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10NM S Portsmouth NH

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 9:29 am EST Dec 6, 2025
Forecast Valid: 1pm EST Dec 6, 2025-6pm EST Dec 12, 2025

This Afternoon

Variable winds 5 kt or less. A chance of snow before 2pm. Seas around 1 ft.

Tonight

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

Sunday

NW wind 7 to 10 kt decreasing to 5 to 8 kt in the afternoon. Partly sunny. Seas around 1 ft.

Sunday Night

NW wind 5 to 10 kt increasing to 10 to 15 kt after midnight. A chance of snow after 9pm. Seas around 2 ft.

Monday

NW wind 15 to 20 kt. Sunny. Seas 2 to 3 ft.

Monday Night

NW wind 12 to 15 kt decreasing to 10 to 13 kt after midnight. Partly cloudy. Seas around 2 ft.

Tuesday

W wind 10 to 15 kt becoming SSW in the afternoon. Partly sunny. Seas around 2 ft.

Tuesday Night

WSW wind around 15 kt. A chance of snow. Seas around 2 ft.

Wednesday

SSW wind 10 to 15 kt. A chance of rain. 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.