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4NM E Portsmouth NH

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 2:28 pm EDT Apr 11, 2026
Forecast Valid: 3pm EDT Apr 11, 2026-6pm EDT Apr 18, 2026

This Afternoon

NW wind around 15 kt, with gusts as high as 20 kt. Sunny. Seas around 2 ft.

Tonight

NW wind 5 to 10 kt, with gusts as high as 20 kt. Mostly clear. Seas around 2 ft.

Sunday

SSW 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, mainly after 11pm. Seas around 2 ft.

Monday

SSW wind 10 to 15 kt. Showers before 10am, then a chance of showers after 11am. Seas around 2 ft.

Monday Night

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

Tuesday

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

Tuesday Night

S wind 5 to 10 kt becoming SW after midnight. A chance of showers. Seas around 1 ft.

Wednesday

SW wind 5 to 10 kt becoming SSE in the afternoon. Partly sunny. 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.