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4NM E Portsmouth NH

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 7:29 am EDT Apr 29, 2026
Forecast Valid: 8am EDT Apr 29, 2026-6pm EDT May 5, 2026

Today

NE wind 5 to 10 kt. Scattered showers, mainly between 4pm and 5pm. Patchy dense fog after 5pm. Seas around 1 ft.

Tonight

ENE wind 5 to 10 kt becoming ESE after midnight. Showers likely, with thunderstorms also possible after 2am. Patchy dense fog. Seas around 2 ft.

Thursday

ESE wind 5 to 10 kt. Rain and possibly a thunderstorm. Seas around 2 ft.

Thursday Night

WNW wind 5 to 10 kt. Showers likely, mainly before 9pm. Seas around 2 ft.

Friday

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

Friday Night

W wind around 10 kt. Mostly clear. Seas around 2 ft.

Saturday

W wind 5 to 10 kt becoming SSW in the afternoon. Mostly sunny. Seas around 2 ft.

Saturday Night

Variable winds 5 kt or less. Mostly cloudy. Seas around 2 ft.

Sunday

WNW wind 5 to 10 kt becoming WSW in the afternoon. Mostly sunny. 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.