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8NM SE Portsmouth NH

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 2:39 am EDT Apr 21, 2026
Forecast Valid: 5am EDT Apr 21, 2026-6pm EDT Apr 27, 2026

Today

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

Tonight

SSE wind around 15 kt becoming SSW after midnight. Increasing clouds. Seas around 2 ft.

Wednesday

S wind 10 to 15 kt. A chance of showers, mainly after 7am. Seas around 2 ft.

Wednesday Night

S wind 5 to 10 kt. Mostly cloudy. Seas around 2 ft.

Thursday

WSW wind 5 to 10 kt becoming NW in the afternoon. Partly sunny. Seas around 1 ft.

Thursday Night

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

Friday

NNW wind 5 to 10 kt becoming ESE in the afternoon. Mostly sunny. Seas around 1 ft.

Friday Night

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

Saturday

NNE wind 5 to 10 kt becoming ESE 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.