Coastal Waters Forecast
Issued by NWS Boston, MA
Issued by NWS Boston, MA
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217 FZUS51 KBOX 142003 CWFBOX Coastal Waters Forecast for Massachusetts and Rhode Island National Weather Service Boston/Norton MA 403 PM EDT Mon Sep 14 2026 Coastal waters from the Merrimack River MA to Watch Hill RI out to 60 NM ANZ200-150900- 403 PM EDT Mon Sep 14 2026 .Synopsis for Massachusetts and Rhode Island coastal waters... High pres builds from the west tonight into Tue. High then shifts southeast of the waters by Wed-Thu ahead of an approaching cold front. Cold front will cross the waters Thu night into early Fri followed by high pres building across the waters Sat. $$ ANZ250-150900- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 403 PM EDT Mon Sep 14 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 AM EDT TUESDAY... .TONIGHT...N winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. Wave Detail: E 3 ft at 8 seconds and NW 2 ft at 4 seconds. .TUE...NE winds 10 to 15 kt, diminishing to 5 to 10 kt in the afternoon. Seas 2 to 4 ft. Wave Detail: N 3 ft at 7 seconds. .TUE NIGHT...SE winds 5 to 10 kt, becoming S after midnight. Seas 2 to 3 ft. Wave Detail: N 2 ft at 5 seconds. .WED...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E 2 ft at 7 seconds and SW 1 foot at 2 seconds. .WED NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E 2 ft at 9 seconds and S 1 foot at 3 seconds. .THU...S winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E 2 ft at 8 seconds and SW 1 foot at 3 seconds. .THU NIGHT...S winds 5 to 10 kt, becoming SW after midnight. Seas 2 to 3 ft. A chance of showers. .FRI...N winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers. .FRI NIGHT AND SAT...N winds 10 to 15 kt with gusts up to 20 kt, becoming E 5 to 10 kt. Seas 2 to 3 ft. .SAT NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-150900- Massachusetts Bay and Ipswich Bay- 403 PM EDT Mon Sep 14 2026 .TONIGHT...N winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: NE 3 ft at 7 seconds and NW 2 ft at 3 seconds. .TUE...NE winds 10 to 15 kt, becoming E 5 to 10 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: NE 3 ft at 5 seconds and NW 2 ft at 13 seconds. .TUE NIGHT...SE winds 5 to 10 kt, becoming SW after midnight. Seas around 2 ft. Wave Detail: NE 2 ft at 6 seconds and NW 1 foot at 4 seconds. .WED...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SW 1 foot at 2 seconds and E 1 foot at 6 seconds. .WED NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: S 1 foot at 2 seconds and E 1 foot at 9 seconds. .THU...N winds around 5 kt, becoming SE in the afternoon. Seas around 2 ft. Wave Detail: E 2 ft at 8 seconds and SW 1 foot at 2 seconds. .THU NIGHT...S winds 5 to 10 kt, becoming SW after midnight. Seas around 2 ft. A chance of showers. .FRI...N winds 5 to 10 kt. Seas around 2 ft. A chance of showers. .FRI NIGHT AND SAT...N winds 5 to 10 kt, becoming E. Seas around 2 ft. .SAT NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of showers. 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. $$ ANZ231-150900- Cape Cod Bay- 403 PM EDT Mon Sep 14 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 AM EDT TUESDAY... .TONIGHT...N winds 15 to 20 kt, becoming NE 10 to 15 kt after midnight. Gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: N 2 ft at 5 seconds. .TUE...NE winds 10 to 15 kt, diminishing to 5 to 10 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: N 2 ft at 5 seconds. .TUE NIGHT...SE winds around 5 kt, becoming S around 5 kt after midnight. Seas around 2 ft. Wave Detail: N 2 ft at 5 seconds. .WED...SW winds around 5 kt, increasing to 5 to 10 kt in the afternoon. Seas 1 foot or less. Wave Detail: N 1 foot at 5 seconds. .WED NIGHT AND THU...S winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SW 1 foot at 2 seconds and NE 1 foot at 5 seconds. .THU NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SW 1 foot at 2 seconds and E 1 foot at 7 seconds. A chance of showers. .FRI...N winds 5 to 10 kt. Seas around 2 ft. A chance of showers. .FRI NIGHT AND SAT...NE winds 5 to 10 kt with gusts up to 20 kt, becoming E. Seas around 2 ft. .SAT NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-150900- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 NM- 403 PM EDT Mon Sep 14 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 AM EDT TUESDAY... .TONIGHT...N winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. Wave Detail: N 4 ft at 5 seconds. .TUE...NE winds 10 to 15 kt, diminishing to 5 to 10 kt in the afternoon. Seas 2 to 4 ft. Wave Detail: NE 4 ft at 6 seconds and W 2 ft at 6 seconds. .TUE NIGHT...E winds around 5 kt, becoming S around 5 kt after midnight. Seas 2 to 3 ft. Wave Detail: NE 3 ft at 6 seconds and SW 1 foot at 6 seconds. .WED...SW winds around 5 kt, increasing to 5 to 10 kt in the afternoon. Seas around 2 ft. Wave Detail: N 2 ft at 5 seconds. .WED NIGHT AND THU...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 2 ft at 8 seconds and SW 1 foot at 3 seconds. .THU NIGHT...SW winds around 10 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 3 seconds and E 2 ft at 8 seconds. A chance of showers after midnight. .FRI...NW winds 10 to 15 kt. Seas 2 to 3 ft. A chance of showers. .FRI NIGHT AND SAT...NE winds 5 to 10 kt with gusts up to 20 kt, becoming E. Seas 2 to 3 ft. .SAT NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of showers. 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. $$ ANZ255-150900- Coastal Waters extending out to 25 NM South of Marthas Vineyard and Nantucket- 403 PM EDT Mon Sep 14 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 AM EDT TUESDAY... .TONIGHT...N winds 10 to 15 kt, becoming NE 15 to 20 kt after midnight. Seas 3 to 4 ft. Wave Detail: NE 3 ft at 7 seconds and W 2 ft at 5 seconds. .TUE...NE winds 10 to 15 kt. Seas 2 to 4 ft. Wave Detail: NE 3 ft at 5 seconds and SW 1 foot at 6 seconds. .TUE NIGHT...E winds 5 to 10 kt, becoming SE after midnight. Seas 2 to 3 ft. Wave Detail: E 2 ft at 6 seconds and NW 1 foot at 5 seconds. .WED...SW winds around 5 kt, increasing to 5 to 10 kt in the afternoon. Seas around 2 ft. Wave Detail: E 2 ft at 7 seconds and NW 1 foot at 5 seconds. .WED NIGHT THROUGH THU NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 4 seconds and E 2 ft at 7 seconds. .FRI THROUGH SAT...E winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: W 3 ft at 4 seconds and E 2 ft at 8 seconds. .SAT NIGHT...S winds 15 to 20 kt. Seas 2 to 3 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-150900- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 NM South of Block Island- 403 PM EDT Mon Sep 14 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 AM EDT TUESDAY... .TONIGHT...N winds 15 to 20 kt. Seas 3 to 4 ft. Wave Detail: NW 3 ft at 4 seconds and E 3 ft at 9 seconds. .TUE...NE winds 10 to 15 kt, diminishing to 5 to 10 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: NE 3 ft at 5 seconds and SW 1 foot at 6 seconds. .TUE NIGHT...E winds 5 to 10 kt, becoming S after midnight. Seas around 2 ft. Wave Detail: E 2 ft at 6 seconds and NW 1 foot at 4 seconds. .WED...SW winds around 5 kt, increasing to 5 to 10 kt in the afternoon. Seas around 2 ft. Wave Detail: E 2 ft at 7 seconds and SW 1 foot at 6 seconds. .WED NIGHT THROUGH THU NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 4 seconds and E 2 ft at 7 seconds. .FRI THROUGH SAT...E winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: W 3 ft at 5 seconds and E 3 ft at 6 seconds. .SAT NIGHT...S winds 15 to 20 kt. Seas 2 to 3 ft. A chance of showers. 