Coastal Waters Forecast
Issued by NWS Boston, MA
Issued by NWS Boston, MA
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936 FZUS51 KBOX 102003 CWFBOX Coastal Waters Forecast for Massachusetts and Rhode Island National Weather Service Boston/Norton MA 403 PM EDT Thu Sep 10 2026 Coastal waters from the Merrimack River MA to Watch Hill RI out to 60 NM ANZ200-110900- 403 PM EDT Thu Sep 10 2026 .Synopsis for Massachusetts and Rhode Island coastal waters... High pres then builds behind this front Fri 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 nosing in from the west by Mon. $$ ANZ250-110900- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 403 PM EDT Thu Sep 10 2026 .TONIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: W 2 ft at 4 seconds and SE 2 ft at 10 seconds. .FRI...NW winds 10 to 15 kt with gusts up to 20 kt, becoming W 5 to 10 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: NW 2 ft at 3 seconds and SE 2 ft at 10 seconds. .FRI NIGHT...W winds 5 to 10 kt, becoming N after midnight. Seas around 2 ft. Wave Detail: SE 2 ft at 9 seconds and NW 1 foot at 3 seconds. .SAT...E winds around 5 kt, becoming SE in the afternoon. Seas around 2 ft. Wave Detail: NW 1 foot at 3 seconds and SE 1 foot at 9 seconds. .SAT NIGHT...S winds around 10 kt. Seas around 2 ft. Wave Detail: S 2 ft at 3 seconds and SE 1 foot at 10 seconds. .SUN...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft at 4 seconds and SE 1 foot at 10 seconds. A chance of showers. .SUN NIGHT...SW winds around 10 kt, becoming W after midnight. Seas 2 to 3 ft. .MON THROUGH TUE NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-110900- Massachusetts Bay and Ipswich Bay- 403 PM EDT Thu Sep 10 2026 .TONIGHT...W winds 10 to 15 kt. Gusts up to 20 kt this evening. Seas 2 to 3 ft. Wave Detail: W 2 ft at 3 seconds and SE 1 foot at 10 seconds. .FRI...NW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: NW 1 foot at 3 seconds and E 1 foot at 10 seconds. .FRI NIGHT...NW winds around 5 kt. Seas 1 foot or less. Wave Detail: NW 1 foot at 2 seconds and E 1 foot at 7 seconds. .SAT...NE winds around 5 kt, becoming SE in the afternoon. Seas 1 foot or less, then around 2 ft in the afternoon. Wave Detail: NW 1 foot at 2 seconds and E 1 foot at 7 seconds, becoming SE 1 foot at 2 seconds and E 1 foot at 9 seconds. .SAT NIGHT...S winds around 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 3 seconds and E 1 foot at 10 seconds. .SUN...S winds around 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 3 seconds and E 1 foot at 10 seconds. A chance of showers. .SUN NIGHT...SW winds 5 to 10 kt, becoming W after midnight. Seas around 2 ft. .MON THROUGH TUE NIGHT...S 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. $$ ANZ231-110900- Cape Cod Bay- 403 PM EDT Thu Sep 10 2026 .TONIGHT...W winds around 10 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: W 1 foot at 3 seconds and SE 1 foot at 9 seconds. .FRI...NW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: NW 1 foot at 3 seconds and SE 1 foot at 9 seconds. .FRI NIGHT...SW winds around 5 kt, becoming N after midnight. Seas 1 foot or less. Wave Detail: NW 1 foot at 4 seconds and E 1 foot at 10 seconds. .SAT...E winds around 5 kt, becoming SE in the afternoon. Seas 1 foot or less, then around 2 ft in the afternoon. Wave Detail: N 1 foot at 4 seconds, becoming SE 1 foot at 3 seconds and NE 1 foot at 4 seconds. .SAT NIGHT...S winds 5 to 10 kt. Seas around 2 ft. Wave Detail: S 1 foot at 2 seconds and NE 1 foot at 4 seconds. .SUN...S winds around 10 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: S 1 foot at 2 seconds and E 1 foot at 6 seconds. Showers likely, mainly in the morning. .SUN NIGHT...SW winds 5 to 10 kt, becoming W after midnight. Seas around 2 ft. A chance of showers in the evening. .MON THROUGH