Coastal Waters Forecast
Issued by NWS Boston, MA
Issued by NWS Boston, MA
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106 FZUS51 KBOX 072303 CWFBOX Coastal Waters Forecast for Massachusetts and Rhode Island National Weather Service Boston/Norton MA 703 PM EDT Mon Sep 7 2026 Coastal waters from the Merrimack River MA to Watch Hill RI out to 60 NM ANZ200-081200- 703 PM EDT Mon Sep 7 2026 .Synopsis for Massachusetts and Rhode Island coastal waters... High pres continues to build in over the waters for the first half of this week. This continues, with tranquil weather, through at least mid week before low pres approaches on Wed/Thu. $$ ANZ250-081200- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 703 PM EDT Mon Sep 7 2026 .TONIGHT...W winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E 2 ft at 8 seconds and W 1 foot at 3 seconds. .TUE...NW winds 5 to 10 kt, becoming NE in the afternoon. Seas around 2 ft. Wave Detail: NW 2 ft at 3 seconds and E 1 foot at 9 seconds. .TUE NIGHT...SE winds around 5 kt. Seas around 2 ft. Wave Detail: W 1 foot at 3 seconds and E 1 foot at 9 seconds. .WED...SE winds 5 to 10 kt, becoming S 15 to 20 kt with gusts up to 25 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 4 seconds and E 1 foot at 9 seconds. .WED NIGHT...S winds 15 to 20 kt, becoming SW 20 to 25 kt after midnight. Gusts up to 30 kt. Seas 3 to 4 ft. Wave Detail: S 4 ft at 5 seconds and SE 2 ft at 9 seconds. A chance of showers after midnight. .THU AND THU NIGHT...W winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to 4 ft. Wave Detail: SW 4 ft at 5 seconds and SE 2 ft at 8 seconds. .FRI THROUGH SAT NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-081200- Massachusetts Bay and Ipswich Bay- 703 PM EDT Mon Sep 7 2026 .TONIGHT...W winds 5 to 10 kt. Seas around 2 ft. Wave Detail: NE 2 ft at 9 seconds and NW 1 foot at 3 seconds. .TUE...NW winds 5 to 10 kt, becoming NE in the afternoon. Seas around 2 ft. Wave Detail: NW 1 foot at 3 seconds and E 1 foot at 9 seconds. .TUE NIGHT...SE winds 5 to 10 kt. Seas 1 foot or less. Wave Detail: S 1 foot at 2 seconds and E 1 foot at 7 seconds. .WED...SE winds 5 to 10 kt, becoming S 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 1 foot or less, then 2 to 3 ft in the afternoon. Wave Detail: SE 1 foot at 2 seconds and E 1 foot at 9 seconds, becoming SE 2 ft at 4 seconds and E 1 foot at 9 seconds. .WED NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 4 seconds and E 2 ft at 9 seconds. A chance of showers after midnight. .THU AND THU NIGHT...W winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 4 seconds and E 1 foot at 9 seconds. .FRI THROUGH SAT NIGHT...S winds 5 to 10 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. $$ ANZ231-081200- Cape Cod Bay- 703 PM EDT Mon Sep 7 2026 .TONIGHT...SW winds 5 to 10 kt, becoming NW after midnight. Seas around 2 ft. Wave Detail: N 2 ft at 5 seconds. .TUE...NW winds 5 to 10 kt, becoming N in the afternoon. Seas 1 foot or less. Wave Detail: N 1 foot at 4 seconds. .TUE NIGHT...SE winds around 5 kt. Seas 1 foot or less. Wave Detail: NW 1 foot at 3 seconds and NE 1 foot at 7 seconds. .WED...SE winds 5 to 10 kt, becoming S 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: SE 1 foot at 3 seconds and NE 1 foot at 6 seconds. .WED NIGHT AND THU...SW winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 5 ft. Wave Detail: