Coastal Waters Forecast
Issued by NWS Boston, MA
Issued by NWS Boston, MA
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999 FZUS51 KBOX 300204 CWFBOX Coastal Waters Forecast for Massachusetts and Rhode Island National Weather Service Boston/Norton MA 1003 PM EDT Sat Aug 29 2026 Coastal waters from the Merrimack River MA to Watch Hill RI out to 60 NM ANZ200-301500- 1003 PM EDT Sat Aug 29 2026 .Synopsis for Massachusetts and Rhode Island coastal waters... High pres moves past the waters towards Sun. A backdoor cold front may approach the ern MA waters Mon morning, then should linger across some of the waters into mid week. $$ ANZ250-301500- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 1003 PM EDT Sat Aug 29 2026 .OVERNIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SE 2 ft at 7 seconds and SW 1 foot at 2 seconds. .SUN...SW winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 3 seconds and E 2 ft at 7 seconds. .SUN NIGHT...SW winds 10 to 15 kt, becoming W 5 to 10 kt after midnight. Gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft at 5 seconds and SE 2 ft at 8 seconds. .MON...N winds 5 to 10 kt, becoming E in the afternoon. Seas around 2 ft. Wave Detail: NW 2 ft at 3 seconds and E 1 foot at 5 seconds. .MON NIGHT...S winds 5 to 10 kt. Seas around 2 ft in the evening, then 1 foot or less. Wave Detail: N 1 foot at 4 seconds and SE 1 foot at 8 seconds, becoming NE 1 foot at 4 seconds and SE 1 foot at 8 seconds. .TUE...SE winds 5 to 10 kt. Seas 1 foot or less, then around 2 ft in the afternoon. Wave Detail: S 1 foot at 2 seconds and NE 1 foot at 4 seconds, becoming SE 1 foot at 3 seconds and SE 1 foot at 8 seconds. A chance of showers. A chance of tstms in the afternoon. .TUE NIGHT...SE winds around 10 kt. Seas around 2 ft. A chance of showers. .WED...E winds around 10 kt. Seas 2 to 3 ft. A chance of showers. .WED NIGHT...SE winds around 10 kt. Seas 2 to 3 ft. A chance of showers. .THU AND THU NIGHT...SE winds 5 to 10 kt, becoming E. Seas 2 to 4 ft. A chance of showers. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-301500- Massachusetts Bay and Ipswich Bay- 1003 PM EDT Sat Aug 29 2026 .OVERNIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E 2 ft at 7 seconds and S 1 foot at 3 seconds. .SUN...SW winds around 10 kt. Seas around 2 ft. Wave Detail: E 2 ft at 7 seconds and SW 1 foot at 2 seconds. .SUN NIGHT...SW winds around 10 kt, becoming W after midnight. Seas around 2 ft. Wave Detail: SW 2 ft at 3 seconds and SE 1 foot at 4 seconds. .MON...N winds 5 to 10 kt, becoming E in the afternoon. Seas around 2 ft in the morning, then 1 foot or less. Wave Detail: NW 1 foot at 3 seconds and E 1 foot at 4 seconds, becoming N 1 foot at 3 seconds and E 1 foot at 8 seconds. .MON NIGHT...S winds 5 to 10 kt. Seas 1 foot or less. Wave Detail: E 1 foot at 3 seconds and W 1 foot at 3 seconds. .TUE AND TUE NIGHT...E winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E 1 foot at 3 seconds and SE 1 foot at 8 seconds. A chance of showers in the morning, then showers likely with a chance of tstms through the night. A chance of showers after midnight. .WED...E winds 5 to 10 kt. Seas around 2 ft. A chance of showers. .WED NIGHT...SE winds 5 to 10 kt. Seas around 2 ft. A chance of showers. .THU AND THU NIGHT...SE winds 5 to 10 kt, becoming E. Seas 2 to 3 ft. A chance of showers. Winds and seas higher in and near tstms. 