW 2 ft at 3 seconds and NE 1 foot
at 6 seconds.
.SAT...E winds 5 to 10 kt, becoming SE in the afternoon. Seas
around 2 ft. Wave Detail: N 2 ft at 4 seconds and S 1 foot at
6 seconds.
.SAT NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 3 ft. Wave Detail: S 2 ft at 4 seconds and N 1 foot at
3 seconds.
.SUN...S winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to
4 ft. Wave Detail: SW 3 ft at 4 seconds and NE 1 foot at
3 seconds. Patchy fog. A chance of showers in the morning.
Showers in the afternoon. Vsby 1 to 3 NM.
.SUN NIGHT...S winds 10 to 15 kt, becoming W 5 to 10 kt after
midnight. Gusts up to 20 kt. Seas 3 to 4 ft. Wave Detail: SE 3 ft
at 5 seconds and SW 1 foot at 3 seconds. Patchy fog. Vsby 1 NM or
less, increasing to 1 to 3 NM after midnight.
.MON...NW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to
4 ft. Wave Detail: SE 4 ft at 7 seconds and W 2 ft at 3 seconds.
Patchy fog in the morning.
.MON NIGHT...N winds 15 to 20 kt with gusts up to 25 kt. Seas
3 to 4 ft.
.TUE THROUGH WED NIGHT...SW winds 10 to 15 kt with gusts up to
20 kt. Seas 2 to 4 ft.

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.

$$

ANZ281-121800-
Ocean Waters from Provincetown to Nantucket from 20 to 60 NM-
104 AM EDT Sat Sep 12 2026

.REST OF TONIGHT...NW winds 5 to 10 kt with gusts up to 20 kt.
Seas around 3 ft. Wave Detail: SW 2 ft at 6 seconds and N 1 foot
at 5 seconds.
.SAT...E winds 5 to 10 kt, becoming SE in the afternoon. Seas
2 to 3 ft. Wave Detail: SW 2 ft at 6 seconds and N 1 foot at
5 seconds.
.SAT NIGHT...SE winds 5 to 10 kt with gusts up to 20 kt. Seas
2 to 3 ft. Wave Detail: S 2 ft at 6 seconds and SE 2 ft at
10 seconds.
.SUN...SE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to
4 ft. Wave Detail: S 3 ft at 4 seconds and SE 2 ft at 10 seconds.
Patchy fog. A chance of showers in the morning, then showers in
the afternoon. Vsby 1 to 3 NM, decreasing to 1 NM or less in the
afternoon.
.SUN NIGHT...SW winds 10 to 15 kt, becoming W after midnight.
Gusts up to 20 kt. Seas 3 to 4 ft. Wave Detail: SE 4 ft at
5 seconds and W 2 ft at 4 seconds. Patchy fog. A chance of
showers in the evening. Vsby 1 NM or less, increasing to 1 to
3 NM after midnight.
.MON...NW winds 10 to 15 kt, becoming N 15 to 20 kt in the
afternoon. Gusts up to 25 kt. Seas 3 to 4 ft. Wave Detail: S 4 ft
at 7 seconds and SE 4 ft at 8 seconds. Patchy fog in the morning
with vsby 1 to 3 NM.
.MON NIGHT...N winds 15 to 20 kt with gusts up to 25 kt. Seas
3 to 4 ft.
.TUE THROUGH WED NIGHT...S winds 10 to 15 kt with gusts up to
20 kt. Seas 2 to 4 ft.

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.

$$

ANZ282-121800-
Ocean Waters from Marthas Vineyard to Nantucket from 25 to 60 NM-
104 AM EDT Sat Sep 12 2026

.REST OF TONIGHT...S winds around 5 kt. Seas 2 to 3 ft. Wave
Detail: SW 2 ft at 6 seconds and N 1 foot at 5 seconds.
.SAT...E winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft
at 6 seconds and NW 1 foot at 3 seconds.
.SAT NIGHT...SE winds 5 to 10 kt. Gusts up to 20 kt after
midnight. Seas 2 to 3 ft. Wave Detail: S 2 ft at 5 seconds and N
1 foot at 5 seconds.
.SUN...S winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to
4 ft. Wave Detail: S 4 ft at 6 seconds and SE 2 ft at 10 seconds.
Patchy fog. Showers likely in the morning. Showers in the
afternoon. Vsby 1 to 3 NM, decreasing to 1 NM or less in the
afternoon.
.SUN NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt,
becoming W 5 to 10 kt after midnight. Seas 3 to 4 ft. Wave
Detail: S 4 ft at 6 seconds and SE 2 ft at 9 seconds. Patchy fog.
Vsby 1 NM or less, increasing to 1 to 3 NM after midnight.
.MON...NW winds 10 to 15 kt, becoming N 15 to 20 kt in the
afternoon. Seas around 3 ft. Wave Detail: S 3 ft at 6 seconds and
NW 2 ft at 3 seconds. A chance of showers. Patchy fog in the
morning with vsby 1 to 3 NM.
.MON NIGHT...N winds 15 to 20 kt, becoming NE 10 to 15 kt after
midnight. Seas around 3 ft.
.TUE THROUGH WED NIGHT...S winds 10 to 15 kt with gusts up to
20 kt. Seas 2 to 3 ft.

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.

$$

ANZ283-121800-
Ocean Waters from Montauk NY to Marthas Vineyard from 25 to 60 NM-
104 AM EDT Sat Sep 12 2026

.REST OF TONIGHT...N winds 5 to 10 kt. Seas 2 to 3 ft. Wave
Detail: S 2 ft at 6 seconds and N 1 foot at 3 seconds.
.SAT...E winds 5 to 10 kt, becoming SE in the afternoon. Seas
around 2 ft. Wave Detail: S 2 ft at 6 seconds and N 1 foot at
4 seconds.
.SAT NIGHT...SE winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 4 ft. Wave Detail: S 3 ft at 5 seconds and NE 1 foot at
4 seconds.
.SUN...SE winds 10 to 15 kt, becoming SW in the afternoon. Gusts
up to 25 kt. Seas 3 to 5 ft. Wave Detail: S 5 ft at 6 seconds and
NW 1 foot at 3 seconds. Patchy fog. Showers likely in the
morning. Showers in the afternoon. Vsby 1 NM or less.
.SUN NIGHT...W winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas 3 to 4 ft. Wave Detail: S 4 ft at 6 seconds and SE
1 foot at 3 seconds. Patchy fog. Vsby 1 NM or less, increasing to
1 to 3 NM after midnight.
.MON...NW winds 15 to 20 kt. Seas around 3 ft. Wave Detail: N
3 ft at 5 seconds and S 3 ft at 6 seconds. A chance of showers in
the morning.
.MON NIGHT...N winds 10 to 15 kt, becoming NE 15 to 20 kt after
midnight. Seas around 3 ft.
.TUE THROUGH WED NIGHT...SW winds 10 to 15 kt with gusts up to
20 kt. Seas 2 to 3 ft.

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.

$$

For the latest updates...please visit our webpage at
www.weather.gov/boston

You can follow us on Facebook at
www.facebook.com/us.nationalweatherservice.boston.gov

You can follow us on Twitter at
@NWSBoston