SW 3 ft at 4 seconds and E 1 foot at 8 seconds. .THU NIGHT...W winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 3 seconds and SE 1 foot at 8 seconds. .FRI THROUGH SAT NIGHT...S winds 5 to 10 kt with gusts up to 20 kt. Seas around 2 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-081200- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 NM- 703 PM EDT Mon Sep 7 2026 .TONIGHT...SW winds 5 to 10 kt, becoming NW after midnight. Seas 2 to 3 ft. Wave Detail: NE 3 ft at 7 seconds and W 1 foot at 4 seconds. .TUE...NW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E 2 ft at 8 seconds and W 1 foot at 3 seconds. .TUE NIGHT...SE winds around 5 kt. Seas around 2 ft. Wave Detail: E 2 ft at 8 seconds and W 1 foot at 4 seconds. .WED...S winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: S 3 ft at 4 seconds and E 2 ft at 8 seconds. .WED NIGHT...S winds 15 to 20 kt, becoming SW 20 to 25 kt after midnight. Gusts up to 30 kt. Seas 2 to 3 ft, building to 3 to 5 ft after midnight. Wave Detail: S 3 ft at 4 seconds and E 1 foot at 9 seconds, becoming SW 5 ft at 5 seconds and SE 1 foot at 9 seconds. .THU...SW winds 20 to 25 kt with gusts up to 30 kt. Seas 4 to 6 ft. Wave Detail: SW 6 ft at 6 seconds and SE 1 foot at 9 seconds. .THU NIGHT...SW winds 15 to 20 kt, becoming W 10 to 15 kt after midnight. Gusts up to 25 kt. Seas 4 to 6 ft. A chance of showers. .FRI AND FRI NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt, becoming SE around 5 kt. Seas 2 to 4 ft. .SAT AND SAT NIGHT...SE winds 5 to 10 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. $$ ANZ255-081200- Coastal Waters extending out to 25 NM South of Marthas Vineyard and Nantucket- 703 PM EDT Mon Sep 7 2026 .TONIGHT...W winds 5 to 10 kt, becoming NW after midnight. Seas 2 to 3 ft. Wave Detail: W 2 ft at 4 seconds and E 2 ft at 9 seconds. .TUE...NW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: W 2 ft at 4 seconds and E 2 ft at 9 seconds. .TUE NIGHT...W winds around 5 kt, becoming S after midnight. Seas around 2 ft. Wave Detail: SW 1 foot at 4 seconds and E 1 foot at 9 seconds. .WED...S winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 4 seconds and E 1 foot at 9 seconds. .WED NIGHT...SW winds 15 to 20 kt, increasing to 20 to 25 kt after midnight. Gusts up to 30 kt. Seas 2 to 4 ft, building to 5 to 7 ft after midnight. Wave Detail: SW 4 ft at 5 seconds and SE 1 foot at 10 seconds, becoming SW 7 ft at 7 seconds and SE 1 foot at 10 seconds. .THU...SW winds 20 to 25 kt with gusts up to 30 kt. Seas 6 to 8 ft. Wave Detail: SW 8 ft at 7 seconds and E 1 foot at 9 seconds. .THU NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt, becoming W 10 to 15 kt after midnight. Seas 5 to 8 ft, subsiding to 4 to 6 ft after midnight. A chance of showers. .FRI...NW winds 10 to 15 kt. Seas 3 to 5 ft. .FRI NIGHT THROUGH SAT NIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-081200- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 NM South of Block Island- 703 PM EDT Mon Sep 7 2026 .TONIGHT...W winds around 10 kt, becoming NW after midnight. Seas around 2 ft. Wave Detail: W 2 ft at 3 seconds and E 2 ft at 9 seconds. .TUE...NW winds 5 to 10 kt, becoming W in the afternoon. Seas around 2 ft. Wave Detail: NW 2 ft at 4 seconds and E 1 foot at 9 seconds. .TUE NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 4 seconds and SE 1 foot at 9 