Coastal Waters Forecast
Issued by NWS Boston, MA
Issued by NWS Boston, MA
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605 FZUS51 KBOX 281703 CWFBOX Coastal Waters Forecast for Massachusetts and Rhode Island National Weather Service Boston/Norton MA 103 PM EDT Fri Aug 28 2026 Coastal waters from the Merrimack River MA to Watch Hill RI out to 60 NM ANZ200-290600- 103 PM EDT Fri Aug 28 2026 .Synopsis for Massachusetts and Rhode Island coastal waters... A cold front approaches the waters from the W late today. Frontal passage this evening leads to high pres this weekend. A backdoor cold front may approach the ern MA waters Mon morning, then should linger across some of the waters into mid week. $$ ANZ250-290600- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 103 PM EDT Fri Aug 28 2026 .THIS AFTERNOON...SE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 8 seconds and SW 1 foot at 2 seconds. Patchy fog. A slight chance of showers and tstms. Vsby 1 NM or less. .TONIGHT...SW winds 5 to 10 kt, becoming N 10 to 15 kt with gusts up to 20 kt after midnight. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 8 seconds and NW 2 ft at 3 seconds. Patchy fog in the evening with vsby 1 NM or less. .SAT...N winds 10 to 15 kt with gusts up to 20 kt, becoming NE 5 to 10 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: N 3 ft at 7 seconds. .SAT NIGHT...S winds 5 to 10 kt, becoming SW after midnight. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 7 seconds and W 1 foot at 3 seconds. .SUN...SW winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas around 2 ft. Wave Detail: SW 2 ft at 3 seconds and SE 2 ft at 7 seconds. .SUN NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 4 seconds and SE 2 ft at 8 seconds. .MON AND MON NIGHT...NE winds 5 to 10 kt, becoming S. Seas around 2 ft. .TUE...SE winds 5 to 10 kt. Seas around 2 ft. A chance of showers. .TUE NIGHT...SE winds 5 to 10 kt. Seas around 2 ft. A chance of showers. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-290600- Massachusetts Bay and Ipswich Bay- 103 PM EDT Fri Aug 28 2026 .THIS AFTERNOON...SE winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E 2 ft at 8 seconds and S 1 foot at 4 seconds. Patchy fog. A chance of showers with a slight chance of tstms. Vsby 1 to 3 NM. .TONIGHT...SW winds 5 to 10 kt, becoming N 10 to 15 kt after midnight. Seas around 2 ft. Wave Detail: NW 2 ft at 3 seconds and E 2 ft at 8 seconds. Patchy fog in the evening with vsby 1 to 3 NM. .SAT...N winds 5 to 10 kt, becoming E in the afternoon. Seas around 2 ft. Wave Detail: NE 2 ft at 8 seconds and N 2 ft at 11 seconds. .SAT NIGHT...S winds 5 to 10 kt, becoming SW after midnight. Seas around 2 ft. Wave Detail: E 2 ft at 6 seconds and S 1 foot at 2 seconds. .SUN AND SUN NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 3 seconds and E 2 ft at 7 seconds. .MON AND MON NIGHT...NE winds 5 to 10 kt, becoming S. Seas 1 foot or less. Wave Detail: NW 1 foot at 3 seconds and E 1 foot at 8 seconds. .TUE AND TUE NIGHT...SE winds 5 to 10 kt. Seas 1 foot or less, then around 2 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. $$ ANZ231-290600- Cape Cod Bay- 103 PM EDT Fri Aug 28 2026 .THIS AFTERNOON...SE winds 5 to 10 kt. Seas around 2 ft. Wave Detail: S 1 foot at 2 seconds and E 1 foot at 10 seconds. A slight chance of showers and tstms. .TONIGHT...SW winds around 5 kt, becoming N 10 to 15 kt with gusts up to 20 kt after midnight. Seas 1 foot or less, then around 2 ft after midnight. Wave Detail: SW 1 foot at 2 seconds and E 1 foot at 11 seconds, becoming NW 1 foot at 3 seconds and E 1 foot at 10 seconds. .SAT...N winds 10 to 15 kt with gusts up to 20 kt, becoming NE 5 to 10 kt in the afternoon. Seas around 2 ft. Wave Detail: N 2 ft at 5 seconds. .SAT NIGHT...S winds around 5 kt, becoming SW after midnight. Seas around 2 ft in the evening, then 1 foot or less. Wave Detail: N 2 ft at 5 seconds, becoming W 1 foot at 4 seconds and NE 1 foot at 5 seconds. .SUN AND SUN NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: W 1 foot at 3 seconds and NE 1 foot at 5 seconds. .MON AND MON NIGHT...N winds 5 to 10 kt, becoming SE. Seas 1 foot or less. Wave Detail: NW 1 foot at 2 seconds and E 1 foot at 9 seconds. .TUE AND TUE NIGHT...SE winds 5 to 10 kt. Seas 1 foot or less. A chance of showers. