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8NM SE Portsmouth NH

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 2:25 am EDT Apr 20, 2026
Forecast Valid: 3am EDT Apr 20, 2026-6pm EDT Apr 26, 2026

Monday

W wind 5 to 10 kt. A slight chance of showers after 3pm. Seas 1 to 2 ft.

Monday Night

N wind 10 to 15 kt. A slight chance of showers between 8pm and 9pm. Seas 1 to 2 ft.

Tuesday

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

Tuesday Night

SSE wind 10 to 15 kt becoming SSW after midnight. Partly cloudy. Seas 1 to 2 ft.

Wednesday

S wind around 10 kt. Mostly cloudy. Seas around 2 ft.

Wednesday Night

S wind 5 to 10 kt becoming WSW after midnight. Mostly cloudy. Seas around 2 ft.

Thursday

Variable winds 5 kt or less. Partly sunny. Seas around 1 ft.

Thursday Night

NW wind around 10 kt. Partly cloudy. Seas around 1 ft.

Friday

NNW wind 5 to 10 kt becoming ENE in the afternoon. Mostly sunny. 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.