TUE NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-110900- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 NM- 403 PM EDT Thu Sep 10 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 1 AM EDT FRIDAY... .TONIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. Wave Detail: W 4 ft at 6 seconds and SE 1 foot at 9 seconds. .FRI...NW winds 10 to 15 kt, diminishing to 5 to 10 kt in the afternoon. Seas 2 to 4 ft. Wave Detail: NW 3 ft at 5 seconds and SE 1 foot at 10 seconds. .FRI NIGHT...SW winds around 5 kt, becoming NW after midnight. Seas 2 to 3 ft. Wave Detail: S 2 ft at 7 seconds. .SAT...E winds around 5 kt, becoming SE in the afternoon. Seas around 2 ft. Wave Detail: S 2 ft at 6 seconds and E 2 ft at 8 seconds. .SAT NIGHT...S winds 5 to 10 kt. Seas around 2 ft. Wave Detail: S 2 ft at 5 seconds and SE 1 foot at 9 seconds. .SUN...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 SE 1 foot at 10 seconds. Showers likely. .SUN NIGHT...SW winds 10 to 15 kt, becoming W after midnight. Seas 2 to 3 ft. A chance of showers. .MON THROUGH TUE 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. $$ ANZ255-110900- Coastal Waters extending out to 25 NM South of Marthas Vineyard and Nantucket- 403 PM EDT Thu Sep 10 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 AM EDT FRIDAY... .TONIGHT...W winds 10 to 15 kt with gusts up to 20 kt, becoming NW after midnight. Seas 4 to 6 ft. Wave Detail: SW 6 ft at 7 seconds and SE 1 foot at 9 seconds. .FRI...NW winds 5 to 10 kt. Seas 2 to 4 ft. Wave Detail: SW 4 ft at 7 seconds and SE 1 foot at 10 seconds. .FRI NIGHT...SW winds 5 to 10 kt, becoming N after midnight. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 6 seconds and SE 1 foot at 10 seconds. .SAT...SE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 7 seconds and SE 1 foot at 10 seconds. .SAT NIGHT...S winds 5 to 10 kt, increasing to 10 to 15 kt after midnight. Seas around 2 ft. Wave Detail: S 2 ft at 6 seconds and SE 1 foot at 9 seconds. .SUN...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Wave Detail: S 3 ft at 5 seconds and SE 1 foot at 10 seconds. Showers likely. .SUN NIGHT...SW winds around 10 kt. Seas 3 to 4 ft. A chance of showers in the evening. .MON THROUGH TUE NIGHT...S winds 15 to 20 kt. Seas 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-110900- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 NM South of Block Island- 403 PM EDT Thu Sep 10 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 AM EDT FRIDAY... .TONIGHT...W winds 10 to 15 kt with gusts up to 20 kt, becoming NW after midnight. Seas 4 to 6 ft, subsiding to 3 to 4 ft after midnight. Wave Detail: SW 5 ft at 7 seconds and SE 1 foot at 10 seconds, becoming SW 4 ft at 7 seconds and SE 1 foot at 10 seconds. .FRI...N winds around 10 kt, becoming W in the afternoon. Seas 3 to 4 ft. Wave Detail: SW 4 ft at 7 seconds and SE 1 foot at 10 seconds. .FRI NIGHT...W winds 5 to 10 kt, becoming N after midnight. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 7 seconds and SE 1 foot at 10 seconds. .SAT...E winds around 5 kt, becoming SE in the afternoon. Seas 2 to 3 ft. Wave Detail: S 2 ft at 7 seconds and SE 1 foot at 10 seconds. .SAT NIGHT...S winds 5 to 10 kt. Seas around 2 ft. Wave Detail: S 2 ft at 6 seconds and SE 1 foot at 10 seconds. .SUN...S winds 10 to 15 kt. Seas 2 to 4 ft. Wave Detail: S 3 ft at 5 seconds and SE 1 foot at 10 seconds. Showers likely in the morning. A chance of showers in the afternoon. .SUN NIGHT...W winds 10 to 15 kt. Seas 3 to 4 ft. A chance of showers in the evening. .MON THROUGH TUE NIGHT...S winds 15 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. $$ ANZ232-110900- Nantucket Sound- 403 PM EDT Thu Sep 10 2026 .TONIGHT...W winds 10 to 15 kt, becoming NW after midnight. Gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: W 3 ft at 5 seconds and SE 1 foot at 9 seconds. .FRI...N winds around 10 kt, becoming W in the afternoon. Seas around 2 ft. Wave Detail: NW 2 ft at 4 seconds and SE 1 foot at 10 seconds. .FRI NIGHT...SW winds 5 to 10 kt, becoming N after midnight. Seas around 2 ft. Wave Detail: SW 1 foot at 5 seconds and SE 1 foot at 9 seconds. .SAT...E winds around 5 kt, becoming SE in the afternoon. Seas around 2 ft in the morning, then 1 foot or less. Wave Detail: SW 1 foot at 6 seconds and E 1 foot at 10 seconds, becoming SE 1 foot at 5 seconds and E 1 foot at 10 seconds. .SAT NIGHT...S winds 10 to 15 kt. Seas around 2 ft. Wave Detail: S 2 ft at 3 seconds and SE 1 foot at 9 seconds. .SUN...S winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: S 2 ft at 3 seconds and SE 1 foot at 10 seconds. Showers likely. .SUN NIGHT...SW winds 10 to 15 kt, becoming W after midnight. Seas around 2 ft. A chance of showers in the evening. .MON THROUGH TUE NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-110900- Vineyard Sound- 403 PM EDT Thu Sep 10 2026 .TONIGHT...W winds 10 to 15 kt with gusts up to 20 kt, becoming NW after midnight. Seas 2 to 4 ft. Wave Detail: SW 4 ft at 8 seconds and SE 1 foot at 10 seconds. .FRI...N winds 5 to 10 kt, becoming W in the afternoon. Seas around 2 ft. Wave Detail: W 2 ft at 7 seconds and SE 1 foot at 10 seconds. .FRI NIGHT...W winds 5 to 10 kt, becoming N after midnight. Seas around 2 ft. Wave Detail: SW 2 ft at 7 seconds and SE 1 foot at 10 seconds. .SAT...E winds around 5 kt, becoming SE in the afternoon. Seas around 2 ft. Wave Detail: SW 2 ft at 7 seconds and SE 1 foot at 10 seconds. .SAT NIGHT...S winds around 10 kt. Seas around 2 ft. Wave Detail: S 2 ft at 5 seconds and SE 1 foot at 9 seconds. .SUN...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 SE 1 foot at 10 seconds. Showers likely. .SUN NIGHT...W winds around 10 kt. Seas 2 to 3 ft. A chance of showers in the evening. .MON THROUGH TUE NIGHT...S 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. $$ ANZ234-110900- Buzzards Bay- 403 PM EDT Thu Sep 10 2026 .TONIGHT...W winds 10 to 15 kt with gusts up to 20 kt, becoming NW 5 to 10 kt after midnight. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 7 seconds and SE 1 foot at 10 seconds. .FRI...N winds 5 to 10 kt, becoming W in the afternoon. Seas around 2 ft. Wave Detail: W 2 ft at 7 seconds and SE 1 foot at 10 seconds. .FRI NIGHT...W winds 5 to 10 kt, becoming N after midnight. Seas around 2 ft. Wave Detail: SW 2 ft at 6 seconds and SE 1 foot at 10 seconds. .SAT...E winds around 5 kt, becoming S in the afternoon. Seas around 2 ft. Wave Detail: SW 1 foot at 7 seconds and E 1 foot at 9 seconds. .SAT NIGHT...S winds around 10 kt. Seas around 2 ft. Wave Detail: S 1 foot at 4 seconds and SE 1 foot at 8 seconds. .SUN...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft at 3 seconds and SE 1 foot at 9 seconds. Showers likely in the morning. A chance of showers in the afternoon. .SUN NIGHT...W winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas around 2 ft. A chance of showers in the evening. .MON THROUGH TUE NIGHT...S winds 10 to 15 kt. Seas around 2 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-110900- Rhode Island Sound- 403 PM EDT Thu Sep 10 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING... .TONIGHT...W winds 10 to 15 kt with gusts up to 20 kt, becoming NW after midnight. Seas 3 to 5 ft. Wave Detail: SW 5 ft at 7 seconds and SE 1 foot at 10 seconds. .FRI...N winds around 10 kt, becoming SW in the afternoon. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 7 seconds and SE 1 foot at 10 seconds. .FRI NIGHT...W winds 5 to 10 kt, becoming N after midnight. Seas around 2 ft. Wave Detail: S 2 ft at 6 seconds and SE 1 foot at 10 seconds. .SAT...E winds 5 to 10 kt, becoming SE in the afternoon. Seas around 2 ft. Wave Detail: S 2 ft at 7 seconds and SE 1 foot at 10 seconds. .SAT NIGHT...S winds around 10 kt. Seas around 2 ft. Wave Detail: S 2 ft at 6 seconds and SE 1 foot at 10 seconds. .SUN...S 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 SE 1 foot at 10 seconds. Showers likely. .SUN NIGHT...W winds 10 to 15 kt. Seas 2 to 4 ft. A chance of showers in the evening. .MON THROUGH TUE 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. $$ ANZ237-110900- Block Island Sound- 403 PM EDT Thu Sep 10 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING... .TONIGHT...W winds 10 to 15 kt with gusts up to 20 kt, becoming NW 5 to 10 kt after midnight. Seas 2 to 4 ft. Wave Detail: W 3 ft at 7 seconds and SE 2 ft at 9 seconds. .FRI...N winds 5 to 10 kt, becoming W in the afternoon. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 7 seconds and SE 1 foot at 10 seconds. .FRI NIGHT...W winds 5 to 10 kt, becoming N after midnight. Seas around 2 ft. Wave Detail: SW 2 ft at 6 seconds and SE 1 foot at 10 seconds. .SAT...E winds around 5 kt, becoming SE in the afternoon. Seas around 2 ft. Wave Detail: S 2 ft at 7 seconds and SE 1 foot at 10 seconds. .SAT NIGHT...S winds 5 to 10 kt. Seas around 2 ft. Wave Detail: S 2 ft at 6 seconds and SE 1 foot at 10 seconds. A chance of showers after midnight. .SUN...S winds around 10 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 6 seconds and SE 1 foot at 10 seconds. Showers likely. .SUN NIGHT...SW winds 5 to 10 kt, becoming W after midnight. Seas 2 to 4 ft. .MON THROUGH TUE NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-110900- Boston Harbor- 403 PM EDT Thu Sep 10 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING... .TONIGHT...W winds 10 to 15 kt with gusts up to 20 kt, becoming NW 5 to 10 kt after midnight. Waves around 2 ft this evening, then 1 foot or less. .FRI...NW winds 5 to 10 kt. Waves 1 foot or less. .FRI NIGHT...NW winds around 5 kt. Waves 1 foot or less. .SAT...NE winds around 5 kt, becoming SE in the afternoon. Waves 1 foot or less, then around 2 ft in the afternoon. .SAT NIGHT...S winds 5 to 10 kt. Waves around 2 ft in the evening, then 1 foot or less. A chance of showers after midnight. .SUN...S winds 5 to 10 kt. Waves around 2 ft. Showers likely, mainly in the morning. .SUN NIGHT...SW winds 5 to 10 kt, becoming W after midnight. Waves 1 foot or less. .MON THROUGH TUE NIGHT...S winds 5 to 10 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. $$ ANZ236-110900- Narragansett Bay- 403 PM EDT Thu Sep 10 2026 .TONIGHT...NW winds 5 to 10 kt. Waves 2 to 3 ft. .FRI...N winds 5 to 10 kt, becoming W in the afternoon. Waves around 2 ft. .FRI NIGHT...W winds around 5 kt, becoming N after midnight. Waves around 2 ft. .SAT...NE winds around 5 kt, becoming S in the afternoon. Waves around 2 ft. .SAT NIGHT...S winds 5 to 10 kt. Waves 1 foot or less, then around 2 ft after midnight. .SUN...S winds 10 to 15 kt. Waves around 2 ft. Showers likely. .SUN NIGHT...SW winds 5 to 10 kt, becoming W after midnight. Waves around 2 ft. A chance of showers in the evening. .MON THROUGH TUE NIGHT...S winds 5 to 10 kt. Waves around 2 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ280-110900- Ocean Waters from the Merrimack River to Plymouth from 40 to 60 NM- 403 PM EDT Thu Sep 10 2026 .TONIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. Wave Detail: W 3 ft at 5 seconds and S 3 ft at 7 seconds. .FRI...NW winds 10 to 15 kt with gusts up to 20 kt, becoming W 5 to 10 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: NW 2 ft at 4 seconds and S 2 ft at 8 seconds. .FRI NIGHT...W winds around 10 kt, becoming N after midnight. Seas 2 to 3 ft. Wave Detail: W 2 ft at 4 seconds and SE 2 ft at 7 seconds. .SAT...E winds around 5 kt, becoming S in the afternoon. Seas around 2 