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4NM E Portsmouth NH

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 2:34 pm EDT Apr 10, 2026
Forecast Valid: 6pm EDT Apr 10, 2026-6pm EDT Apr 17, 2026

Tonight

S wind 10 to 15 kt becoming WSW after midnight. Showers likely, mainly between 2am and 3am. Seas around 1 ft.

Saturday

NW wind 10 to 15 kt. Sunny. Seas around 1 ft.

Saturday Night

WNW wind 5 to 10 kt. Clear. Seas around 1 ft.

Sunday

SW wind 5 to 8 kt becoming S 7 to 10 kt in the afternoon. Increasing clouds. Seas around 2 ft.

Sunday Night

S wind around 10 kt. Showers likely, mainly after 11pm. Seas around 2 ft.

Monday

SW wind around 15 kt. A chance of showers. Seas around 2 ft.

Monday Night

SW wind around 10 kt. A chance of showers before 9pm. Seas 1 to 2 ft.

Tuesday

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

Tuesday Night

Variable winds 5 kt or less. A chance of showers. 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.