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-290600- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 NM- 103 PM EDT Fri Aug 28 2026 .THIS AFTERNOON...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 7 seconds. Patchy fog. Vsby 1 to 3 NM. .TONIGHT...SW winds 5 to 10 kt, becoming NW 10 to 15 kt with gusts up to 20 kt after midnight. Seas 2 to 3 ft. Wave Detail: S 3 ft at 7 seconds. Patchy fog. Vsby 1 to 3 NM, decreasing to 1 NM or less after midnight. .SAT...N winds 10 to 15 kt, becoming NE 5 to 10 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: E 3 ft at 7 seconds and NW 2 ft at 5 seconds. .SAT NIGHT...SE winds around 5 kt, becoming SW after midnight. Seas 2 to 3 ft. Wave Detail: E 3 ft at 6 seconds and SW 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: SW 2 ft at 4 seconds and SE 2 ft at 7 seconds. .SUN NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: W 3 ft at 4 seconds and SE 2 ft at 8 seconds. A chance of showers after midnight. .MON...N winds 5 to 10 kt. Seas around 2 ft. A chance of showers. .MON NIGHT...SE winds around 5 kt. Seas around 2 ft. .TUE AND TUE NIGHT...SE 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. $$ ANZ255-290600- Coastal Waters extending out to 25 NM South of Marthas Vineyard and Nantucket- 103 PM EDT Fri Aug 28 2026 .THIS AFTERNOON...SW winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: S 3 ft at 7 seconds. Patchy fog. Vsby 1 NM or less. .TONIGHT...SW winds 5 to 10 kt, becoming NW 10 to 15 kt after midnight. Seas 2 to 3 ft. Wave Detail: S 3 ft at 7 seconds. Patchy fog. Vsby 1 to 3 NM. .SAT...NE winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 7 seconds and NW 2 ft at 5 seconds. .SAT NIGHT...SE winds around 5 kt, becoming SW after midnight. Seas 2 to 3 ft. Wave Detail: S 2 ft at 7 seconds. .SUN...W winds 5 to 10 kt, becoming SW 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas around 2 ft. Wave Detail: W 2 ft at 4 seconds and SE 2 ft at 7 seconds. .SUN NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 4 seconds and SE 2 ft at 8 seconds. A chance of showers after midnight. .MON...N winds 10 to 15 kt. Seas around 2 ft. A chance of showers. .MON NIGHT AND TUE...SE winds 5 to 10 kt. Seas around 2 ft. .TUE NIGHT...SE winds around 10 kt. Seas around 2 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-290600- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 NM South of Block Island- 103 PM EDT Fri Aug 28 2026 .THIS AFTERNOON...SW winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: S 3 ft at 7 seconds. Patchy fog. Vsby 1 NM or less. .TONIGHT...SW winds 5 to 10 kt, becoming NW 10 to 15 kt after midnight. Seas around 3 ft. Wave Detail: S 3 ft at 7 seconds. Patchy fog. Vsby 1 to 3 NM. .SAT...N winds 10 to 15 kt, becoming NE 5 to 10 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: N 3 ft at 6 seconds. .SAT NIGHT...SW winds around 5 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft at 7 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: 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. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 4 seconds and SE 2 ft at 8 seconds. A chance of showers after midnight. .MON AND MON NIGHT...NW winds 10 to 15 kt, becoming SE 5 to 10 kt. Seas 2 to 3 ft. .TUE...SE winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers. .TUE NIGHT...SE 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. $$ ANZ232-290600- Nantucket Sound- 103 PM EDT Fri Aug 28 2026 .THIS AFTERNOON...