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8NM SE Portsmouth NH

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 6:32 pm EST Dec 4, 2025
Forecast Valid: 7pm EST Dec 4, 2025-6pm EST Dec 11, 2025

Tonight

NW wind 20 to 25 kt decreasing to 15 to 20 kt. Winds could gust as high as 35 kt. Mostly clear. Seas around 3 ft.

Friday

WNW wind 5 to 10 kt becoming SW in the afternoon. Sunny. Seas 1 to 2 ft.

Friday Night

SW wind 5 to 10 kt. Mostly cloudy. Seas 1 to 2 ft.

Saturday

Variable winds 5 kt or less. A chance of snow showers before noon, then a chance of rain showers between noon and 1pm. Seas around 1 ft.

Saturday Night

SW wind around 10 kt becoming WNW after midnight. Partly cloudy. Seas around 1 ft.

Sunday

WNW wind 5 to 10 kt becoming NNW in the afternoon. Partly sunny. Seas around 1 ft.

Sunday Night

N wind 10 to 13 kt increasing to 12 to 15 kt after midnight. Winds could gust as high as 20 kt. A chance of snow after midnight. Seas 1 to 2 ft.

Monday

NW wind 15 to 20 kt, with gusts as high as 25 kt. Mostly sunny. Seas around 2 ft.

Monday Night

WNW wind around 15 kt, with gusts as high as 25 kt. Mostly clear. Seas around 2 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.