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10NM S Portsmouth NH

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 1:10 pm EDT Oct 4, 2025
Forecast Valid: 6pm EDT Oct 4, 2025-6pm EDT Oct 11, 2025

Tonight

Variable winds 5 kt or less. Mostly clear. Seas around 2 ft.

Sunday

Variable winds 5 kt or less. Sunny. Seas around 2 ft.

Sunday Night

Variable winds 5 kt or less. Mostly clear. Seas around 2 ft.

Monday

SSW wind 5 to 10 kt. Sunny. Seas around 2 ft.

Monday Night

SW wind around 10 kt. Mostly clear. Seas around 2 ft.

Tuesday

SSW wind 10 to 15 kt, with gusts as high as 20 kt. Mostly sunny. Seas around 2 ft.

Tuesday Night

SSW wind around 15 kt, with gusts as high as 25 kt. Showers, mainly after 11pm. Seas around 2 ft.

Wednesday

W wind around 10 kt becoming N in the afternoon. Showers. Seas 1 to 2 ft.

Wednesday Night

N wind around 10 kt. Partly cloudy. Seas 1 to 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.