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4NM E Portsmouth NH

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 7:43 pm EST Dec 6, 2025
Forecast Valid: 8pm EST Dec 6, 2025-6pm EST Dec 13, 2025

Tonight

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

Sunday

Variable winds 5 kt or less. Increasing clouds. Seas around 1 ft.

Sunday Night

N wind 5 to 8 kt becoming WNW 7 to 10 kt in the evening. A chance of snow, mainly between 4am and 5am. Seas around 1 ft.

Monday

NW wind around 15 kt, with gusts as high as 30 kt. Sunny. Seas around 1 ft.

Monday Night

NW wind around 10 kt. Mostly clear. Seas around 1 ft.

Tuesday

W wind 5 to 8 kt becoming SW 7 to 10 kt in the afternoon. Partly sunny. Seas around 1 ft.

Tuesday Night

WSW wind 10 to 15 kt. A chance of snow before 1am. Seas around 1 ft.

Wednesday

SSW wind around 10 kt. A chance of rain. Seas around 1 ft.

Wednesday Night

WSW wind around 10 kt. A chance of rain. 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.