seconds. .WED...S winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 4 seconds and SE 1 foot at 9 seconds. .WED NIGHT AND THU...SW winds 20 to 25 kt with gusts up to 30 kt. Seas 5 to 7 ft. Wave Detail: SW 7 ft at 7 seconds and SE 4 ft at 9 seconds. .THU NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt, becoming NW 10 to 15 kt after midnight. Seas 5 to 8 ft, subsiding to 4 to 6 ft after midnight. Wave Detail: SW 6 ft at 7 seconds and SE 1 foot at 10 seconds, becoming SW 5 ft at 7 seconds and SE 1 foot at 10 seconds. A chance of showers. .FRI...NW winds 10 to 15 kt. Seas 3 to 5 ft. .FRI NIGHT THROUGH SAT NIGHT...SE winds 5 to 10 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. $$ ANZ232-081200- Nantucket Sound- 703 PM EDT Mon Sep 7 2026 .TONIGHT...SW winds 5 to 10 kt, becoming NW after midnight. Seas around 2 ft. Wave Detail: SW 1 foot at 3 seconds and E 1 foot at 9 seconds. .TUE...NW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: NW 1 foot at 3 seconds and E 1 foot at 9 seconds. .TUE NIGHT...S winds 5 to 10 kt. Seas 1 foot or less. Wave Detail: SW 1 foot at 4 seconds and E 1 foot at 9 seconds. .WED...S winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: S 2 ft at 3 seconds and E 1 foot at 9 seconds. .WED NIGHT AND THU...SW winds 20 to 25 kt with gusts up to 30 kt. Seas 3 to 5 ft. Wave Detail: SW 5 ft at 5 seconds and E 1 foot at 9 seconds. .THU NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt, becoming W 10 to 15 kt after midnight. Seas 3 to 5 ft, subsiding to 2 to 3 ft after midnight. Wave Detail: SW 4 ft at 5 seconds and SE 1 foot at 8 seconds, becoming W 2 ft at 5 seconds and SE 1 foot at 9 seconds. A chance of showers. .FRI THROUGH SAT NIGHT...S winds 10 to 15 kt. Seas 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-081200- Vineyard Sound- 703 PM EDT Mon Sep 7 2026 .TONIGHT...W winds around 10 kt, becoming NW after midnight. Seas 1 foot or less. Wave Detail: SW 1 foot at 3 seconds and SE 1 foot at 10 seconds. .TUE...NW winds 5 to 10 kt, becoming SW in the afternoon. Seas 1 foot or less. Wave Detail: NW 1 foot at 4 seconds and E 1 foot at 9 seconds. .TUE NIGHT...SW winds 5 to 10 kt, becoming S after midnight. Seas 1 foot or less. Wave Detail: SW 1 foot at 4 seconds and SE 1 foot at 10 seconds. .WED...S winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 1 foot or less, then 2 to 3 ft in the afternoon. Wave Detail: SW 1 foot at 4 seconds and SE 1 foot at 9 seconds, becoming SW 2 ft at 4 seconds and SE 1 foot at 9 seconds. .WED NIGHT AND THU...SW winds 20 to 25 kt with gusts up to 30 kt. Seas 4 to 6 ft. Wave Detail: SW 6 ft at 7 seconds and SE 3 ft at 8 seconds. .THU NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt, becoming W around 10 kt after midnight. Seas 3 to 5 ft. Wave Detail: SW 5 ft at 8 seconds and SE 1 foot at 8 seconds. A chance of showers in the evening. .FRI THROUGH SAT NIGHT...S winds 5 to 10 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. $$ ANZ234-081200- Buzzards Bay- 703 PM EDT Mon Sep 7 2026 .TONIGHT...W winds 5 to 10 kt, becoming NW after midnight. Seas 1 foot or less. Wave Detail: SW 1 foot at 3 seconds and E 1 foot at 8 seconds. .TUE...NW winds 5 to 10 kt, becoming SW in the afternoon. Seas 1 foot or less. Wave Detail: NW 1 foot at 3 seconds and E 1 foot at 8 seconds. .TUE NIGHT...S winds 5 to 10 kt, becoming SE after midnight. Seas 1 foot or