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. $$ ANZ232-150900- Nantucket Sound- 403 PM EDT Mon Sep 14 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 AM EDT TUESDAY... .TONIGHT...N winds 15 to 20 kt. Seas 2 to 3 ft. Wave Detail: NW 2 ft at 3 seconds and E 2 ft at 7 seconds. .TUE...NE winds 10 to 15 kt, diminishing to 5 to 10 kt in the afternoon. Seas around 2 ft. Wave Detail: NE 2 ft at 4 seconds and SW 1 foot at 6 seconds. .TUE NIGHT...E winds 5 to 10 kt, becoming S after midnight. Seas around 2 ft. Wave Detail: E 1 foot at 5 seconds and NW 1 foot at 6 seconds. .WED...SW winds around 5 kt, increasing to 5 to 10 kt in the afternoon. Seas 1 foot or less, then around 2 ft in the afternoon. Wave Detail: N 1 foot at 5 seconds and E 1 foot at 5 seconds, becoming SW 1 foot at 2 seconds and E 1 foot at 5 seconds. .WED NIGHT AND THU...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SW 1 foot at 3 seconds and E 1 foot at 5 seconds. .THU NIGHT...SW winds 10 to 15 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 3 seconds and E 1 foot at 7 seconds. A chance of showers after midnight. .FRI...N winds 10 to 15 kt. Seas around 2 ft. A chance of showers. .FRI NIGHT AND SAT...NE winds 10 to 15 kt, becoming E. Seas around 2 ft. .SAT NIGHT...S winds 15 to 20 kt. Seas 2 to 3 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-150900- Vineyard Sound- 403 PM EDT Mon Sep 14 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 AM EDT TUESDAY... .TONIGHT...N winds 10 to 15 kt. Gusts up to 20 kt this evening. Seas around 2 ft. Wave Detail: N 2 ft at 4 seconds and E 1 foot at 6 seconds. .TUE...NE winds 10 to 15 kt, diminishing to 5 to 10 kt in the afternoon. Seas around 2 ft. Wave Detail: NE 1 foot at 4 seconds and SW 1 foot at 6 seconds. .TUE NIGHT...E winds 5 to 10 kt, becoming S after midnight. Seas 1 foot or less. Wave Detail: E 1 foot at 5 seconds and S 1 foot at 6 seconds. .WED...SW winds around 5 kt, increasing to 5 to 10 kt in the afternoon. Seas 1 foot or less. Wave Detail: NW 1 foot at 2 seconds and SE 1 foot at 8 seconds. .WED NIGHT AND THU...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SW 1 foot at 3 seconds and SE 1 foot at 7 seconds. .THU NIGHT...SW winds 10 to 15 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 3 seconds and SE 1 foot at 7 seconds. A chance of showers after midnight. .FRI...N winds 10 to 15 kt. Seas around 2 ft. A chance of showers. .FRI NIGHT AND SAT...NE winds 5 to 10 kt, becoming E. Seas around 2 ft. .SAT NIGHT...S winds 15 to 20 kt. Seas 2 to 3 ft. A chance of showers. 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. $$ ANZ234-150900- Buzzards Bay- 403 PM EDT Mon Sep 14 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 AM EDT TUESDAY... .TONIGHT...N winds 10 to 15 kt. Seas around 2 ft. Wave Detail: N 1 foot at 4 seconds. .TUE...NE winds 5 to 10 kt. Seas around 2 ft in the morning, then 1 foot or less. Wave Detail: NE 1 foot at 2 seconds and W 1 foot at 6 seconds, becoming NE 1 foot at 2 seconds and SW 1 foot at 6 seconds. .TUE NIGHT...SE winds 5 to 10 kt, becoming S after midnight. Seas 1 foot or less. Wave Detail: E 1 foot at 2 seconds and S 1 foot at 6 seconds. .WED...SW winds around 5 kt, increasing to 5 to 10 kt in the afternoon. Seas 1 foot or less, then around 2 ft in the afternoon. Wave Detail: SE 1 foot at 8 seconds, becoming SW 1 foot at 3 seconds and SE 1 foot at 10 seconds. .WED NIGHT AND THU...SW winds 10 to 15 kt. Seas around 2 ft. Wave Detail: SW 1 foot at 3 seconds and SE 1 foot at 9 seconds. .THU NIGHT...SW winds 10 to 15 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 4 seconds and SE 1 foot at 7 seconds. A chance of showers after midnight. .FRI...N winds around 10 kt. Seas around 2 ft. A chance of showers. .FRI NIGHT AND SAT...NE winds 5 to 10 kt, becoming E. Seas 1 foot or less. .SAT NIGHT...S winds 15 to 20 kt. Seas 2 to 3 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-150900- Rhode Island Sound- 403 PM EDT Mon Sep 14 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 AM EDT TUESDAY... .TONIGHT...N winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: N 3 ft at 5 seconds. .TUE...NE winds 10 to 15 kt, becoming E 5 to 10 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: NE 3 ft at 5 seconds and SW 1 foot at 6 seconds. .TUE NIGHT...SE winds 5 to 10 kt, becoming S after midnight. Seas around 2 ft in the evening, then 1 foot or less. Wave Detail: SE 2 ft at 6 seconds, becoming S 1 foot at 3 seconds and SE 1 foot at 8 seconds. .WED...SW winds 5 to 10 kt. Seas 1 foot or less, then around 2 ft in the afternoon. Wave Detail: S 1 foot at 3 seconds and SE 1 foot at 9 seconds, becoming SW 1 foot at 3 seconds and SE 1 foot at 8 seconds. .WED NIGHT AND THU...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 3 seconds and SE 2 ft at 8 seconds. .THU NIGHT...SW winds 10 to 15 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 3 seconds and SE 2 ft at 8 seconds. A chance of showers after midnight. .FRI THROUGH SAT...E winds 10 to 15 kt. Seas 2 to 3 ft. .SAT NIGHT...S winds 15 to 20 kt. Seas 2 to 3 ft. A chance of showers. 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. $$ ANZ237-150900- Block Island Sound- 403 PM EDT Mon Sep 14 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 AM EDT TUESDAY... .TONIGHT...N winds 10 to 15 kt. Gusts up to 20 kt after midnight. Seas 2 to 3 ft. Wave Detail: NW 2 ft at 4 seconds and E 2 ft at 8 seconds. .TUE...NE winds around 10 kt, becoming E in the afternoon. Seas 2 to 3 ft. Wave Detail: NE 2 ft at 5 seconds and SW 1 foot at 6 seconds. .TUE NIGHT...S winds around 5 kt. Seas around 2 ft. Wave Detail: E 2 ft at 6 seconds and S 1 foot at 6 seconds. .WED...SW winds 5 to 10 kt. Seas 1 foot or less, then around 2 ft in the afternoon. Wave Detail: SE 1 foot at 8 seconds, becoming SW 1 foot at 2 seconds and SE 1 foot at 8 seconds. .WED NIGHT THROUGH THU NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 3 seconds and SE 2 ft at 8 seconds. .FRI THROUGH SAT...E winds 10 to 15 kt. Seas around 2 ft. Wave Detail: W 2 ft at 4 seconds and SE 2 ft at 8 seconds. .SAT NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-150900- Boston Harbor- 403 PM EDT Mon Sep 14 2026 .TONIGHT...N winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt after midnight. Waves around 2 ft this evening, then 1 foot or less. .TUE...NE winds 5 to 10 kt, becoming E in the afternoon. Waves 1 foot or less. .TUE NIGHT...SE winds 5 to 10 kt, becoming SW after midnight. Waves 1 foot or less. .WED...SW winds 5 to 10 kt. Waves 1 foot or less. .WED NIGHT...SW winds 5 to 10 kt. Waves 1 foot or less. .THU...NW winds around 5 kt, becoming SE in the afternoon. Waves 1 foot or less. .THU NIGHT...S winds 5 to 10 kt, becoming W after midnight. Waves 1 foot or less. A chance of showers. .FRI...N winds 5 to 10 kt. Waves 1 foot or less. A chance of showers. .FRI NIGHT AND SAT...N winds 5 to 10 kt, becoming E. Waves 1 foot or less. .SAT NIGHT...S winds 10 to 15 kt. Waves around 2 ft. A chance of showers. 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. $$ ANZ236-150900- Narragansett Bay- 403 PM EDT Mon Sep 14 2026 .TONIGHT...N winds 5 to 10 kt. Waves around 2 ft. .TUE...NE winds 5 to 10 kt, becoming E in the afternoon. Waves around 2 ft. .TUE NIGHT...S winds around 5 kt. Waves 1 foot or less. .WED...SW winds 5 to 10 kt. Waves 1 foot or less, then around 2 ft in the afternoon. .WED NIGHT AND THU...SW winds 5 to 10 kt. Waves around 2 ft. .THU NIGHT...SW winds 5 to 10 kt. Waves around 2 ft. A chance of showers after midnight. .FRI THROUGH SAT...E winds 5 to 10 kt. Waves around 2 ft. .SAT NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ280-150900- Ocean Waters from the Merrimack River to Plymouth from 40 to 60 NM- 403 PM EDT Mon Sep 14 2026 .TONIGHT...N winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 5 ft. Wave Detail: NW 4 ft at 5 seconds and E 4 ft at 7 seconds. .TUE...NE winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt in the afternoon. Seas 3 to 5 ft. Wave Detail: N 4 ft at 6 seconds. .TUE NIGHT...SE winds around 5 kt, becoming S after midnight. Seas 2 to 3 ft. Wave Detail: NE 2 ft at 6 seconds and W 1 foot at 5 seconds. .WED...