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4NM E Portsmouth NH

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 12:39 am EDT Apr 9, 2026
Forecast Valid: 1am EDT Apr 9, 2026-6pm EDT Apr 15, 2026

Thursday

SW wind 5 to 8 kt becoming SSE 7 to 10 kt in the afternoon. Sunny. Seas 1 to 2 ft.

Thursday Night

SSW wind 10 to 15 kt. Mostly clear. Seas 2 to 3 ft.

Friday

S wind around 10 kt. Mostly sunny. Seas 1 to 2 ft.

Friday Night

SSW wind around 10 kt becoming WSW after midnight. A chance of showers. Seas around 2 ft.

Saturday

NW wind around 10 kt. Sunny. Seas around 2 ft.

Saturday Night

WNW wind 5 to 10 kt. Mostly clear. Seas around 2 ft.

Sunday

WNW wind 5 to 10 kt becoming S in the afternoon. Sunny. Seas around 2 ft.

Sunday Night

SSW wind around 10 kt. Mostly cloudy. Seas around 2 ft.

Monday

SSW wind around 15 kt. Mostly cloudy. 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.