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 5 seconds and SE 1 foot at 8 seconds. .TONIGHT...SW winds 5 to 10 kt, becoming NW 10 to 15 kt with gusts up to 20 kt after midnight. Seas around 2 ft. Wave Detail: W 2 ft at 4 seconds and SE 1 foot at 8 seconds. Patchy fog. Vsby 1 to 3 NM. .SAT...N winds 10 to 15 kt with gusts up to 20 kt, becoming NE 5 to 10 kt in the afternoon. Seas around 2 ft. Wave Detail: W 2 ft at 6 seconds and NE 2 ft at 7 seconds. .SAT NIGHT...SE winds around 5 kt, becoming SW after midnight. Seas around 2 ft. Wave Detail: SW 1 foot at 6 seconds and E 1 foot at 7 seconds. .SUN AND SUN NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 3 seconds and E 1 foot at 7 seconds. .MON AND MON NIGHT...N winds 10 to 15 kt, becoming SE 5 to 10 kt. Seas around 2 ft. Wave Detail: W 2 ft at 4 seconds and SE 1 foot at 8 seconds. .TUE AND TUE NIGHT...SE winds 5 to 10 kt. Seas around 2 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-290600- Vineyard Sound- 103 PM EDT Fri Aug 28 2026 .THIS AFTERNOON...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: S 2 ft at 7 seconds. Patchy fog. A slight chance of showers and tstms. Vsby 1 NM or less. .TONIGHT...SW winds 5 to 10 kt, becoming NW 10 to 15 kt after midnight. Seas around 2 ft. Wave Detail: SW 2 ft at 6 seconds and SE 2 ft at 8 seconds. Patchy fog. Vsby 1 to 3 NM. .SAT...N winds 10 to 15 kt, becoming NE 5 to 10 kt in the afternoon. Seas around 2 ft. Wave Detail: NE 2 ft at 4 seconds and W 2 ft at 6 seconds. .SAT NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E 1 foot at 5 seconds and S 1 foot at 6 seconds. .SUN AND 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 1 foot at 8 seconds. .MON AND MON NIGHT...N winds 5 to 10 kt, becoming SE. Seas around 2 ft. Wave Detail: SW 2 ft at 5 seconds and SE 1 foot at 9 seconds. .TUE...SE winds 5 to 10 kt. Seas around 2 ft. A chance of showers. .TUE NIGHT...SE winds around 10 kt. Seas around 2 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. $$ ANZ234-290600- Buzzards Bay- 103 PM EDT Fri Aug 28 2026 .THIS AFTERNOON...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 8 seconds and SW 1 foot at 5 seconds. Patchy fog. A slight chance of showers and tstms. Vsby 1 NM or less. .TONIGHT...SW winds 5 to 10 kt, becoming N 10 to 15 kt after midnight. Seas around 2 ft. Wave Detail: SE 2 ft at 9 seconds and SW 1 foot at 5 seconds. Patchy fog. Vsby 1 to 3 NM. .SAT...N winds 10 to 15 kt, becoming E around 5 kt in the afternoon. Seas around 2 ft. Wave Detail: N 1 foot at 2 seconds and W 1 foot at 6 seconds. .SAT NIGHT...S winds 5 to 10 kt, becoming SW after midnight. Seas around 2 ft in the evening, then 1 foot or less. Wave Detail: E 1 foot at 3 seconds and S 1 foot at 5 seconds, becoming SW 1 foot at 4 seconds and SE 1 foot at 7 seconds. .SUN AND SUN NIGHT...W winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: SW 2 ft at 4 seconds and SE 1 foot at 7 seconds. .MON AND MON NIGHT...N winds 5 to 10 kt, becoming SE. Seas around 2 ft, then 1 foot or less. Wave Detail: W 2 ft at 5 seconds and SE 1 foot at 9 seconds, becoming SE 1 foot at 4 seconds and SE 1 foot at 7 seconds. .TUE...SE winds 5 to 10 kt. Seas around 2 ft. A chance of showers. .TUE NIGHT...SE winds around 10 kt. Seas around 2 ft. A chance of showers. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-290600- Rhode Island Sound- 103 PM EDT Fri Aug 28 2026 .THIS AFTERNOON...