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. $$ ANZ231-301500- Cape Cod Bay- 1003 PM EDT Sat Aug 29 2026 .OVERNIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: N 1 foot at 4 seconds and SE 1 foot at 10 seconds. .SUN...SW winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: W 1 foot at 2 seconds and NE 1 foot at 4 seconds. .SUN NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt, becoming W 5 to 10 kt after midnight. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 3 seconds and SE 2 ft at 9 seconds. A chance of showers. .MON...N winds 5 to 10 kt, becoming NE in the afternoon. Seas 1 foot or less. Wave Detail: NW 1 foot at 3 seconds and E 1 foot at 6 seconds. .MON NIGHT...SE winds around 5 kt. Seas 1 foot or less. Wave Detail: N 1 foot at 3 seconds and SE 1 foot at 8 seconds. .TUE AND TUE NIGHT...E winds 5 to 10 kt. Seas around 2 ft. Wave Detail: NE 1 foot at 3 seconds and SW 1 foot at 3 seconds. A chance of showers. .WED THROUGH THU NIGHT...S winds 5 to 10 kt. Seas around 2 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-301500- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 NM- 1003 PM EDT Sat Aug 29 2026 .OVERNIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: NE 2 ft at 6 seconds and S 2 ft at 6 seconds. .SUN...SW winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: W 2 ft at 4 seconds and E 2 ft at 5 seconds. .SUN NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 4 seconds and SE 2 ft at 8 seconds. A chance of showers. .MON...N winds 5 to 10 kt, becoming NE in the afternoon. Seas 2 to 3 ft. Wave Detail: NW 2 ft at 4 seconds and E 1 foot at 5 seconds. .MON NIGHT...SE winds around 5 kt. Seas around 2 ft. Wave Detail: SW 1 foot at 4 seconds and N 1 foot at 4 seconds. .TUE AND TUE NIGHT...E winds 5 to 10 kt. Seas around 2 ft. Wave Detail: S 2 ft at 4 seconds and SE 2 ft at 12 seconds. A chance of showers. .WED AND WED NIGHT...E winds around 10 kt. Seas 2 to 3 ft. A chance of showers. .THU AND THU NIGHT...S winds around 10 kt. Seas 3 to 5 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. $$ ANZ255-301500- Coastal Waters extending out to 25 NM South of Marthas Vineyard and Nantucket- 1003 PM EDT Sat Aug 29 2026 .OVERNIGHT...SW winds around 5 kt, becoming W. Seas 2 to 3 ft. Wave Detail: NE 2 ft at 6 seconds and S 2 ft at 7 seconds. .SUN...W winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: W 3 ft at 4 seconds and E 2 ft at 7 seconds. .SUN NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas around 3 ft. Wave Detail: SW 3 ft at 5 seconds and E 1 foot at 7 seconds. A chance of showers. .MON...NW winds 5 to 10 kt, becoming NE in the afternoon. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 5 seconds and NE 1 foot at 5 seconds. .MON NIGHT...SE winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 5 seconds and NE 1 foot at 3 seconds. .TUE...SE winds 5 to 10 kt. Seas around 2 ft. Wave Detail: NE 1 foot at 3 seconds and SW 1 foot at 4 seconds. A chance of showers in the afternoon. .TUE NIGHT...SE winds around 10 kt. Seas around 2 ft. A chance of showers. .WED AND WED NIGHT...E winds 10 to 15 kt. Seas 2 to 4 ft. A chance of showers. .THU...S winds 10 to 15 kt. Seas 4 to 6 ft. A chance of showers. .THU NIGHT...SW winds 10 to 15 kt. Seas 3 to 5 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-301500- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 NM South of Block Island- 1003 PM EDT Sat Aug 29 2026 .OVERNIGHT...W winds 5 to 10 kt. Seas around 2 ft. Wave Detail: S 2 ft at 7 seconds and NE 1 foot at 4 seconds. .SUN...SW winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 4 seconds and SE 2 ft at 7 seconds. .SUN NIGHT...SW winds 15 to 20 kt, becoming W 10 to 15 kt after midnight. Seas 3 to 4 ft. Wave Detail: SW 3 ft