less. Wave Detail: SW 1 foot at 4 seconds and E 1 foot at 8 seconds. .WED...SE winds 5 to 10 kt, becoming S 10 to 15 kt with gusts up to 25 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 3 seconds and SE 1 foot at 8 seconds. .WED NIGHT AND THU...SW winds 20 to 25 kt with gusts up to 30 kt. Seas 3 to 5 ft. Wave Detail: SW 5 ft at 7 seconds and SE 3 ft at 9 seconds. .THU NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt, becoming W around 10 kt after midnight. Seas 2 to 4 ft. Wave Detail: SW 4 ft at 7 seconds and SE 3 ft at 8 seconds. .FRI THROUGH SAT NIGHT...S winds 5 to 10 kt. Seas around 2 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-081200- Rhode Island Sound- 703 PM EDT Mon Sep 7 2026 .TONIGHT...W winds around 10 kt, becoming NW after midnight. Seas around 2 ft. Wave Detail: W 1 foot at 3 seconds and SE 1 foot at 9 seconds. .TUE...NW winds 5 to 10 kt, becoming SW in the afternoon. Seas 1 foot or less, then around 2 ft in the afternoon. Wave Detail: W 1 foot at 3 seconds and SE 1 foot at 8 seconds, becoming SW 1 foot at 4 seconds and SE 1 foot at 8 seconds. .TUE NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SW 1 foot at 4 seconds and SE 1 foot at 9 seconds. .WED...S winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 1 foot or less, then 2 to 3 ft in the afternoon. Wave Detail: SW 1 foot at 4 seconds and SE 1 foot at 8 seconds, becoming S 2 ft at 4 seconds and SE 1 foot at 8 seconds. .WED NIGHT...SW winds 15 to 20 kt, increasing to 20 to 25 kt after midnight. Gusts up to 30 kt. Seas 3 to 5 ft, building to 5 to 7 ft after midnight. Wave Detail: SW 5 ft at 5 seconds and SE 1 foot at 10 seconds, becoming SW 7 ft at 7 seconds and SE 1 foot at 11 seconds. .THU...SW winds 20 to 25 kt with gusts up to 30 kt. Seas 5 to 7 ft. Wave Detail: SW 7 ft at 7 seconds and S 6 ft at 9 seconds. .THU NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt, becoming NW 10 to 15 kt after midnight. Seas 4 to 6 ft. A chance of showers in the evening. .FRI AND FRI NIGHT...NW winds 10 to 15 kt, becoming N 5 to 10 kt. Seas 2 to 4 ft. .SAT AND SAT NIGHT...E winds 5 to 10 kt, becoming S. 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. $$ ANZ237-081200- Block Island Sound- 703 PM EDT Mon Sep 7 2026 .TONIGHT...NW winds 5 to 10 kt. Seas 1 foot or less. Wave Detail: W 1 foot at 3 seconds and SE 1 foot at 9 seconds. .TUE...NW winds 5 to 10 kt, becoming W in the afternoon. Seas 1 foot or less, then around 2 ft in the afternoon. Wave Detail: NW 1 foot at 3 seconds and SE 1 foot at 9 seconds, becoming W 1 foot at 3 seconds and SE 1 foot at 9 seconds. .TUE NIGHT...W winds 5 to 10 kt. Seas around 2 ft in the evening, then 1 foot or less. Wave Detail: W 1 foot at 3 seconds and SE 1 foot at 9 seconds. .WED...S winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 25 kt in the afternoon. Seas 1 foot or less, then 2 to 3 ft in the afternoon. Wave Detail: S 1 foot at 3 seconds and SE 1 foot at 9 seconds, becoming S 2 ft at 3 seconds and SE 1 foot at 9 seconds. .WED NIGHT AND THU...SW winds 20 to 25 kt with gusts up to 30 kt. Seas 4 to 6 ft. Wave Detail: SW 5 ft at 6 seconds and SE 4 ft at 10 seconds. .THU NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt, becoming NW after midnight. Seas 3 to 5 ft. Wave Detail: SW 4 ft at 7 seconds. A chance of showers in the evening. .FRI...NW winds 5 to 10 kt. Seas 2 to 4 ft. .FRI