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Last Update: 404 AM EDT Tue Aug 19 2025
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8NM S Hyannis MA
Marine Zone Forecast
Today
NE winds around 10 kt. Seas 2 to 3 ft. Wave detail: NE 2 ft at 4 seconds and S 1 foot at 14 seconds.
Tonight
E winds 5 to 10 kt. Seas 2 to 3 ft. Wave detail: E 2 ft at 5 seconds and S 2 ft at 16 seconds.
Wed
E winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Seas 2 to 4 ft. Wave detail: E 2 ft at 5 seconds and S 2 ft at 15 seconds. A chance of showers in the afternoon.
Wed Night
E winds 15 to 20 kt. Seas 2 to 4 ft. Wave detail: E 3 ft at 4 seconds and S 3 ft at 16 seconds. A chance of showers.
Thu
E winds 15 to 20 kt, becoming NE 20 to 25 kt in the afternoon. Gusts up to 30 kt. Seas 4 to 6 ft. Wave detail: E 4 ft at 4 seconds and S 3 ft at 17 seconds.
Thu Night
NE winds 25 to 30 kt with gusts up to 35 kt. Seas 5 to 8 ft. Wave detail: NE 6 ft at 6 seconds and S 3 ft at 17 seconds.
Fri
NE winds 25 to 30 kt with gusts up to 35 kt. Seas 5 to 8 ft.
Fri Night And Sat
N winds 20 to 25 kt, becoming W. Gusts up to 35 kt. Seas 4 to 6 ft.
Sat Night
S winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 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.
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.
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.
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