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8NM SE Portsmouth NH

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 1:08 am EDT Mar 19, 2026
Forecast Valid: 1am EDT Mar 19, 2026-6pm EDT Mar 25, 2026

Thursday

SSE wind 5 to 10 kt increasing to 10 to 15 kt in the afternoon. Mostly sunny. Seas around 2 ft.

Thursday Night

S wind around 15 kt becoming SW after midnight. Winds could gust as high as 20 kt. Partly cloudy. Seas around 3 ft.

Friday

WSW wind 5 to 8 kt becoming S 10 to 15 kt in the afternoon. Increasing clouds. Seas around 2 ft.

Friday Night

S wind 15 to 20 kt, with gusts as high as 25 kt. Rain likely, mainly after 10pm. Seas 2 to 3 ft.

Saturday

W wind around 15 kt becoming NNW in the afternoon. Partly sunny. Seas around 3 ft.

Saturday Night

W wind around 15 kt. Mostly cloudy. Seas around 3 ft.

Sunday

SSW wind 10 to 15 kt. A chance of rain after 9am. Seas around 3 ft.

Sunday Night

NNE wind 15 to 20 kt. A chance of rain before 1am, then a chance of rain and snow. Seas 2 to 3 ft.

Monday

NNE wind 15 to 20 kt, with gusts as high as 30 kt. A chance of rain and snow before 2pm. Seas around 3 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.