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8NM SE Portsmouth NH

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 1:37 am EDT Apr 6, 2026
Forecast Valid: 11am EDT Apr 6, 2026-6pm EDT Apr 12, 2026

Today

W wind around 15 kt, with gusts as high as 25 kt. Mostly sunny. Seas around 2 ft.

Tonight

WNW wind 5 to 10 kt. Partly cloudy. Seas 1 to 2 ft.

Tuesday

WSW wind around 10 kt becoming ENE in the afternoon. A chance of rain. Seas around 1 ft.

Tuesday Night

NW wind around 15 kt, with gusts as high as 25 kt. Mostly cloudy, then gradually becoming clear. Seas around 2 ft.

Wednesday

NNW wind 5 to 10 kt becoming S in the afternoon. Sunny. Seas around 1 ft.

Wednesday Night

S wind 10 to 15 kt becoming SSW after midnight. Winds could gust as high as 20 kt. Mostly clear. Seas around 2 ft.

Thursday

SSW wind 10 to 15 kt becoming SSE 15 to 20 kt in the afternoon. Sunny. Seas 2 to 3 ft.

Thursday Night

SSW wind 17 to 20 kt decreasing to 15 to 18 kt after midnight. Winds could gust as high as 25 kt. Partly cloudy. Seas around 3 ft.

Friday

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