Last Update: 404 PM EDT Mon Jun 30 2025
For More Weather Information:
20NM W Hyannis MA
Marine Zone Forecast
Tonight
S winds 5 to 10 kt. Seas 1 foot or less, then around 2 ft after midnight. Wave detail: S 1 foot at 3 seconds and SE 1 foot at 7 seconds, becoming SW 1 foot at 3 seconds and SE 1 foot at 8 seconds. Patchy fog. Scattered showers with isolated tstms after midnight. Vsby 1 nm or less.
Tue
SW winds 10 to 15 kt with gusts up to 20 kt, increasing to 15 to 20 kt with gusts up to 30 kt in the afternoon. Seas 2 to 4 ft. Wave detail: SW 3 ft at 5 seconds and SE 1 foot at 8 seconds. Patchy fog in the morning. Scattered showers in the morning with vsby 1 nm or less.
Tue Night
SW winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Gusts up to 25 kt. Seas 2 to 4 ft. Wave detail: SW 4 ft at 5 seconds and SE 1 foot at 8 seconds. Patchy fog. Showers likely, mainly in the evening. Vsby 1 nm or less.
Wed
SW winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Seas around 2 ft. Wave detail: SW 2 ft at 7 seconds and SE 1 foot at 9 seconds. Patchy fog in the morning. A chance of showers in the morning with vsby 1 to 3 nm.
Wed Night And Thu
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 1 foot at 8 seconds.
Thu Night
W winds 10 to 15 kt with gusts up to 20 kt, becoming NW after midnight. Seas around 2 ft. Wave detail: SW 2 ft at 4 seconds and SE 1 foot at 8 seconds.
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.
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.
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