Coastal Waters Forecast
Issued by NWS Boston, MA

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962 FZUS51 KBOX 162305 CWFBOX Coastal Waters Forecast for Massachusetts and Rhode Island National Weather Service Boston/Norton MA 705 PM EDT Sun Jun 16 2024 Coastal waters from the Merrimack River MA to Watch Hill RI out to 25 NM ANZ200-171200- 705 PM EDT Sun Jun 16 2024 .Synopsis for Massachusetts and Rhode Island coastal waters... Tranquil boating conditions continue this evening as high pressure remains overhead. Winds begin to increase out of the south on Monday with gusts up to 20-25 knots. High pressure remains to the east much of the week with SSW winds. $$ ANZ250-171200- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 705 PM EDT Sun Jun 16 2024 .TONIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 2 ft at 8 seconds and S 1 foot at 3 seconds. .MON...S winds 10 to 15 kt, increasing to 15 to 20 kt with gusts up to 25 kt in the afternoon. Seas 2 to 4 ft. Wave Detail: SW 3 ft at 4 seconds and SE 2 ft at 8 seconds. .MON NIGHT...S winds 15 to 20 kt, becoming SW 10 to 15 kt after midnight. Gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: SW 3 ft at 4 seconds and E 2 ft at 12 seconds. .TUE...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 4 seconds and SE 2 ft at 12 seconds. .TUE NIGHT THROUGH WED NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Wave Detail: S 3 ft at 4 seconds and SW 2 ft at 3 seconds. .THU THROUGH FRI...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 4 seconds and SE 2 ft at 10 seconds. .FRI NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-171200- Massachusetts Bay and Ipswich Bay- 705 PM EDT Sun Jun 16 2024 .TONIGHT...S winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E 2 ft at 8 seconds and SE 1 foot at 3 seconds. .MON...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 SE 2 ft at 8 seconds. .MON NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 4 seconds and SW 1 foot at 3 seconds. .TUE...SW winds 5 to 10 kt, becoming S 10 to 15 kt in the afternoon. Seas around 2 ft. Wave Detail: SW 2 ft at 4 seconds and SE 1 foot at 7 seconds. .TUE NIGHT THROUGH WED NIGHT...SW 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 SW 1 foot at 3 seconds. .THU THROUGH FRI...SW winds 10 to 15 kt. Seas around 2 ft. Wave Detail: S 1 foot at 3 seconds and SW 1 foot at 3 seconds. .FRI NIGHT...NE winds 5 to 10 kt. Seas 1 foot or less. 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. $$ ANZ231-171200- Cape Cod Bay- 705 PM EDT Sun Jun 16 2024 .TONIGHT...S winds around 5 kt. Seas 1 foot or less. Wave Detail: S 1 foot at 2 seconds and N 1 foot at 5 seconds. .MON...S winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 1 foot or less, then around 2 ft in the afternoon. Wave Detail: SW 1 foot at 3 seconds and N 1 foot at 4 seconds, becoming SW 1 foot at 3 seconds and NE 1 foot at 4 seconds. .MON NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 3 seconds and SE 1 foot at 7 seconds. .TUE...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 3 seconds and S 1 foot at 7 seconds. .TUE NIGHT THROUGH WED NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: S 2 ft at 3 seconds and SW 1 foot at 3 seconds. .THU THROUGH FRI...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 4 seconds and SE 1 foot at 9 seconds. .FRI NIGHT...SW winds 5 to 10 kt. Seas 1 foot or less. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-171200- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm- 705 PM EDT Sun Jun 16 2024 .TONIGHT...S winds around 5 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 8 seconds and N 2 ft at 5 seconds. .MON...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 SE 2 ft at 8 seconds. .MON 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 12 seconds. .TUE...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 12 seconds. .TUE NIGHT THROUGH WED NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Wave Detail: S 3 ft at 4 seconds and W 2 ft at 4 seconds. .THU THROUGH FRI...SW 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 SE 2 ft at 9 seconds. .FRI 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. $$ ANZ255-171200- Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket- 705 PM EDT Sun Jun 16 2024 .TONIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 7 seconds and NE 1 foot at 4 seconds. .MON...S winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas around 2 ft. Wave Detail: S 2 ft at 4 seconds and SE 2 ft at 7 seconds. .MON NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 4 seconds and S 2 ft at 7 seconds. .TUE...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 6 seconds and SE 2 ft at 12 seconds. .TUE NIGHT THROUGH WED NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 4 seconds and SW 3 ft at 5 seconds. .THU THROUGH FRI...SW winds 15 to 20 kt. Seas 2 to 4 ft. Wave Detail: SW 4 ft at 5 seconds and SE 2 ft at 9 seconds. .FRI NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-171200- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island- 705 PM EDT Sun Jun 16 2024 .TONIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 8 seconds and S 1 foot at 7 seconds. .MON...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 4 seconds and SE 2 ft at 8 seconds. .MON NIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 4 seconds and S 2 ft at 7 seconds. .TUE...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 3 ft. Wave Detail: SW 3 ft at 5 seconds and SE 2 ft at 12 seconds. .TUE NIGHT THROUGH WED 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 SW 2 ft at 4 seconds. .THU THROUGH FRI NIGHT...SW winds 15 to 20 kt. Seas 2 to 4 ft. Wave Detail: SW 3 ft at 4 seconds and SE 3 ft at 8 seconds. 