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10NM S Portsmouth NH

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 6:43 am EDT Nov 1, 2025
Forecast Valid: 8am EDT Nov 1, 2025-6pm EST Nov 7, 2025

Today

W wind around 20 kt, with gusts as high as 30 kt. Sunny. Seas 4 to 5 ft.

Tonight

WNW wind 10 to 15 kt. Mostly clear. Seas around 3 ft.

Sunday

WNW wind around 10 kt. Sunny. Seas around 2 ft.

Sunday Night

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

Monday

SSW wind 5 to 8 kt increasing to 7 to 10 kt in the afternoon. A chance of showers after 4pm. Seas around 1 ft.

Monday Night

SSW wind around 15 kt becoming W after midnight. Showers likely, mainly between 9pm and 3am. Seas around 2 ft.

Tuesday

WNW wind 15 to 20 kt, with gusts as high as 30 kt. A chance of showers before 9am. Seas around 2 ft.

Tuesday Night

W wind around 15 kt, with gusts as high as 20 kt. Mostly clear. Seas around 2 ft.

Wednesday

W wind around 10 kt. Mostly 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.