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8NM SE Portsmouth NH

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 6:35 am EDT Apr 12, 2026
Forecast Valid: 8am EDT Apr 12, 2026-6pm EDT Apr 18, 2026

Today

SSW wind 5 to 8 kt becoming S 7 to 10 kt in the afternoon. Increasing clouds. Seas 1 to 2 ft.

Tonight

S wind around 15 kt, with gusts as high as 25 kt. Rain. Seas around 3 ft.

Monday

SSW wind 15 to 20 kt. A chance of showers, mainly after 1pm. Seas around 4 ft.

Monday Night

WSW wind 10 to 15 kt, with gusts as high as 25 kt. A chance of showers before 9pm. Seas 3 to 4 ft.

Tuesday

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

Tuesday Night

S wind 10 to 15 kt becoming SW after midnight. A chance of showers before 1am. Seas around 2 ft.

Wednesday

WSW wind around 10 kt becoming S in the afternoon. Mostly cloudy. Seas around 2 ft.

Wednesday Night

SE wind 5 to 10 kt becoming NNE after midnight. A chance of showers. Seas around 2 ft.

Thursday

ENE wind around 10 kt becoming ESE in the afternoon. A chance of showers. Seas around 1 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.