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10NM S Portsmouth NH

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 12:44 am EST Nov 3, 2025
Forecast Valid: 3am EST Nov 3, 2025-6pm EST Nov 9, 2025

Monday

SW wind 5 to 8 kt becoming S 10 to 15 kt in the afternoon. A chance of showers, mainly after 4pm. Seas 1 to 2 ft.

Monday Night

S wind 15 to 20 kt becoming W after midnight. Winds could gust as high as 25 kt. Showers, mainly before 11pm. Seas around 2 ft.

Tuesday

WNW wind 20 to 25 kt, with gusts as high as 30 kt. Sunny. Seas 1 to 2 ft.

Tuesday Night

W wind 10 to 15 kt, with gusts as high as 20 kt. Mostly clear. Seas around 1 ft.

Wednesday

W wind around 10 kt becoming SSW in the afternoon. A chance of showers after 5pm. Seas around 1 ft.

Wednesday Night

SW wind 10 to 15 kt becoming NW 15 to 20 kt after midnight. Showers likely, mainly between 9pm and 4am. Seas around 1 ft.

Thursday

NW wind around 20 kt, with gusts as high as 30 kt. A chance of showers before 9am. Seas 1 to 2 ft.

Thursday Night

NW wind 7 to 10 kt becoming W 5 to 8 kt after midnight. Mostly clear. Seas around 1 ft.

Friday

WSW wind 5 to 8 kt becoming SSW 10 to 15 kt in the afternoon. Winds could gust as high as 25 kt. Partly sunny. Seas around 1 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.