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8NM SE Portsmouth NH

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 1:27 pm EST Mar 7, 2026
Forecast Valid: 5pm EST Mar 7, 2026-6pm EDT Mar 14, 2026

Tonight

SSW wind around 20 kt. A chance of rain between midnight and 4am. Patchy fog between 8pm and 11pm. Seas 3 to 4 ft.

Sunday

SW wind around 15 kt becoming W in the afternoon. A slight chance of rain between 7am and 9am. Seas 3 to 4 ft.

Sunday Night

WSW wind 10 to 15 kt. Mostly clear. Seas around 2 ft.

Monday

SSW wind 10 to 13 kt increasing to 12 to 15 kt in the afternoon. Winds could gust as high as 25 kt. Mostly sunny. Seas 2 to 3 ft.

Monday Night

SW wind 10 to 15 kt, with gusts as high as 25 kt. Mostly clear. Seas 2 to 3 ft.

Tuesday

WSW wind 5 to 10 kt becoming S in the afternoon. Sunny. Seas around 2 ft.

Tuesday Night

S wind 10 to 15 kt becoming E after midnight. Partly cloudy. Seas around 2 ft.

Wednesday

E wind around 15 kt becoming SSE in the afternoon. Winds could gust as high as 25 kt. A chance of rain. Seas 2 to 3 ft.

Wednesday Night

S wind 20 to 25 kt, with gusts as high as 35 kt. A chance of rain. Seas 3 ft building to 5 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.