NIGHT THROUGH SAT NIGHT...S winds 5 to 10 kt. Seas around 2 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-081200- Boston Harbor- 703 PM EDT Mon Sep 7 2026 .TONIGHT...NW winds 5 to 10 kt. Waves 1 foot or less. .TUE...NW winds 5 to 10 kt, becoming NE in the afternoon. Waves 1 foot or less. .TUE NIGHT...SE winds around 5 kt. Waves 1 foot or less. .WED...SE winds around 5 kt, becoming S 10 to 15 kt with gusts up to 20 kt in the afternoon. Waves 1 foot or less, then around 2 ft in the afternoon. .WED NIGHT AND THU...W winds 10 to 15 kt with gusts up to 25 kt. Waves around 2 ft. A chance of showers through the day. .THU NIGHT...W winds 10 to 15 kt. Gusts up to 20 kt in the evening. Waves around 2 ft in the evening, then 1 foot or less. .FRI THROUGH SAT 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. $$ ANZ236-081200- Narragansett Bay- 703 PM EDT Mon Sep 7 2026 .TONIGHT...NW winds 5 to 10 kt. Waves 1 foot or less. .TUE...W winds 5 to 10 kt. Waves 1 foot or less. .TUE NIGHT...S winds 5 to 10 kt, becoming NE after midnight. Waves 1 foot or less. .WED...SE winds 5 to 10 kt, becoming S 10 to 15 kt with gusts up to 20 kt in the afternoon. Waves 1 foot or less, then 2 to 3 ft in the afternoon. .WED NIGHT AND THU...SW winds 15 to 20 kt with gusts up to 25 kt. Waves 2 to 4 ft. .THU NIGHT...W winds 10 to 15 kt with gusts up to 20 kt, becoming NW 5 to 10 kt after midnight. Waves 2 to 4 ft. .FRI THROUGH SAT NIGHT...S winds 5 to 10 kt. Waves around 2 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ280-081200- Ocean Waters from the Merrimack River to Plymouth from 40 to 60 NM- 703 PM EDT Mon Sep 7 2026 .TONIGHT...W winds 5 to 10 kt, becoming NW after midnight. Seas 2 to 3 ft. Wave Detail: W 2 ft at 4 seconds and E 2 ft at 8 seconds. .TUE...NW winds around 10 kt, becoming N in the afternoon. Seas around 2 ft. Wave Detail: NW 2 ft at 3 seconds and E 1 foot at 9 seconds. .TUE NIGHT...SE winds 5 to 10 kt. Seas around 2 ft. Wave Detail: W 1 foot at 3 seconds and E 1 foot at 9 seconds. .WED...SE winds 10 to 15 kt, becoming S 15 to 20 kt in the afternoon. Gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 4 seconds and E 1 foot at 9 seconds. .WED NIGHT AND THU...SW winds 20 to 25 kt with gusts up to 35 kt. Seas 4 to 6 ft. Wave Detail: S 6 ft at 7 seconds. A chance of showers through the day. .THU NIGHT...W winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Gusts up to 25 kt. Seas 3 to 5 ft. Wave Detail: SW 4 ft at 6 seconds. .FRI AND FRI NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt, becoming N 5 to 10 kt. Seas 2 to 4 ft. .SAT AND SAT NIGHT...SE winds 5 to 10 kt, becoming S. 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. $$ ANZ281-081200- Ocean Waters from Provincetown to Nantucket from 20 to 60 NM- 703 PM EDT Mon Sep 7 2026 .TONIGHT...W winds 5 to 10 kt. Seas 2 to 4 ft. Wave Detail: NE 3 ft at 9 seconds and W 2 ft at 4 seconds. .TUE...NW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: W 2 ft at 4 seconds and E 2 ft at 9 seconds. .TUE NIGHT...NE winds around 5 kt, becoming SE after midnight. Seas 2 to 3 ft. Wave Detail: NW 2 ft at 4 seconds and E 2 ft at 9 seconds. .WED...S winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: S 3 ft at 4 seconds and E 2 ft at 8 seconds. .WED NIGHT...S winds 15 to 20 kt with gusts up to 25 kt, becoming SW 20 to 25 kt with gusts up to 35 kt after midnight. Seas 2 to 4 ft, building to 4 to 6 ft after midnight. Wave Detail: S 3 ft at 4 seconds and SE 2 ft at 9 seconds, becoming SW 5 ft at 5 seconds and SE 2 ft at 9 seconds. .THU...SW winds 20 to 25 kt with gusts up to 35 kt. Seas 5 to 8 ft. Wave Detail: SW 7 ft at 7 seconds and SE 2 ft at 9 seconds. .THU NIGHT...SW winds 15 to 20 kt, becoming W 10 to 15 kt after midnight. Gusts up to 25 kt. Seas 5 to 8 ft. A chance of showers. .FRI...