Coastal Waters Forecast
Issued by NWS Boston, MA
Issued by NWS Boston, MA
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684 FZUS51 KBOX 102006 CWFBOX Coastal Waters Forecast for Massachusetts and Rhode Island National Weather Service Boston/Norton MA 405 PM EDT Mon Aug 10 2026 Coastal waters from the Merrimack River MA to Watch Hill RI out to 60 NM ANZ200-110900- 405 PM EDT Mon Aug 10 2026 .Synopsis for Massachusetts and Rhode Island coastal waters... Weak high pressure over the region today followed by the passage of a cold front overnight into Tue. High pres follows for the middle of the week. This high moves east of the region Wed night with the next cold frontal passage sometime Thu into Thu evening bringing scattered showers and storms. A ridge of high pres then builds in from the west Fri into Sat. $$ ANZ250-110900- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 405 PM EDT Mon Aug 10 2026 .TONIGHT...S winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 3 seconds and W 1 foot at 2 seconds. A slight chance of showers and tstms after midnight. .TUE...W winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 4 seconds and SE 1 foot at 3 seconds. .TUE NIGHT...NW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: NW 1 foot at 3 seconds and S 1 foot at 6 seconds. .WED...NW winds around 5 kt, becoming SE around 5 kt in the afternoon. Seas around 2 ft. Wave Detail: NW 1 foot at 3 seconds and S 1 foot at 5 seconds. .WED NIGHT...S winds 5 to 10 kt, becoming SW after midnight. Seas around 2 ft. Wave Detail: S 2 ft at 3 seconds and N 1 foot at 3 seconds. .THU AND THU NIGHT...W winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: W 2 ft at 3 seconds and SE 1 foot at 3 seconds. A chance of showers. .FRI THROUGH SAT NIGHT...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 3 ft. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-110900- Massachusetts Bay and Ipswich Bay- 405 PM EDT Mon Aug 10 2026 .TONIGHT...SW winds 5 to 10 kt. Seas around 2 ft this evening, then 1 foot or less. Wave Detail: W 1 foot at 2 seconds and SE 1 foot at 3 seconds, becoming E 1 foot at 3 seconds and SW 1 foot at 3 seconds. A slight chance of showers and tstms after midnight. .TUE...W winds 5 to 10 kt. Seas 1 foot or less. Wave Detail: S 1 foot at 3 seconds and E 1 foot at 9 seconds. .TUE NIGHT...NW winds 5 to 10 kt. Seas 1 foot or less. Wave Detail: NW 1 foot at 3 seconds and S 1 foot at 4 seconds. .WED...NW 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 2 seconds and W 1 foot at 3 seconds, becoming N 1 foot at 2 seconds and S 1 foot at 3 seconds. .WED NIGHT...S winds 5 to 10 kt, becoming W after midnight. Seas around 2 ft in the evening, then 1 foot or less. Wave Detail: N 1 foot at 3 seconds and SE 1 foot at 3 seconds, becoming S 1 foot at 3 seconds and E 1 foot at 3 seconds. .THU AND THU NIGHT...W winds 5 to 10 kt. Seas around 2 ft. Wave Detail: W 1 foot at 2 seconds and SE 1 foot at 3 seconds. A chance of showers. .FRI THROUGH SAT NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. 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. $$ ANZ231-110900- Cape Cod Bay- 405 PM EDT Mon Aug 10 2026 .TONIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E 1 foot at 3 seconds and SW 1 foot at 3 seconds. A slight chance of showers after midnight. .TUE...W winds 5 to 10 kt. Seas around 2 ft in the morning, then 1 foot or less. Wave Detail: SW 1 foot at 3 seconds and E 1 foot at 8 seconds, becoming W 1 foot at 2 seconds and S 1 foot at 5 seconds. .TUE NIGHT...NW winds around 5 kt. Seas 1 foot or less. Wave Detail: NW 1 foot at 2 seconds and N 1 foot at 3 seconds. .WED...NW winds around 5 kt, becoming E in the afternoon. Seas 1 foot or less. Wave Detail: NW 1 foot at 3 seconds and N 1 foot at 3 seconds. .WED NIGHT...S winds 5 to 10 kt, becoming SW after midnight. Seas 1 foot or less. Wave Detail: S 1 foot at 2 seconds and N 1 foot at 3 seconds. .THU AND THU NIGHT...W winds 5 to 10 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: SW 1 foot at 2 seconds and E 1 foot at 3 seconds. A chance of showers. .FRI THROUGH SAT NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-110900- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 NM- 405 PM EDT Mon Aug 10 2026 .TONIGHT...SW winds around 10 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 4 seconds and NE 1 foot at 3 seconds. A slight chance of showers after midnight. .TUE...W winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 2 ft at 7 seconds and W 1 foot at 3 seconds. .TUE NIGHT...W winds 5 to 10 kt, becoming NW after midnight. Seas 2 to 3 ft. Wave Detail: SE 2 ft at 7 seconds and NW 1 foot at 3 seconds. .WED...NW winds around 5 kt, becoming NE in the afternoon. Seas around 2 ft. Wave Detail: SE 2 ft at 7 seconds and NW 1 foot at 3 seconds. .WED NIGHT AND THU...