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. $$ ANZ232-171200- Nantucket Sound- 705 PM EDT Sun Jun 16 2024 .TONIGHT...S winds 5 to 10 kt. Seas around 2 ft this evening, then 1 foot or less. Wave Detail: S 1 foot at 2 seconds and NE 1 foot at 3 seconds, becoming S 1 foot at 3 seconds and E 1 foot at 6 seconds. .MON...S winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 1 foot or less, then around 2 ft in the afternoon. Wave Detail: S 1 foot at 3 seconds and NE 1 foot at 4 seconds, becoming SW 2 ft at 3 seconds and NE 1 foot at 4 seconds. .MON NIGHT...SW winds around 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 4 seconds and N 1 foot at 4 seconds. .TUE...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 4 seconds and S 1 foot at 7 seconds. .TUE NIGHT THROUGH WED NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 3 seconds and S 2 ft at 4 seconds. .THU THROUGH FRI...SW winds 15 to 20 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 4 seconds and SE 1 foot at 9 seconds. .FRI NIGHT...SW winds 10 to 15 kt. Seas around 2 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-171200- Vineyard Sound- 705 PM EDT Sun Jun 16 2024 .TONIGHT...S winds 5 to 10 kt. Seas around 2 ft this evening, then 1 foot or less. Wave Detail: S 2 ft at 8 seconds and S 1 foot at 3 seconds, becoming NE 1 foot at 4 seconds and S 1 foot at 4 seconds. .MON...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 around 2 ft in the afternoon. Wave Detail: S 1 foot at 4 seconds and SE 1 foot at 7 seconds, becoming S 2 ft at 3 seconds and SE 1 foot at 7 seconds. .MON NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 4 seconds and S 1 foot at 7 seconds. .TUE...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 5 seconds and SE 1 foot at 12 seconds. .TUE NIGHT THROUGH WED NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 4 seconds and SW 2 ft at 5 seconds. .THU THROUGH FRI...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 S 1 foot at 9 seconds. .FRI NIGHT...SW winds 10 to 15 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. $$ ANZ234-171200- Buzzards Bay- 705 PM EDT Sun Jun 16 2024 .TONIGHT...S winds 5 to 10 kt. Seas 1 foot or less. Wave Detail: S 1 foot at 2 seconds and NE 1 foot at 3 seconds. .MON...S winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 1 foot or less, then around 2 ft in the afternoon. Wave Detail: NE 1 foot at 4 seconds and S 1 foot at 4 seconds, becoming SW 2 ft at 3 seconds and NE 1 foot at 4 seconds. .MON NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 4 seconds and SE 1 foot at 7 seconds. .TUE...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: S 2 ft at 6 seconds and SW 1 foot at 3 seconds. .TUE NIGHT THROUGH WED NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 4 seconds and SW 2 ft at 5 seconds. .THU THROUGH FRI...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 4 seconds and SE 1 foot at 9 seconds. .FRI NIGHT...SW winds 10 to 15 kt. Seas around 2 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-171200- Rhode Island Sound- 705 PM EDT Sun Jun 16 2024 .TONIGHT...S winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 8 seconds and SE 1 foot at 2 seconds. .MON...S 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 4 seconds and SE 2 ft at 7 seconds. .MON 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 7 seconds. .TUE...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 1 foot at 12 seconds. .TUE NIGHT THROUGH WED 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 SW 2 ft at 4 seconds. .THU THROUGH FRI...SW winds 15 to 20 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 4 seconds and S 3 ft at 8 seconds. .FRI 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. $$ ANZ237-171200- Block Island Sound- 705 PM EDT Sun Jun 16 2024 .TONIGHT...S winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 8 seconds and S 1 foot at 4 seconds. .MON...S winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas around 2 ft. Wave Detail: S 2 ft at 4 seconds and SE 2 ft at 8 seconds. .MON NIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas around 2 ft. Wave Detail: SW 2 ft at 4 seconds and SE 2 ft at 7 seconds. .TUE...SW winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Seas around 2 ft. Wave Detail: S 2 ft at 6 seconds and SE 2 ft at 12 seconds. .TUE NIGHT THROUGH WED NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: S 2 ft at 5 seconds and SE 2 ft at 10 seconds. .THU THROUGH FRI NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 8 seconds and SW 2 ft at 4 seconds. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-171200- Boston Harbor- 705 PM EDT Sun Jun 16 2024 .TONIGHT...S winds around 10 kt, becoming SW after midnight. Waves 1 foot or less. .MON...S winds 5 to 10 kt, increasing to 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. .MON NIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt in the evening. Waves around 2 ft. .TUE...SW winds 5 to 10 kt. Waves around 2 ft in the morning, then 1 foot or less. .TUE NIGHT THROUGH WED NIGHT...SW winds 10 to 15 kt. Waves around 2 ft. .THU AND THU NIGHT...SW winds 5 to 10 kt. Waves 1 foot or less. .FRI AND FRI NIGHT...SW winds 5 to 10 kt, becoming SE. Waves 1 foot or less. 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. $$ ANZ236-171200- Narragansett Bay- 705 PM EDT Sun Jun 16 2024 .TONIGHT...S winds 5 to 10 kt. Waves around 2 ft. .MON...S winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt in the afternoon. Waves around 2 ft. .MON NIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt in the evening. Waves around 2 ft. .TUE...SW winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Waves around 2 ft. .TUE NIGHT THROUGH WED NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft. .THU THROUGH FRI...SW winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to 3 ft. .FRI NIGHT...SW winds 5 to 10 kt. Waves around 2 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ For the latest updates...please visit our webpage at www.weather.gov/boston You can follow us on Facebook at www.facebook.com/NWSBoston You can follow us on Twitter at @NWSBoston