at 5 seconds and E 1 foot at 7 seconds. A chance of showers. .MON...NW winds 5 to 10 kt, becoming E in the afternoon. Seas 2 to 3 ft. Wave Detail: W 3 ft at 5 seconds and SE 1 foot at 8 seconds. .MON NIGHT...SE winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E 1 foot at 3 seconds and SW 1 foot at 4 seconds. .TUE AND TUE NIGHT...E winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft at 4 seconds and SE 2 ft at 12 seconds. A chance of showers. .WED AND WED NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft. A chance of showers. .THU...SW winds 10 to 15 kt. Seas 4 to 6 ft. A chance of showers. .THU NIGHT...W winds 10 to 15 kt. Seas 3 to 5 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. $$ ANZ232-301500- Nantucket Sound- 1003 PM EDT Sat Aug 29 2026 .OVERNIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: S 1 foot at 6 seconds and E 1 foot at 6 seconds. .SUN...W winds 10 to 15 kt, becoming SW 15 to 20 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: W 2 ft at 3 seconds and E 1 foot at 7 seconds. .SUN NIGHT...SW winds 15 to 20 kt, becoming W 10 to 15 kt after midnight. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 4 seconds and E 1 foot at 7 seconds. A chance of showers. .MON...N winds around 10 kt, becoming NE in the afternoon. Seas around 2 ft. Wave Detail: NW 2 ft at 4 seconds and E 1 foot at 5 seconds. .MON NIGHT...SE winds 5 to 10 kt. Seas 1 foot or less. Wave Detail: NE 1 foot at 2 seconds and SW 1 foot at 5 seconds. .TUE...SE winds 5 to 10 kt, increasing to 10 to 15 kt in the afternoon. Seas 1 foot or less, then around 2 ft in the afternoon. Wave Detail: E 1 foot at 2 seconds and SW 1 foot at 4 seconds, becoming S 1 foot at 4 seconds and SE 1 foot at 8 seconds. A chance of showers. .TUE NIGHT...SE winds 10 to 15 kt. Seas around 2 ft. A chance of showers. .WED THROUGH THU NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-301500- Vineyard Sound- 1003 PM EDT Sat Aug 29 2026 .OVERNIGHT...SW winds around 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 7 seconds and SW 1 foot at 4 seconds. .SUN...SW winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 4 seconds and E 1 foot at 7 seconds. .SUN NIGHT...W winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 5 seconds and E 1 foot at 8 seconds. A chance of showers. .MON...N winds 5 to 10 kt, becoming E in the afternoon. Seas around 2 ft. Wave Detail: SW 2 ft at 5 seconds and E 1 foot at 5 seconds. .MON NIGHT...SE winds 5 to 10 kt. Seas 1 foot or less. Wave Detail: E 1 foot at 2 seconds and SW 1 foot at 5 seconds. .TUE AND TUE NIGHT...E winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E 1 foot at 2 seconds and SW 1 foot at 4 seconds. A chance of showers. .WED...E winds 10 to 15 kt. Seas around 2 ft. A chance of showers. .WED NIGHT...SE winds around 10 kt. Seas 2 to 3 ft. A chance of showers. .THU AND THU NIGHT...S winds 10 to 15 kt, becoming W. 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. $$ ANZ234-301500- Buzzards Bay- 1003 PM EDT Sat Aug 29 2026 .OVERNIGHT...SW winds 5 to 10 kt. Seas 1 foot or less. Wave Detail: NE 1 foot at 3 seconds and SW 1 foot at 3 seconds. .SUN...SW winds 10 to 15 kt, increasing to 15 to 20 kt with gusts up to 25 kt in the afternoon. Seas 2 to 4 ft. Wave Detail: SW 3 ft at 4 seconds and E 1 foot at 7 seconds. .SUN NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt, becoming W 10 to 15 kt after midnight. Seas 2 to 4 ft. Wave Detail: SW 3 ft at 4 seconds and E 1 foot at 7 seconds. A chance of showers. .MON...N winds 5 to 10 kt, becoming E in the afternoon. Seas around 2 