ft. Wave Detail: SW 2 ft at 5 seconds and SE 1 foot at 10 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 SE 1 foot at 10 seconds. .SUN AND SUN NIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: S 3 ft at 4 seconds and SE 2 ft at 9 seconds. A chance of showers. .MON THROUGH TUE NIGHT...S winds 10 to 15 kt with gusts up to 25 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. $$ ANZ281-110900- Ocean Waters from Provincetown to Nantucket from 20 to 60 NM- 403 PM EDT Thu Sep 10 2026 .TONIGHT...W winds 10 to 15 kt, becoming NW after midnight. Gusts up to 20 kt. Seas 4 to 6 ft. Wave Detail: SW 6 ft at 8 seconds and SE 2 ft at 10 seconds. .FRI...NW winds 5 to 10 kt. Seas 3 to 5 ft. Wave Detail: NW 4 ft at 7 seconds and SE 1 foot at 10 seconds. .FRI NIGHT...W winds 5 to 10 kt, becoming NW after midnight. Seas 2 to 4 ft. Wave Detail: SW 3 ft at 6 seconds and E 2 ft at 10 seconds. .SAT...E winds around 5 kt, becoming SE in the afternoon. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 6 seconds and SE 2 ft at 9 seconds. .SAT NIGHT...S winds 5 to 10 kt. Gusts up to 20 kt after midnight. Seas 2 to 3 ft. Wave Detail: S 2 ft at 6 seconds and SE 2 ft at 10 seconds. .SUN...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Wave Detail: S 3 ft at 5 seconds and SE 2 ft at 10 seconds. A chance of showers in the morning, then showers likely in the afternoon. .SUN NIGHT...S winds 10 to 15 kt, becoming W after midnight. Gusts up to 20 kt. Seas 3 to 5 ft. A chance of showers. .MON THROUGH TUE NIGHT...S winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ282-110900- Ocean Waters from Marthas Vineyard to Nantucket from 25 to 60 NM- 403 PM EDT Thu Sep 10 2026 .TONIGHT...W winds 10 to 15 kt with gusts up to 20 kt, becoming NW after midnight. Seas 5 to 7 ft. Wave Detail: SW 7 ft at 8 seconds and SE 1 foot at 9 seconds. .FRI...N winds 5 to 10 kt. Seas 3 to 5 ft. Wave Detail: SW 4 ft at 7 seconds and SE 1 foot at 10 seconds. .FRI NIGHT...SW winds around 5 kt, becoming NW after midnight. Seas around 3 ft. Wave Detail: SW 3 ft at 6 seconds and SE 1 foot at 10 seconds. .SAT...E winds around 5 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 7 seconds and SE 2 ft at 9 seconds. .SAT NIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft at 6 seconds and SE 2 ft at 9 seconds. .SUN...S winds around 10 kt. Seas 3 to 5 ft. Wave Detail: S 4 ft at 5 seconds and SE 2 ft at 10 seconds. A chance of showers in the morning. Showers likely in the afternoon. .SUN NIGHT...SW winds around 10 kt. Seas 3 to 5 ft. A chance of showers. .MON THROUGH TUE NIGHT...SE 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. $$ ANZ283-110900- Ocean Waters from Montauk NY to Marthas Vineyard from 25 to 60 NM- 403 PM EDT Thu Sep 10 2026 .TONIGHT...W winds 10 to 15 kt with gusts up to 20 kt, becoming NW after midnight. Seas 4 to 6 ft. Wave Detail: SW 6 ft at 7 seconds and SE 1 foot at 10 seconds. .FRI...NW winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: W 4 ft at 7 seconds and SE 1 foot at 10 seconds. .FRI NIGHT...W winds 5 to 10 kt, becoming N after midnight. Seas around 3 ft. Wave Detail: SW 3 ft at 7 seconds and SE 1 foot at 10 seconds. .SAT...E winds 5 to 10 kt, becoming SE in the afternoon. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 6 seconds and SE 1 foot at 10 seconds. .SAT NIGHT...S winds around 10 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 5 seconds and SE 1 foot at 10 seconds. .SUN...S winds 10 to 15 kt. Seas 4 to 6 ft. Wave Detail: S 4 ft at 5 seconds and SE 1 foot at 10 seconds. Showers likely. .SUN NIGHT...W winds around 10 kt. Seas 3 to 5 ft. A chance of showers in the evening. .MON THROUGH TUE NIGHT...S winds 15 to 20 kt. Seas 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ 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