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8NM SE Portsmouth NH

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 2:20 pm EDT May 11, 2026
Forecast Valid: 5pm EDT May 11, 2026-6pm EDT May 18, 2026

Tonight

S wind 5 to 10 kt becoming NNW after midnight. Cloudy during the early evening, then gradual clearing. Seas around 2 ft.

Tuesday

NNW wind 5 to 10 kt becoming SSE in the afternoon. Sunny. Seas around 2 ft.

Tuesday Night

SSW wind 5 to 10 kt becoming N after midnight. Increasing clouds. Seas 1 to 2 ft.

Wednesday

ESE wind 5 to 8 kt becoming SSE 10 to 15 kt in the afternoon. Winds could gust as high as 20 kt. A chance of showers after 10am. Seas 1 to 2 ft.

Wednesday Night

S wind around 20 kt, with gusts as high as 25 kt. Rain. Seas around 3 ft.

Thursday

SE wind 15 to 20 kt. Rain. Seas 3 to 4 ft.

Thursday Night

E wind around 10 kt becoming NE after midnight. Showers. Seas 2 to 3 ft.

Friday

N wind 5 to 10 kt. A chance of showers. Seas 2 to 3 ft.

Friday Night

WNW wind 5 to 10 kt. A chance of showers. 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.