Hazardous Weather Conditions
Last Update: 610 AM EDT Mon Aug 25 2025
For More Weather Information:
25NM ENE Portsmouth NH
Marine Zone Forecast
Today
SE winds 5 to 10 kt. Seas 2 to 3 ft. Wave detail: SE 3 ft at 9 seconds. Patchy fog early this morning. Isolated showers early this morning, then scattered showers late this morning. Isolated showers this afternoon. Vsby 1 to 3 nm early this morning.
Tonight
S winds around 5 kt, becoming W with gusts up to 20 kt after midnight. Seas 2 to 3 ft, building to 3 to 5 ft after midnight. Wave detail: SE 3 ft at 7 seconds, becoming SE 4 ft at 9 seconds. Scattered showers in the evening with vsby 1 to 3 nm.
Tue
W winds around 10 kt with gusts up to 20 kt. Seas 3 to 5 ft. Wave detail: SE 5 ft at 9 seconds.
Tue Night
W winds 5 to 10 kt. Seas 2 to 4 ft. Wave detail: SE 4 ft at 8 seconds.
Wed
NW winds 5 to 10 kt, becoming S in the afternoon. Seas 2 to 3 ft. Wave detail: SE 3 ft at 8 seconds.
Wed Night
W winds 5 to 10 kt. Seas 2 to 3 ft. Wave detail: SE 3 ft at 9 seconds.
Thu
W winds 5 to 10 kt, becoming S with gusts up to 20 kt in the afternoon. Seas 2 to 3 ft.
Thu Night
SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft.
Fri
SW winds 5 to 10 kt, becoming SE in the afternoon. Seas 2 to 3 ft. A chance of showers in the afternoon.
Fri Night
S winds 5 to 10 kt, becoming NW after midnight. Seas around 2 ft. A chance of showers in the evening.
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