ft in the morning, then 1 foot or less. Wave Detail: W 2 ft at 5 seconds and SE 1 foot at 7 seconds, becoming NE 1 foot at 2 seconds and SW 1 foot at 5 seconds. .MON NIGHT...SE winds 5 to 10 kt. Seas 1 foot or less. Wave Detail: E 1 foot at 2 seconds and SW 1 foot at 5 seconds. .TUE AND TUE NIGHT...E winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E 1 foot at 2 seconds and SW 1 foot at 4 seconds. A chance of showers. .WED...E winds around 10 kt. Seas around 2 ft. A chance of showers. .WED NIGHT AND THU...SE winds around 10 kt, becoming S. Seas 2 to 3 ft. A chance of showers. .THU NIGHT...W winds around 10 kt. Seas 2 to 3 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-301500- Rhode Island Sound- 1003 PM EDT Sat Aug 29 2026 .OVERNIGHT...W winds around 10 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 5 seconds and SE 2 ft at 8 seconds. .SUN...W winds 10 to 15 kt, becoming SW 15 to 20 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 4 seconds and E 2 ft at 7 seconds. .SUN NIGHT...SW winds 15 to 20 kt, becoming W 10 to 15 kt after midnight. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 5 seconds and E 2 ft at 7 seconds. A chance of showers. .MON...N winds 5 to 10 kt, becoming E in the afternoon. Seas around 2 ft. Wave Detail: SW 2 ft at 5 seconds and SE 1 foot at 5 seconds. .MON NIGHT...SE winds 5 to 10 kt. Seas around 2 ft. Wave Detail: S 1 foot at 4 seconds and SE 1 foot at 8 seconds. A chance of showers after midnight. .TUE AND TUE NIGHT...E winds 10 to 15 kt. Seas around 2 ft. Wave Detail: S 2 ft at 4 seconds and SE 1 foot at 8 seconds. A chance of showers. .WED...E winds 10 to 15 kt. Seas 2 to 3 ft. A chance of showers. .WED NIGHT...SE winds 10 to 15 kt. Seas 2 to 4 ft. A chance of showers. .THU...S winds 10 to 15 kt. Seas 3 to 5 ft. A chance of showers. .THU NIGHT...W winds 10 to 15 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. $$ ANZ237-301500- Block Island Sound- 1003 PM EDT Sat Aug 29 2026 .OVERNIGHT...W winds around 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 7 seconds and NE 1 foot at 3 seconds. .SUN...SW winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 4 seconds and SE 2 ft at 8 seconds. .SUN NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt, becoming W 5 to 10 kt after midnight. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 4 seconds and SE 2 ft at 7 seconds. A chance of showers. .MON...N winds around 5 kt, becoming SE in the afternoon. Seas around 2 ft. Wave Detail: W 2 ft at 5 seconds and NE 1 foot at 5 seconds. .MON NIGHT...SE winds around 5 kt. Seas around 2 ft. Wave Detail: SE 1 foot at 3 seconds and SE 1 foot at 8 seconds. A chance of showers after midnight. .TUE...S winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E 1 foot at 3 seconds and SW 1 foot at 4 seconds. A chance of showers. .TUE NIGHT...SE winds 5 to 10 kt, becoming E after midnight. Seas around 2 ft. Showers likely in the evening. A chance of showers after midnight. .WED...E winds around 10 kt. Seas 2 to 3 ft. A chance of showers. .WED NIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers. .THU...SW winds 5 to 10 kt. Seas 3 to 5 ft. A chance of showers. .THU NIGHT...W winds 5 to 10 kt. Seas 2 to 4 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-301500- Boston Harbor- 1003 PM EDT Sat Aug 29 2026 .OVERNIGHT...SW winds 5 to 10 kt. Waves 1 foot or less. .SUN...SW winds 5 to 10 kt. Waves around 2 ft. .SUN NIGHT...W winds 5 to 10 kt. Waves around 2 ft in the evening, then 1 foot or less. .MON...NE winds 5 to 10 kt, becoming E in the afternoon. Waves 1 foot