Hazardous Weather Conditions
Last Update: 705 PM EST Mon Dec 15 2025
For More Weather Information:
11NM SW Nantucket MA
Marine Zone Forecast
Tonight
NW winds 20 to 25 kt, becoming W 15 to 20 kt after midnight. Seas 5 to 8 ft, subsiding to 3 to 5 ft after midnight. Wave detail: W 6 ft at 6 seconds and NE 2 ft at 8 seconds, becoming W 5 ft at 6 seconds and NE 1 foot at 8 seconds.
Tue
W winds 10 to 15 kt. Gusts up to 20 kt in the morning. Seas 2 to 4 ft. Wave detail: W 4 ft at 6 seconds and NE 1 foot at 8 seconds.
Tue Night
SW winds 15 to 20 kt, increasing to 20 to 25 kt after midnight. Seas 2 to 4 ft, building to 4 to 6 ft after midnight. Wave detail: SW 4 ft at 6 seconds and SE 1 foot at 11 seconds, becoming SW 6 ft at 6 seconds and SE 1 foot at 10 seconds.
Wed
SW winds 20 to 25 kt with gusts up to 30 kt. Seas 6 to 9 ft. Wave detail: SW 9 ft at 8 seconds and S 4 ft at 10 seconds.
Wed Night
W winds 20 to 25 kt with gusts up to 30 kt, becoming NW 15 to 20 kt after midnight. Seas 6 to 9 ft, subsiding to 5 to 7 ft after midnight. Wave detail: SW 9 ft at 9 seconds, becoming SW 7 ft at 9 seconds and W 5 ft at 6 seconds.
Thu
SW winds 5 to 10 kt, becoming S 15 to 20 kt in the afternoon. Seas 4 to 6 ft. Wave detail: SW 5 ft at 8 seconds and S 5 ft at 10 seconds.
Thu Night
S winds 25 to 30 kt, increasing to 30 to 40 kt after midnight. Seas 5 to 7 ft, building to 9 to 12 ft after midnight. A chance of rain after midnight.
Fri
SW winds 30 to 40 kt with gusts up to 45 kt. Seas 10 to 14 ft. Rain. Vsby 1 to 3 nm.
Fri Night
W winds 35 to 45 kt. Seas 8 to 11 ft. A chance of rain.
Sat
W winds 20 to 25 kt. Seas 5 to 7 ft.
Sat Night
SW winds 20 to 25 kt with gusts up to 30 kt. Seas 4 to 6 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.
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