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8NM SE Portsmouth NH

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 5:38 am EDT Mar 23, 2026
Forecast Valid: 10am EDT Mar 23, 2026-6pm EDT Mar 29, 2026

Today

NNE wind around 20 kt, with gusts as high as 30 kt. A chance of snow showers. Seas around 3 ft.

Tonight

NNE wind around 15 kt. A chance of snow showers, mainly before 10pm. Seas 2 to 3 ft.

Tuesday

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

Tuesday Night

SSW wind around 15 kt becoming WSW after midnight. Winds could gust as high as 20 kt. Partly cloudy. Seas 2 to 3 ft.

Wednesday

W wind 10 to 15 kt becoming SSW in the afternoon. Winds could gust as high as 25 kt. Partly sunny. Seas around 3 ft.

Wednesday Night

SSW wind 15 to 20 kt. A chance of rain after 4am. Seas 2 to 3 ft.

Thursday

SW wind around 15 kt. A chance of rain before 9am. Seas around 2 ft.

Thursday Night

S wind 15 to 20 kt, with gusts as high as 30 kt. Rain likely. Seas 3 to 4 ft.

Friday

NNW wind 15 to 20 kt, with gusts as high as 30 kt. Rain likely. Seas 3 to 4 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.