Last Update: 704 AM EDT Mon Aug 31 2026
For More Weather Information:
20NM W Hyannis MA
Marine Zone Forecast
Today
N winds 5 to 10 kt, becoming E this afternoon. Seas around 2 ft this morning, then 1 foot or less. Wave detail: W 1 foot at 5 seconds and N 1 foot at 8 seconds, becoming NE 1 foot at 2 seconds and SW 1 foot at 5 seconds.
Tonight
S winds 5 to 10 kt. Seas 1 foot or less. Wave detail: SE 1 foot at 2 seconds and S 1 foot at 5 seconds. Patchy fog after midnight. A chance of showers after midnight.
Tue
SE 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 SE 1 foot at 8 seconds. Patchy fog. A chance of showers in the morning. Showers likely in the afternoon.
Tue Night
E winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas around 2 ft. Wave detail: SE 1 foot at 4 seconds and SE 1 foot at 8 seconds. A chance of showers.
Wed
E winds 10 to 15 kt. Seas around 2 ft. Wave detail: SE 1 foot at 4 seconds and SE 1 foot at 17 seconds.
Wed Night
SE winds around 10 kt. Seas around 2 ft. Wave detail: SE 1 foot at 3 seconds and SE 1 foot at 12 seconds. A chance of showers in the evening, then showers with a chance of tstms after midnight.
Thu
SW winds around 10 kt. Seas around 2 ft. Showers with a chance of tstms.
Thu Night
W winds 5 to 10 kt. Seas around 2 ft. A chance of showers and tstms.
Fri And Fri Night
NW winds 5 to 10 kt, becoming N 10 to 15 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.
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.
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.
Additional Forecasts and Information
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