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10NM S Portsmouth NH

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 6:04 am EST Nov 27, 2025
Forecast Valid: 6am EST Nov 27, 2025-6pm EST Dec 3, 2025

Thanksgiving Day

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

Tonight

WSW wind 10 to 15 kt. Partly cloudy. Seas 1 to 2 ft.

Friday

SW wind 15 to 20 kt, with gusts as high as 25 kt. Mostly sunny. Seas around 1 ft.

Friday Night

W wind 15 to 20 kt. Partly cloudy. Seas around 1 ft.

Saturday

WNW wind 10 to 15 kt, with gusts as high as 25 kt. Sunny. Seas around 1 ft.

Saturday Night

WNW wind 5 to 10 kt becoming WSW after midnight. Partly cloudy. Seas around 1 ft.

Sunday

S wind 5 to 10 kt increasing to 10 to 15 kt in the afternoon. A chance of rain after 1pm. Seas 1 to 2 ft.

Sunday Night

S wind around 15 kt becoming WSW after midnight. Winds could gust as high as 25 kt. Rain. Seas around 3 ft.

Monday

W wind 10 to 15 kt. Partly sunny. Seas 1 to 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.