Hazardous Weather Conditions
Last Update: 405 PM EDT Sat Jul 18 2026
For More Weather Information:
29NM ENE Hyannis MA
Marine Zone Forecast
Tonight
SW winds 20 to 25 kt with gusts up to 30 kt. Seas 4 to 6 ft. Wave detail: SE 5 ft at 7 seconds and W 2 ft at 5 seconds. A chance of tstms. Showers likely this evening, then a chance of showers after midnight. Areas of smoke this evening. Vsby 1 nm or less.
Sun
W winds 15 to 20 kt, becoming NW 10 to 15 kt in the afternoon. Gusts up to 25 kt. Seas 3 to 5 ft. Wave detail: SW 5 ft at 6 seconds and NE 2 ft at 8 seconds.
Sun Night
SW winds 5 to 10 kt, becoming NW after midnight. Seas 2 to 4 ft. Wave detail: S 3 ft at 8 seconds and SW 1 foot at 4 seconds.
Mon
NW winds around 5 kt, becoming SW in the afternoon. Seas 2 to 3 ft. Wave detail: S 3 ft at 8 seconds and SW 1 foot at 4 seconds.
Mon Night
S winds 5 to 10 kt. Seas 2 to 3 ft. Wave detail: S 3 ft at 8 seconds and SW 1 foot at 3 seconds.
Tue
SE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave detail: SW 2 ft at 3 seconds and S 2 ft at 7 seconds. A chance of showers in the afternoon.
Tue Night
SE winds 15 to 20 kt, becoming S 20 to 25 kt after midnight. Gusts up to 30 kt. Seas 3 to 4 ft, building to 4 to 6 ft after midnight. Showers with a chance of tstms.
Wed
S winds 20 to 25 kt with gusts up to 35 kt. Seas 6 to 9 ft. Showers with a chance of tstms.
Wed Night
SW winds 25 to 30 kt with gusts up to 35 kt. Seas 6 to 9 ft. Showers likely.
Thu
SW winds 15 to 20 kt with gusts up to 25 kt. Seas 5 to 8 ft. Showers likely.
Thu Night
SW winds 5 to 10 kt. Seas 4 to 6 ft. A chance of showers.
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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