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8NM SE Portsmouth NH

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 6:56 am EDT Mar 25, 2026
Forecast Valid: 7am EDT Mar 25, 2026-6pm EDT Mar 31, 2026

Today

W wind around 10 kt becoming S in the afternoon. Mostly sunny. Seas 2 to 3 ft.

Tonight

SSW wind around 15 kt, with gusts as high as 25 kt. A slight chance of rain after 1am. Seas around 2 ft.

Thursday

SSW wind 15 to 20 kt. A chance of rain, mainly before 5pm. Seas 2 to 3 ft.

Thursday Night

SSW wind 15 to 20 kt becoming WSW after midnight. Winds could gust as high as 25 kt. Rain, mainly after 9pm. Seas around 4 ft.

Friday

NNW wind around 15 kt, with gusts as high as 25 kt. Rain likely before 10am. Seas 2 to 3 ft.

Friday Night

NNW wind around 15 kt, with gusts as high as 25 kt. Mostly clear. Seas around 2 ft.

Saturday

N wind 5 to 10 kt becoming SSE in the afternoon. Mostly sunny. Seas 1 to 2 ft.

Saturday Night

WSW wind 10 to 15 kt. Partly cloudy. Seas around 2 ft.

Sunday

W wind 10 to 15 kt, with gusts as high as 20 kt. 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.