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 6 ft. .FRI NIGHT AND SAT...NW winds around 5 kt, becoming E. Seas 2 to 4 ft. .SAT NIGHT...SE winds 5 to 10 kt. Seas around 2 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ282-081200- Ocean Waters from Marthas Vineyard to Nantucket from 25 to 60 NM- 703 PM EDT Mon Sep 7 2026 .TONIGHT...W winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: NE 3 ft at 9 seconds and W 2 ft at 4 seconds. .TUE...NW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: NE 3 ft at 9 seconds and W 2 ft at 4 seconds. .TUE NIGHT...NW winds around 5 kt, becoming S after midnight. Seas 2 to 3 ft. Wave Detail: E 2 ft at 9 seconds and W 1 foot at 4 seconds. .WED...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft at 3 seconds and E 2 ft at 9 seconds. Patchy fog in the morning with vsby 1 NM or less. .WED NIGHT...SW winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to 4 ft, building to 4 to 6 ft after midnight. Wave Detail: SW 4 ft at 5 seconds and SE 2 ft at 9 seconds, becoming SW 6 ft at 7 seconds and SE 2 ft at 9 seconds. .THU...SW winds 20 to 25 kt with gusts up to 30 kt. Seas 6 to 9 ft, building to 8 to 10 ft in the afternoon. Wave Detail: SW 9 ft at 8 seconds and SE 2 ft at 9 seconds, becoming SW 9 ft at 8 seconds and SE 1 foot at 10 seconds. .THU NIGHT...SW winds 15 to 20 kt, becoming W 10 to 15 kt after midnight. Gusts up to 25 kt. Seas 7 to 9 ft, subsiding to 5 to 8 ft after midnight. A chance of showers. .FRI...NW winds 5 to 10 kt. Seas 4 to 6 ft. A chance of showers. .FRI NIGHT THROUGH SAT NIGHT...SE winds 5 to 10 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. $$ ANZ283-081200- Ocean Waters from Montauk NY to Marthas Vineyard from 25 to 60 NM- 703 PM EDT Mon Sep 7 2026 .TONIGHT...NW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 9 seconds and W 2 ft at 4 seconds. .TUE...NW winds around 10 kt. Seas 2 to 3 ft. Wave Detail: W 2 ft at 4 seconds and E 2 ft at 9 seconds. .TUE NIGHT...W winds 5 to 10 kt. Seas around 2 ft. Wave Detail: W 2 ft at 4 seconds and E 2 ft at 9 seconds. .WED...SW winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 4 seconds and E 1 foot at 9 seconds. .WED NIGHT...SW winds 15 to 20 kt, increasing to 20 to 25 kt after midnight. Gusts up to 30 kt. Seas 3 to 5 ft, building to 5 to 8 ft after midnight. Wave Detail: SW 5 ft at 5 seconds and E 1 foot at 10 seconds, becoming SW 8 ft at 7 seconds and SE 1 foot at 9 seconds. .THU...SW winds 20 to 25 kt with gusts up to 30 kt. Seas 8 to 10 ft. Wave Detail: SW 9 ft at 8 seconds and E 1 foot at 9 seconds. .THU NIGHT...SW winds 15 to 20 kt with gusts up to 30 kt, becoming W 10 to 15 kt with gusts up to 20 kt after midnight. Seas 6 to 9 ft, subsiding to 5 to 7 ft after midnight. A chance of showers. .FRI...NW winds 10 to 15 kt. Seas 3 to 5 ft. .FRI NIGHT THROUGH SAT NIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ 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