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4NM E Portsmouth NH

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 2:31 am EDT Apr 4, 2026
Forecast Valid: 5am EDT Apr 4, 2026-6pm EDT Apr 10, 2026

Today

NW wind 10 to 15 kt becoming E in the afternoon. Mostly sunny. Seas around 1 ft.

Tonight

SE wind around 10 kt. Showers, mainly after 5am. Seas around 1 ft.

Sunday

SSE wind around 10 kt becoming SW in the afternoon. Showers. Patchy dense fog before 1pm. Seas around 1 ft.

Sunday Night

W wind 10 to 15 kt. Showers likely, mainly before 9pm. Seas around 1 ft.

Monday

W wind around 10 kt. Mostly sunny. Seas around 1 ft.

Monday Night

W wind 5 to 10 kt. Partly cloudy. Seas around 1 ft.

Tuesday

WNW wind 5 to 10 kt becoming S in the afternoon. A chance of snow showers before 11am, then a chance of rain and snow showers. Seas around 1 ft.

Tuesday Night

NW wind around 10 kt. A chance of snow showers. Seas around 1 ft.

Wednesday

NNW wind 5 to 10 kt becoming SSE in the afternoon. 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.