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4NM E Portsmouth NH

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 8:00 pm EDT Mar 13, 2026
Forecast Valid: 9pm EDT Mar 13, 2026-6pm EDT Mar 20, 2026

Tonight

S wind around 15 kt, with gusts as high as 25 kt. Rain and snow, mainly before 4am. Seas around 1 ft.

Saturday

W wind 10 to 15 kt, with gusts as high as 25 kt. A slight chance of rain and snow before 7am. Seas around 1 ft.

Saturday Night

WNW wind 17 to 20 kt decreasing to 15 to 18 kt after midnight. Winds could gust as high as 30 kt. Mostly clear. Seas around 1 ft.

Sunday

Variable winds 5 kt or less. Partly sunny. Seas around 1 ft.

Sunday Night

SSE wind 10 to 15 kt, with gusts as high as 20 kt. Mostly cloudy. Seas around 1 ft.

Monday

SSE wind 15 to 20 kt, with gusts as high as 30 kt. Rain, mainly after 9am. Seas 1 to 2 ft.

Monday Night

S wind around 25 kt, with gusts as high as 35 kt. Rain. Seas around 2 ft.

Tuesday

WSW wind 15 to 20 kt, with gusts as high as 25 kt. Rain likely. Seas 1 to 2 ft.

Tuesday Night

W wind 15 to 20 kt. 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.