or less. .MON NIGHT...S winds 5 to 10 kt. Waves 1 foot or less. A chance of showers after midnight. .TUE AND TUE NIGHT...E winds 5 to 10 kt. Waves around 2 ft. A chance of showers in the morning, then showers likely with a chance of tstms through the night. A chance of showers after midnight. .WED...E winds 5 to 10 kt. Waves 1 foot or less. A chance of showers. .WED NIGHT...SE winds 5 to 10 kt. Waves 1 foot or less. A chance of showers. .THU AND THU NIGHT...SE winds 5 to 10 kt, becoming E. Waves around 2 ft, then 1 foot or less. A chance of showers. Winds and waves higher in and near tstms. 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. $$ ANZ236-301500- Narragansett Bay- 1003 PM EDT Sat Aug 29 2026 .OVERNIGHT...W winds 5 to 10 kt. Waves around 2 ft. .SUN...SW winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt in the afternoon. Waves 2 to 3 ft. .SUN NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt, becoming W 5 to 10 kt after midnight. Waves 2 to 3 ft. A chance of showers. .MON...N winds around 5 kt, becoming SE in the afternoon. Waves around 2 ft in the morning, then 1 foot or less. .MON NIGHT...S winds 5 to 10 kt. Waves 1 foot or less. A chance of showers after midnight. .TUE AND TUE NIGHT...E winds 5 to 10 kt. Waves around 2 ft. A chance of showers. .WED...E winds 5 to 10 kt. Waves around 2 ft. A chance of showers. .WED NIGHT AND THU...SE winds 5 to 10 kt, becoming S. Waves 2 to 3 ft. A chance of showers. .THU NIGHT...W winds 5 to 10 kt. Waves 2 to 3 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ280-301500- Ocean Waters from the Merrimack River to Plymouth from 40 to 60 NM- 1003 PM EDT Sat Aug 29 2026 .OVERNIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 3 ft. Wave Detail: S 3 ft at 7 seconds and SW 2 ft at 3 seconds. .SUN...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 4 seconds and SE 2 ft at 7 seconds. .SUN NIGHT...SW winds 15 to 20 kt, becoming NW 10 to 15 kt after midnight. Gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: S 3 ft at 5 seconds and SE 1 foot at 9 seconds. .MON...N winds around 10 kt, becoming NE in the afternoon. Seas 2 to 3 ft. Wave Detail: NW 3 ft at 4 seconds and NE 1 foot at 5 seconds. .MON NIGHT...S winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SW 1 foot at 4 seconds and NE 1 foot at 4 seconds. .TUE...SE winds 5 to 10 kt. Seas 1 foot or less, then around 2 ft in the afternoon. Wave Detail: SW 1 foot at 3 seconds and NE 1 foot at 4 seconds, becoming E 1 foot at 3 seconds and SE 1 foot at 9 seconds. A chance of showers and tstms in the afternoon. .TUE NIGHT...SE winds 10 to 15 kt. Gusts up to 20 kt after midnight. Seas around 2 ft. A chance of showers. .WED...E winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of showers. .WED NIGHT...SE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. Showers likely. .THU AND THU NIGHT...SE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. A chance of showers. Winds and seas higher in and near tstms. 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. $$ ANZ281-301500- Ocean Waters from Provincetown to Nantucket from 20 to 60 NM- 1003 PM EDT Sat Aug 29 2026 .OVERNIGHT...SW winds 5 to 10 kt. Seas around 3 ft. Wave Detail: NE 2 ft at 5 seconds and S 2 ft at 7 seconds. .SUN...SW winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 4 seconds and SE 2 ft at 8 seconds. .SUN NIGHT...SW winds 15 to 20 kt, becoming W 10 to 15 kt after midnight. Gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: SW 3 ft at 4 seconds and SE 2 ft at 8 seconds. A chance of showers. .MON...NW winds 