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4NM E Portsmouth NH

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 2:40 pm EDT Mar 28, 2026
Forecast Valid: 7pm EDT Mar 28, 2026-6pm EDT Apr 4, 2026

Tonight

S wind 5 to 10 kt becoming NW after midnight. Mostly cloudy, then gradually becoming clear. Seas around 1 ft.

Sunday

SW wind around 10 kt. Increasing clouds. Seas around 1 ft.

Sunday Night

SSW wind around 10 kt. Increasing clouds. Seas around 1 ft.

Monday

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

Monday Night

SW wind 5 to 10 kt. Mostly cloudy. Seas around 1 ft.

Tuesday

S wind 5 to 10 kt. A chance of rain. Seas around 1 ft.

Tuesday Night

SSE wind 10 to 13 kt becoming SSW 12 to 15 kt after midnight. Winds could gust as high as 25 kt. A chance of rain. Seas 1 to 2 ft.

Wednesday

SW wind around 15 kt, with gusts as high as 25 kt. A chance of rain. Seas around 2 ft.

Wednesday Night

WNW wind around 10 kt becoming N after midnight. A chance of rain before 5am. 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.