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4NM E Portsmouth NH

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 2:29 pm EDT May 4, 2026
Forecast Valid: 8pm EDT May 4, 2026-6pm EDT May 11, 2026

Tonight

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

Tuesday

S wind 10 to 15 kt. Sunny. Seas 1 to 2 ft.

Tuesday Night

SSW wind 10 to 15 kt. Increasing clouds. Seas around 1 ft.

Wednesday

S wind 15 to 20 kt. Rain likely, mainly after 4pm. Seas around 2 ft.

Wednesday Night

S wind 10 to 15 kt becoming SW after midnight. Winds could gust as high as 20 kt. Rain, mainly before 2am. Seas around 2 ft.

Thursday

WNW wind 5 to 10 kt becoming WSW in the afternoon. A chance of showers, mainly between 2pm and 5pm. Seas 1 to 2 ft.

Thursday Night

Variable winds 5 kt or less. A chance of showers between 8pm and 1am. Seas around 1 ft.

Friday

W wind 5 to 10 kt. Mostly sunny. Seas around 1 ft.

Friday Night

Variable winds 5 kt or less. Mostly clear. 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.