5 to 10 kt, becoming NE in the afternoon. Seas 2 to 3 ft. Wave Detail: NW 3 ft at 5 seconds and SE 1 foot at 8 seconds. .MON NIGHT...SE winds around 5 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 5 seconds and NE 1 foot at 4 seconds. .TUE...SE winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SW 1 foot at 4 seconds and NE 1 foot at 4 seconds. A chance of showers in the afternoon. .TUE NIGHT...SE winds 10 to 15 kt. Gusts up to 20 kt after midnight. Seas 2 to 3 ft. A chance of showers and tstms. .WED AND WED NIGHT...E winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. A chance of showers. .THU AND THU NIGHT...S winds around 10 kt. Gusts up to 20 kt. Seas 4 to 6 ft. A chance of showers. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ282-301500- Ocean Waters from Marthas Vineyard to Nantucket from 25 to 60 NM- 1003 PM EDT Sat Aug 29 2026 .OVERNIGHT...NE winds around 5 kt, becoming W. Seas 2 to 3 ft. Wave Detail: NE 2 ft at 6 seconds and S 2 ft at 7 seconds. .SUN...W winds 5 to 10 kt, becoming SW 10 to 15 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 5 seconds and NE 2 ft at 5 seconds. .SUN NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Wave Detail: SW 4 ft at 5 seconds and SE 2 ft at 8 seconds. A chance of showers after midnight. .MON...NW winds 5 to 10 kt, becoming NE in the afternoon. Seas 2 to 4 ft. Wave Detail: W 3 ft at 5 seconds and N 1 foot at 3 seconds. A chance of showers in the morning. .MON NIGHT...E winds around 5 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 4 seconds and N 1 foot at 3 seconds. .TUE...SE winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E 2 ft at 4 seconds and SW 1 foot at 4 seconds. A chance of showers in the afternoon. .TUE NIGHT...SE winds around 10 kt. Seas 2 to 3 ft. A chance of showers and tstms. .WED...E winds around 10 kt. Seas around 3 ft. A chance of showers. .WED NIGHT...SE winds around 10 kt. Seas 4 to 6 ft. A chance of showers. .THU...S winds around 10 kt. Seas 5 to 8 ft. A chance of showers. .THU NIGHT...SW winds around 10 kt. Seas 5 to 7 ft. A chance of showers. Winds and seas higher in and near tstms. 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. $$ ANZ283-301500- Ocean Waters from Montauk NY to Marthas Vineyard from 25 to 60 NM- 1003 PM EDT Sat Aug 29 2026 .OVERNIGHT...W winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft at 7 seconds and NE 1 foot at 6 seconds. .SUN...W winds 5 to 10 kt, becoming SW 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: W 2 ft at 4 seconds and E 2 ft at 7 seconds. .SUN NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. Wave Detail: SW 4 ft at 5 seconds and E 2 ft at 7 seconds. A chance of showers. .MON...NW winds 5 to 10 kt, becoming NE in the afternoon. Seas 2 to 3 ft. Wave Detail: W 3 ft at 5 seconds and N 1 foot at 3 seconds. A chance of showers in the morning. .MON NIGHT AND TUE...SE winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 3 seconds and SW 1 foot at 4 seconds. A chance of showers. .TUE NIGHT...S winds around 10 kt, becoming E after midnight. Seas 2 to 3 ft. Wave Detail: SE 2 ft at 4 seconds and SE 2 ft at 10 seconds. A chance of showers. A chance of tstms in the evening. .WED...E winds 10 to 15 kt. Seas 3 to 4 ft. A chance of showers. .WED NIGHT...SE winds 10 to 15 kt. Seas 4 to 6 ft. A chance of showers. .THU...SW winds 10 to 15 kt. Seas 5 to 8 ft. A chance of showers. .THU NIGHT...W winds 10 to 15 kt. Seas 4 to 6 ft. A chance of showers. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ 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