Last Update: 1005 AM EDT Sun Jul 13 2025
For More Weather Information:
20NM W Hyannis MA
Marine Zone Forecast
This Afternoon
E winds 5 to 10 kt. Seas around 2 ft. Wave detail: E 1 foot at 3 seconds and S 1 foot at 7 seconds.
Tonight
E winds 5 to 10 kt. Seas around 2 ft in the evening, then 1 foot or less. Wave detail: SE 1 foot at 5 seconds, becoming E 1 foot at 4 seconds and S 1 foot at 7 seconds. Patchy fog. Vsby 1 to 3 nm, decreasing to 1 nm or less after midnight.
Mon
E winds around 5 kt, becoming S in the afternoon. Seas 1 foot or less, then around 2 ft in the afternoon. Wave detail: SE 1 foot at 4 seconds and S 1 foot at 7 seconds, becoming SW 1 foot at 3 seconds and SE 1 foot at 6 seconds. Patchy fog in the morning with vsby 1 to 3 nm.
Mon Night
SW winds 5 to 10 kt. Seas around 2 ft in the evening, then 1 foot or less. Wave detail: SW 1 foot at 3 seconds and SE 1 foot at 6 seconds.
Tue And Tue Night
SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave detail: SW 1 foot at 3 seconds and SE 1 foot at 6 seconds.
Wed And Wed Night
SW winds 10 to 15 kt. Gusts up to 20 kt. Seas around 2 ft. Wave detail: SW 2 ft at 3 seconds and SE 2 ft at 6 seconds.
Thu And Thu Night
SW winds 15 to 20 kt, diminishing to 10 to 15 kt. Gusts up to 25 kt. Seas 2 to 4 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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