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 5 seconds and N 1 foot at 3 seconds. .THU NIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas 2 to 3 ft. Wave Detail: S 3 ft at 6 seconds and W 2 ft at 3 seconds. A chance of showers. .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...SW winds 10 to 15 kt with gusts up to 25 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. $$ ANZ255-110900- Coastal Waters extending out to 25 NM South of Marthas Vineyard and Nantucket- 405 PM EDT Mon Aug 10 2026 .TONIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 6 seconds and NE 1 foot at 3 seconds. A slight chance of showers after midnight. .TUE...W winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 5 seconds and E 1 foot at 9 seconds. .TUE NIGHT...W winds 10 to 15 kt with gusts up to 20 kt, becoming NW 5 to 10 kt after midnight. Seas 2 to 3 ft. Wave Detail: W 3 ft at 5 seconds and N 1 foot at 3 seconds. .WED...N winds 5 to 10 kt, becoming E in the afternoon. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 5 seconds and N 1 foot at 3 seconds. .WED NIGHT...S winds 5 to 10 kt, becoming SW after midnight. Seas 2 to 3 ft. Wave Detail: SE 2 ft at 7 seconds and NW 1 foot at 3 seconds. .THU AND THU NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Wave Detail: S 3 ft at 6 seconds and W 2 ft at 2 seconds. A chance of showers. .FRI...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of showers. .FRI NIGHT THROUGH SAT NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-110900- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 NM South of Block Island- 405 PM EDT Mon Aug 10 2026 .TONIGHT...SW winds 10 to 15 kt. Seas around 3 ft. Wave Detail: S 3 ft at 6 seconds and W 2 ft at 3 seconds. A slight chance of showers after midnight. .TUE...W winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Seas around 3 ft. Wave Detail: SW 3 ft at 5 seconds and SE 1 foot at 9 seconds. .TUE NIGHT...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 6 seconds and NW 1 foot at 3 seconds. .WED...N winds around 5 kt, becoming SE in the afternoon. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 5 seconds and N 1 foot at 3 seconds. .WED NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft at 7 seconds and W 1 foot at 2 seconds. .THU AND THU NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Wave Detail: S 3 ft at 6 seconds and E 1 foot at 3 seconds. A chance of showers. .FRI THROUGH SAT NIGHT...W 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. $$ ANZ232-110900- Nantucket Sound- 405 PM EDT Mon Aug 10 2026 .TONIGHT...SW winds around 10 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 3 seconds and E 1 foot at 3 seconds. A slight chance of showers after midnight. .TUE...W winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Seas around 2 ft. Wave Detail: W 2 ft at 3 seconds and S 2 ft at 6 seconds. .TUE NIGHT...W winds 10 to 15 kt with gusts up to 20 kt, becoming NW 5 to 10 kt after midnight. Seas around 2 ft. Wave Detail: SW 2 ft at 4 seconds and N 1 foot at 3 seconds. .WED...N winds around 5 kt, becoming E in the afternoon. Seas around 2 ft. Wave Detail: N 1 foot at 2 seconds and SW 1 foot at 6 seconds. .WED NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: N 1 foot at 3 seconds and W 1 foot at 3 seconds. .THU AND THU NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 4 seconds and NE 1 foot at 3 seconds. A chance of showers. .FRI...NW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. A chance of showers. .FRI NIGHT THROUGH SAT NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-110900- Vineyard Sound- 405 PM EDT Mon Aug 10 2026 .TONIGHT...SW winds around 10 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 4 seconds and SE 1 foot at 2 seconds. A slight chance of showers after midnight. .TUE...W winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Seas around 2 ft. Wave Detail: W 2 ft at 4 seconds and SE 1 foot at 9 seconds. .TUE NIGHT...W winds 10 to 15 kt, becoming NW 5 to 10 kt after midnight. Seas around 2 ft. Wave Detail: W 2 ft at 5 seconds and N 1 foot at 3 seconds. .WED...N winds around 5 kt, becoming SE in the afternoon. Seas around 2 ft. Wave Detail: SW 2 ft at 5 seconds and N 1 foot at 3 seconds. .WED NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 4 seconds and NE 1 foot at 5 seconds. .THU AND THU 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 9 seconds. A chance of