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6NM SSE Portsmouth NH

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 6:02 am EST Nov 30, 2025
Forecast Valid: 7am EST Nov 30, 2025-6pm EST Dec 6, 2025

Today

S wind 5 to 10 kt increasing to 10 to 15 kt. Winds could gust as high as 25 kt. Rain, mainly after 2pm. Seas 1 ft building to 3 ft.

Tonight

SSW wind 10 to 15 kt becoming W after midnight. Winds could gust as high as 25 kt. Rain, mainly before midnight. Seas 3 to 4 ft.

Monday

W wind 10 to 15 kt becoming NW in the afternoon. Sunny. Seas 3 ft subsiding to 1 ft.

Monday Night

Variable winds 5 kt or less. Increasing clouds. Seas around 1 ft.

Tuesday

Variable winds 5 kt or less. Snow likely before 1pm, then rain. Seas around 1 ft.

Tuesday Night

NNE wind around 10 kt becoming NNW after midnight. Rain and snow likely, becoming all snow after 9pm, then gradually ending. Seas 1 to 2 ft.

Wednesday

NW wind 5 to 10 kt becoming W in the afternoon. Sunny. Seas around 3 ft.

Wednesday Night

SW wind 5 to 10 kt. Mostly cloudy. Seas around 3 ft.

Thursday

SW wind 10 to 15 kt, with gusts as high as 25 kt. Mostly cloudy. Seas around 3 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.