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 8 seconds. Patchy fog. A slight chance of showers and tstms. Vsby 1 NM or less. .TONIGHT...W winds 5 to 10 kt, becoming N 10 to 15 kt after midnight. Seas 2 to 3 ft. Wave Detail: S 3 ft at 7 seconds. Patchy fog. Vsby 1 to 3 NM. .SAT...N winds 10 to 15 kt, becoming E 5 to 10 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: NE 3 ft at 7 seconds and W 2 ft at 6 seconds. .SAT NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: S 2 ft at 7 seconds. .SUN AND 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. .MON AND MON NIGHT...N winds 5 to 10 kt, becoming SE. Seas around 2 ft. Wave Detail: SW 2 ft at 5 seconds and SE 1 foot at 8 seconds. .TUE...SE winds 5 to 10 kt. Seas around 2 ft. A chance of showers. .TUE NIGHT...SE winds 10 to 15 kt. Seas around 2 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. $$ ANZ237-290600- Block Island Sound- 103 PM EDT Fri Aug 28 2026 .THIS AFTERNOON...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 7 seconds. Patchy fog. A slight chance of showers and tstms. Vsby 1 NM or less. .TONIGHT...W winds 5 to 10 kt, becoming N after midnight. Seas 2 to 3 ft. Wave Detail: S 3 ft at 7 seconds. Patchy fog in the evening with vsby 1 to 3 NM. .SAT...N winds 5 to 10 kt, becoming SE in the afternoon. Seas 2 to 3 ft. Wave Detail: NE 3 ft at 7 seconds and W 1 foot at 5 seconds. .SAT NIGHT...SW winds around 5 kt. Seas around 2 ft. Wave Detail: S 2 ft at 7 seconds. .SUN AND SUN NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 3 seconds and SE 2 ft at 8 seconds. .MON AND MON NIGHT...W winds 5 to 10 kt, becoming SE. Seas around 2 ft. Wave Detail: W 2 ft at 5 seconds and SE 1 foot at 8 seconds. .TUE...S winds 5 to 10 kt. Seas around 2 ft. A chance of showers. .TUE NIGHT...SE winds around 10 kt. Seas around 2 ft. A chance of showers. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-290600- Boston Harbor- 103 PM EDT Fri Aug 28 2026 .THIS AFTERNOON...SE winds 5 to 10 kt. Waves 1 foot or less. A chance of showers and tstms. .TONIGHT...SW winds 5 to 10 kt, becoming NW after midnight. Waves 1 foot or less. .SAT...N winds 5 to 10 kt, becoming E in the afternoon. Waves 1 foot or less. .SAT NIGHT...S winds 5 to 10 kt, becoming SW after midnight. Waves 1 foot or less. .SUN AND SUN NIGHT...W winds 5 to 10 kt. Waves around 2 ft. .MON AND MON NIGHT...NE winds 5 to 10 kt, becoming SE. Waves 1 foot or less. .TUE AND TUE NIGHT...SE winds 5 to 10 kt. Waves 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. $$ ANZ236-290600- Narragansett Bay- 103 PM EDT Fri Aug 28 2026 .THIS AFTERNOON...S winds 5 to 10 kt. Waves around 2 ft. Patchy fog. A slight chance of showers and tstms. Vsby 1 to 3 NM. .TONIGHT...W winds 5 to 10 kt, becoming N after midnight. Waves around 2 ft. Patchy fog in the evening. .SAT...N winds 5 to 10 kt, becoming SE in the afternoon. Waves around 2 ft. .SAT NIGHT...SW winds 5 to 10 kt. Waves around 2 ft. .SUN AND SUN NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to 3 ft. .MON AND MON NIGHT...N winds 5 to 10 kt, becoming S. Waves around 2 ft, then 1 foot or less. .TUE...SE winds 5 to 10 kt. Waves around 2 ft. A chance of showers. .TUE NIGHT...SE winds 5 to 10 kt. Waves around 2 ft. A chance of showers. Winds and waves higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ280-290600- Ocean Waters from the Merrimack River to Plymouth from 40 to 60 NM- 103 PM EDT Fri Aug 28 2026 .THIS AFTERNOON...S winds 5 to 10 kt. Seas around 3 ft. Wave Detail: SE 3 ft at 8 seconds and SW 1 foot at 3 seconds. Patchy fog. Vsby 1 NM or less. .TONIGHT...SW winds 5 to 10 kt, becoming N 10 to 15 kt with gusts up to 20 kt after midnight. Seas around 3 ft. Wave Detail: SE 3 ft at 8 seconds and SW 2 ft at 5 seconds. Patchy fog. Vsby 1 NM or less. .SAT...N winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt in the afternoon. Seas 3 to 4 ft. Wave Detail: N 4 ft at 6 seconds. .SAT NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S 