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10NM SSE Portsmouth NH

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 2:58 pm EDT Oct 1, 2026
Forecast Valid: 9pm EDT Oct 1, 2026-6pm EDT Oct 8, 2026

Tonight

SW wind around 10 kt. Partly cloudy. Seas around 2 ft.

Friday

SSW wind around 10 kt becoming WSW in the afternoon. A chance of showers, mainly after 5pm. Seas around 2 ft.

Friday Night

WNW wind around 10 kt becoming NNW after midnight. A chance of showers, mainly before 7pm. Seas around 2 ft.

Saturday

Variable winds 5 kt or less. Sunny. Seas around 2 ft.

Saturday Night

Variable winds 5 kt or less. Mostly clear. Seas 1 to 2 ft.

Sunday

ENE wind 5 to 10 kt becoming ESE in the afternoon. Mostly sunny. Seas around 2 ft.

Sunday Night

Variable winds 5 kt or less. A chance of showers after 11pm. Seas 2 to 3 ft.

Monday

W wind 5 to 10 kt. Partly sunny. Seas 3 to 4 ft.

Monday Night

WNW wind around 15 kt, with gusts as high as 20 kt. Mostly clear. Seas around 4 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.