showers. .FRI...NW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. A chance of showers. .FRI NIGHT THROUGH SAT NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ234-110900- Buzzards Bay- 405 PM EDT Mon Aug 10 2026 .TONIGHT...SW winds 10 to 15 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 4 seconds and E 1 foot at 2 seconds. A slight chance of showers after midnight. .TUE...W winds 5 to 10 kt, becoming SW 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas around 2 ft. Wave Detail: SW 2 ft at 4 seconds and SE 1 foot at 9 seconds. .TUE NIGHT...W winds 10 to 15 kt, becoming NW around 5 kt after midnight. Seas around 2 ft. Wave Detail: W 2 ft at 5 seconds and N 1 foot at 3 seconds. .WED...N winds around 5 kt, becoming SE in the afternoon. Seas around 2 ft. Wave Detail: N 1 foot at 2 seconds and W 1 foot at 4 seconds. .WED NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 4 seconds and NE 1 foot at 3 seconds. .THU AND THU NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Wave Detail: SW 2 ft at 4 seconds and NE 1 foot at 4 seconds. A chance of showers. .FRI THROUGH SAT NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-110900- Rhode Island Sound- 405 PM EDT Mon Aug 10 2026 .TONIGHT...SW winds around 10 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 6 seconds and SE 1 foot at 3 seconds. A slight chance of showers after midnight. .TUE...W winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: S 3 ft at 6 seconds and W 1 foot at 3 seconds. .TUE NIGHT...W winds 10 to 15 kt, becoming NW 5 to 10 kt after midnight. Seas 2 to 3 ft. Wave Detail: W 3 ft at 5 seconds and N 1 foot at 3 seconds. .WED...N winds around 5 kt, becoming S in the afternoon. Seas around 2 ft. Wave Detail: S 2 ft at 6 seconds and N 1 foot at 2 seconds. .WED NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: S 2 ft at 7 seconds and W 1 foot at 3 seconds. .THU AND THU NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 6 seconds and W 2 ft at 3 seconds. A chance of showers. .FRI THROUGH SAT NIGHT...W 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. $$ ANZ237-110900- Block Island Sound- 405 PM EDT Mon Aug 10 2026 .TONIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft at 6 seconds and E 1 foot at 3 seconds. A slight chance of showers after midnight. .TUE...W winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas around 2 ft. Wave Detail: S 2 ft at 6 seconds and W 1 foot at 3 seconds. .TUE NIGHT...W winds 5 to 10 kt, becoming NW after midnight. Seas around 2 ft. Wave Detail: S 2 ft at 6 seconds and NW 1 foot at 3 seconds. .WED...N winds around 5 kt, becoming S in the afternoon. Seas around 2 ft. Wave Detail: S 2 ft at 6 seconds and NW 1 foot at 2 seconds. .WED NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: S 2 ft at 4 seconds and W 1 foot at 2 seconds. .THU AND THU NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 7 seconds and SE 1 foot at 2 seconds. A chance of showers through the night. .FRI THROUGH SAT NIGHT...W winds 10 to 15 kt. Seas 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-110900- Boston Harbor- 405 PM EDT Mon Aug 10 2026 .TONIGHT...S winds 5 to 10 kt, becoming SW after midnight. Waves around 2 ft this evening, then 1 foot or less. .TUE...W winds 5 to 10 kt. Waves 1 foot or less, then around 2 ft in the afternoon. .TUE NIGHT...NW winds 5 to 10 kt. Waves 1 foot or less. .WED...NW winds around 5 kt, becoming E in the afternoon. Waves 1 foot or less. .WED NIGHT...S winds 5 to 10 kt, becoming W after midnight. Waves 1 foot or less. .THU AND THU NIGHT...W winds 5 to 10 kt. Waves around 2 ft. A chance of showers. .FRI THROUGH SAT NIGHT...SW 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. $$ ANZ236-110900- Narragansett Bay- 405 PM EDT Mon Aug 10 2026 .TONIGHT...SW winds 5 to 10 kt. Waves around 2 ft. .TUE...W winds 5 to 10 kt. Waves around 2 ft. .TUE NIGHT...NW winds 5 to 10 kt. Waves around 2 ft. .WED...N winds around 5 kt, becoming S in the afternoon. Waves around 2 ft. .WED NIGHT...SW winds 5 to 10 kt. Waves around 2 ft. .THU AND THU NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft. A chance of showers through the night. .FRI THROUGH SAT NIGHT...W winds 5 to 10 kt with gusts up to 20 kt. Waves around 2 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ280-110900- Ocean Waters from the Merrimack River to Plymouth from 40 to 60 NM- 405 PM EDT Mon Aug 10 2026 .TONIGHT...S winds 10 to 15 kt. Gusts up to 20 kt after midnight. Seas 2 to 3 ft. Wave Detail: S 2 ft at 5 seconds and W 1 foot at 3 seconds. A slight chance of showers and tstms after midnight. .TUE...W winds 5 to 10 kt. Gusts up to 20 kt in the morning. Seas 2 to 3 ft. Wave Detail: W 2 ft at 3 seconds and S 2 ft at 6 seconds. .TUE NIGHT...NW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: NW 2 ft at 3 seconds and S 2 ft at 6 seconds. .WED...NW winds 5 to 10 kt, becoming SW in the afternoon. Seas around 2 ft. Wave Detail: N 2 ft at 3 seconds and S 1 foot at 6 seconds. .WED NIGHT AND THU...