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8NM SE Portsmouth NH

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 2:16 pm EDT May 20, 2026
Forecast Valid: 6pm EDT May 20, 2026-6pm EDT May 27, 2026

Tonight

WNW wind around 10 kt becoming NNW after midnight. Scattered showers, mainly before midnight. Seas around 2 ft.

Thursday

NNE wind 5 to 10 kt becoming S in the afternoon. Cloudy, then gradually becoming mostly sunny. Seas around 1 ft.

Thursday Night

SW wind 5 to 10 kt becoming N after midnight. Partly cloudy. Seas around 1 ft.

Friday

N wind 5 to 10 kt becoming SSE in the afternoon. Sunny. Seas around 1 ft.

Friday Night

S wind 5 to 10 kt becoming variable and less than 5 kt after midnight. Partly cloudy. Seas 1 to 2 ft.

Saturday

Variable winds 5 kt or less. Mostly cloudy. Seas around 1 ft.

Saturday Night

Variable winds 5 kt or less. A chance of showers after 9pm. Seas around 1 ft.

Sunday

E wind around 10 kt. Showers likely. Seas around 1 ft.

Sunday Night

E wind around 10 kt. Showers likely. 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.