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9NM SE Portsmouth NH

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 2:33 pm EDT Mar 27, 2026
Forecast Valid: 5pm EDT Mar 27, 2026-6pm EDT Apr 3, 2026

Tonight

NNW wind 10 to 15 kt becoming NNE after midnight. Mostly clear. Seas around 2 ft.

Saturday

N wind 10 to 15 kt becoming ENE 5 to 8 kt in the afternoon. Mostly sunny. Seas 1 to 2 ft.

Saturday Night

S wind around 10 kt becoming WNW after midnight. A slight chance of snow showers, mainly between 11pm and midnight. Seas 1 to 2 ft.

Sunday

WSW wind 10 to 15 kt becoming SSW in the afternoon. Winds could gust as high as 20 kt. Mostly sunny. Seas around 2 ft.

Sunday Night

SSW wind 15 to 20 kt. Mostly cloudy. Seas around 3 ft.

Monday

SW wind around 15 kt. Partly sunny. Seas around 2 ft.

Monday Night

WSW wind around 10 kt. Mostly cloudy. Seas around 2 ft.

Tuesday

SSE wind 10 to 15 kt. A chance of rain. Seas 1 to 2 ft.

Tuesday Night

SSW wind 15 to 18 kt increasing to 17 to 20 kt after midnight. Winds could gust as high as 30 kt. A chance of rain. Seas 2 to 3 ft.

*Notices:

This forecast is for a single location. For safety concerns, mariners should be aware of the weather over a larger area. Forecast information for a larger area can be found within the zone forecast and the NDFD graphics.
The forecast conditions at a particular point may not exceed the criteria of a Small Craft Advisory, Gale, Storm etc. These watches/warnings/advisories are issued for the entire zone in which the point resides and mariners should act accordingly.