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 2 ft at 7 seconds and NW 1 foot at 3 seconds. .THU NIGHT...SW winds 10 to 15 kt, becoming W after midnight. Gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 4 seconds and N 1 foot at 3 seconds. A chance of showers. .FRI THROUGH SAT NIGHT...W winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. 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. $$ ANZ281-110900- Ocean Waters from Provincetown to Nantucket from 20 to 60 NM- 405 PM EDT Mon Aug 10 2026 .TONIGHT...SW winds 5 to 10 kt, increasing to 10 to 15 kt after midnight. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 6 seconds and W 1 foot at 3 seconds. Patchy fog after midnight. A slight chance of showers after midnight with vsby 1 NM or less. .TUE...W winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 5 seconds and E 1 foot at 8 seconds. Patchy fog in the morning with vsby 1 NM or less. .TUE NIGHT...W winds 5 to 10 kt, becoming NW after midnight. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 6 seconds and NW 1 foot at 3 seconds. .WED...N winds around 5 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 6 seconds and N 1 foot at 3 seconds. .WED NIGHT AND THU...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 6 seconds and N 1 foot at 4 seconds. .THU NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. Wave Detail: W 3 ft at 5 seconds and SE 1 foot at 10 seconds. A chance of showers. .FRI...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. A chance of showers. .FRI NIGHT THROUGH SAT NIGHT...W winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 4 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ282-110900- Ocean Waters from Marthas Vineyard to Nantucket from 25 to 60 NM- 405 PM EDT Mon Aug 10 2026 .TONIGHT...SW winds 5 to 10 kt, increasing to 10 to 15 kt after midnight. Seas around 3 ft. Wave Detail: SW 3 ft at 5 seconds and NE 1 foot at 2 seconds. Patchy fog after midnight. A slight chance of showers after midnight with vsby 1 to 3 NM. .TUE...W winds 10 to 15 kt. Seas around 3 ft. Wave Detail: SW 3 ft at 5 seconds and E 1 foot at 8 seconds. .TUE NIGHT...W winds 10 to 15 kt, diminishing to 5 to 10 kt after midnight. Seas around 3 ft. Wave Detail: W 3 ft at 5 seconds and N 1 foot at 3 seconds. .WED...NW winds around 5 kt, becoming NE in the afternoon. Seas around 3 ft. Wave Detail: SW 2 ft at 6 seconds and N 1 foot at 4 seconds. .WED NIGHT...E winds around 5 kt, becoming SW after midnight. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 6 seconds and E 1 foot at 8 seconds. .THU...SW winds 5 to 10 kt, increasing to 10 to 15 kt in the afternoon. Seas 2 to 3 ft, building to 3 to 5 ft in the afternoon. Wave Detail: SW 3 ft at 6 seconds and NW 1 foot at 3 seconds, becoming SW 3 ft at 6 seconds and NW 1 foot at 4 seconds. A chance of showers in the afternoon. .THU NIGHT...SW winds 10 to 15 kt. Seas 3 to 4 ft. A chance of showers. .FRI...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. A chance of showers. .FRI NIGHT THROUGH SAT NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas 3 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. $$ ANZ283-110900- Ocean Waters from Montauk NY to Marthas Vineyard from 25 to 60 NM- 405 PM EDT Mon Aug 10 2026 .TONIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt after midnight. Seas around 3 ft. Wave Detail: SW 3 ft at 5 seconds and E 1 foot at 2 seconds. A chance of showers after midnight. .TUE...W winds 10 to 15 kt. Seas around 3 ft. Wave Detail: SW 3 ft at 5 seconds and SE 1 foot at 9 seconds. .TUE NIGHT...W winds 10 to 15 kt, becoming NW 5 to 10 kt after midnight. Seas around 3 ft. Wave Detail: W 3 ft at 5 seconds and N 1 foot at 3 seconds. .WED...N winds 5 to 10 kt, becoming NE in the afternoon. Seas around 3 ft. Wave Detail: SW 2 ft at 5 seconds and N 1 foot at 3 seconds. .WED NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 7 seconds and SE 1 foot at 2 seconds. .THU AND THU NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Wave Detail: SW 3 ft at 5 seconds and N 1 foot at 3 seconds. A chance of showers. .FRI...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. A chance of showers. .FRI NIGHT THROUGH SAT NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ 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