3 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: W 2 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. Gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 4 seconds and SE 2 ft at 8 seconds. .MON AND MON NIGHT...N winds 10 to 15 kt with gusts up to 20 kt, becoming S 5 to 10 kt. Seas 2 to 3 ft. .TUE AND TUE NIGHT...SE winds 5 to 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. $$ ANZ281-290600- Ocean Waters from Provincetown to Nantucket from 20 to 60 NM- 103 PM EDT Fri Aug 28 2026 .THIS AFTERNOON...SW winds around 5 kt. Seas 3 to 4 ft. Wave Detail: S 3 ft at 7 seconds and SE 3 ft at 8 seconds. Patchy fog. Vsby 1 NM or less. .TONIGHT...SW winds 5 to 10 kt, becoming W 10 to 15 kt with gusts up to 20 kt after midnight. Seas 3 to 4 ft. Wave Detail: S 4 ft at 7 seconds. Patchy fog. Vsby 1 NM or less. .SAT...N winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt in the afternoon. Seas 3 to 4 ft. Wave Detail: NE 4 ft at 7 seconds and SW 3 ft at 6 seconds. .SAT NIGHT...N winds around 5 kt, becoming W after midnight. Seas 2 to 3 ft. Wave Detail: NE 3 ft at 6 seconds and S 2 ft at 6 seconds. .SUN...W winds 5 to 10 kt, becoming SW 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: S 2 ft at 6 seconds. .SUN NIGHT...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 4 seconds and SE 2 ft at 8 seconds. A chance of showers after midnight. .MON...N winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of showers. .MON NIGHT AND TUE...E winds 5 to 10 kt. Seas 2 to 3 ft. .TUE NIGHT...SE winds around 10 kt. Seas 2 to 3 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ282-290600- Ocean Waters from Marthas Vineyard to Nantucket from 25 to 60 NM- 103 PM EDT Fri Aug 28 2026 .THIS AFTERNOON...SW winds around 5 kt. Seas around 4 ft. Wave Detail: S 3 ft at 7 seconds. A slight chance of showers. .TONIGHT...W winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: S 3 ft at 7 seconds. Patchy fog. Vsby 1 to 3 NM. .SAT...N winds 10 to 15 kt, becoming NE 5 to 10 kt in the afternoon. Seas around 3 ft. Wave Detail: SW 3 ft at 6 seconds and SE 3 ft at 8 seconds. .SAT NIGHT...NE winds around 5 kt, becoming NW after midnight. Seas 2 to 3 ft. Wave Detail: SE 2 ft at 7 seconds. .SUN...W winds around 5 kt, increasing to 5 to 10 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 6 seconds and E 2 ft at 7 seconds. .SUN NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 5 seconds and SE 2 ft at 7 seconds. A chance of showers after midnight. .MON...NW winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers. .MON NIGHT AND TUE...E winds 5 to 10 kt. Seas 2 to 3 ft. .TUE NIGHT...SE 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. $$ ANZ283-290600- Ocean Waters from Montauk NY to Marthas Vineyard from 25 to 60 NM- 103 PM EDT Fri Aug 28 2026 .THIS AFTERNOON...W winds around 5 kt. Seas 3 to 4 ft. Wave Detail: S 3 ft at 7 seconds. Patchy fog. Vsby 1 NM or less. .TONIGHT...W winds 5 to 10 kt, becoming NW 10 to 15 kt after midnight. Seas 3 to 4 ft. Wave Detail: S 3 ft at 7 seconds. .SAT...NE winds 10 to 15 kt, diminishing to 5 to 10 kt in the afternoon. Seas around 3 ft. Wave Detail: NW 3 ft at 6 seconds and NE 3 ft at 7 seconds. .SAT NIGHT...NE winds around 5 kt, becoming W after midnight. Seas 2 to 3 ft. Wave Detail: SE 2 ft at 7 seconds. .SUN...W winds 5 to 10 kt. Seas around 2 ft. Wave Detail: S 2 ft at 7 seconds. .SUN NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 5 seconds and SE 2 ft at 8 seconds. A chance of showers after midnight. .MON...NW winds 10 to 15 kt. Seas around 3 ft. A chance of showers. .MON NIGHT AND TUE...SE winds 5 to 10 kt. Seas 2 to 3 ft. .TUE NIGHT...SE winds 10 to 15 kt. Seas around 3 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ 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