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4NM E Portsmouth NH

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 2:27 pm EDT Mar 26, 2026
Forecast Valid: 4pm EDT Mar 26, 2026-6pm EDT Apr 2, 2026

Tonight

SW wind 7 to 10 kt becoming WSW 5 to 8 kt after midnight. Rain, mainly before 3am. Patchy fog after 9pm. Seas around 1 ft.

Friday

NNW wind around 10 kt. Mostly cloudy, then gradually becoming sunny. Seas 1 to 2 ft.

Friday Night

N wind around 10 kt. Partly cloudy. Seas around 1 ft.

Saturday

N wind 5 to 10 kt becoming NNW in the afternoon. Mostly sunny. Seas around 1 ft.

Saturday Night

Variable winds 5 kt or less. Partly cloudy. Seas around 1 ft.

Sunday

SSW wind 10 to 15 kt. Mostly sunny. Seas around 1 ft.

Sunday Night

SSW wind around 10 kt. Mostly cloudy. Seas around 1 ft.

Monday

SW wind around 10 kt. Mostly cloudy. Seas 1 to 2 ft.

Monday Night

WSW wind around 10 kt becoming WNW after midnight. Mostly cloudy. 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.