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 3 seconds and E 2 ft at 9 seconds. .WED NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 3 seconds and E 2 ft at 8 seconds. .THU...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 2 ft at 8 seconds and SW 1 foot at 3 seconds. .THU NIGHT...S winds around 10 kt, becoming SW with gusts up to 20 kt after midnight. Seas 2 to 3 ft. A chance of showers. .FRI...N winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of showers. .FRI NIGHT AND SAT...N winds 10 to 15 kt, becoming E. Gusts up to 20 kt. Seas 2 to 3 ft. .SAT NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of showers. 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. $$ ANZ281-150900- Ocean Waters from Provincetown to Nantucket from 20 to 60 NM- 403 PM EDT Mon Sep 14 2026 .TONIGHT...N winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 5 ft. Wave Detail: N 4 ft at 6 seconds. .TUE...NE winds 10 to 15 kt. Gusts up to 20 kt in the morning. Seas 3 to 5 ft. Wave Detail: N 4 ft at 6 seconds and S 1 foot at 6 seconds. .TUE NIGHT...E winds 5 to 10 kt, becoming SE after midnight. Seas 2 to 4 ft. Wave Detail: NE 3 ft at 6 seconds and SW 1 foot at 6 seconds. .WED...SW winds around 5 kt, increasing to 5 to 10 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: E 2 ft at 6 seconds and NW 1 foot at 5 seconds. .WED NIGHT AND THU...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 2 ft at 8 seconds and SW 1 foot at 3 seconds. .THU NIGHT...SW winds 5 to 10 kt, increasing to 10 to 15 kt after midnight. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 3 seconds and E 2 ft at 8 seconds. A chance of showers after midnight. .FRI...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of showers. .FRI NIGHT THROUGH SAT NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ282-150900- Ocean Waters from Marthas Vineyard to Nantucket from 25 to 60 NM- 403 PM EDT Mon Sep 14 2026 .TONIGHT...N winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 5 ft. Wave Detail: N 4 ft at 6 seconds and W 3 ft at 5 seconds. .TUE...NE winds 10 to 15 kt. Gusts up to 20 kt in the morning. Seas 3 to 4 ft. Wave Detail: NE 3 ft at 6 seconds and SW 2 ft at 6 seconds. .TUE NIGHT...NE winds 5 to 10 kt, becoming E after midnight. Seas 3 to 4 ft. Wave Detail: N 3 ft at 5 seconds. .WED...NE winds around 5 kt, becoming SW in the afternoon. Seas 2 to 3 ft. Wave Detail: N 3 ft at 6 seconds. .WED NIGHT THROUGH THU NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: W 2 ft at 3 seconds and E 2 ft at 7 seconds. .FRI THROUGH SAT NIGHT...S winds 10 to 15 kt. Seas 2 to 4 ft. Wave Detail: S 4 ft at 6 seconds and E 2 ft at 8 seconds. 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. $$ ANZ283-150900- Ocean Waters from Montauk NY to Marthas Vineyard from 25 to 60 NM- 403 PM EDT Mon Sep 14 2026 .TONIGHT...N winds 15 to 20 kt. Seas 3 to 4 ft. Wave Detail: NE 4 ft at 9 seconds and NW 3 ft at 5 seconds. .TUE...NE winds 10 to 15 kt. Gusts up to 20 kt in the morning. Seas 2 to 4 ft. Wave Detail: NE 4 ft at 6 seconds and SW 1 foot at 6 seconds. .TUE NIGHT...E winds 5 to 10 kt, diminishing to around 5 kt after midnight. Seas 2 to 3 ft. Wave Detail: E 3 ft at 6 seconds and NW 1 foot at 4 seconds. .WED...NE winds around 5 kt, becoming SW in the afternoon. Seas 2 to 3 ft. Wave Detail: E 2 ft at 7 seconds. .WED NIGHT THROUGH THU NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 4 seconds and E 2 ft at 7 seconds. .FRI THROUGH SAT...E winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: W 3 ft at 5 seconds and NE 3 ft at 6 seconds. .SAT NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ 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