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6NM SSE Portsmouth NH

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 6:51 pm EST Nov 29, 2025
Forecast Valid: 6pm EST Nov 29, 2025-6pm EST Dec 6, 2025

Tonight

WNW wind 5 to 10 kt becoming variable and less than 5 kt in the evening. Increasing clouds. Seas around 1 ft.

Sunday

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

Sunday Night

S wind 10 to 15 kt becoming W after midnight. Winds could gust as high as 20 kt. Rain, mainly before midnight. Seas 3 to 4 ft.

Monday

W wind 10 to 15 kt becoming NW in the afternoon. Winds could gust as high as 20 kt. Sunny. Seas 2 to 3 ft.

Monday Night

NW wind 5 to 10 kt becoming variable and less than 5 kt in the evening. Mostly cloudy. Seas around 1 ft.

Tuesday

Variable winds 5 kt or less. A chance of snow before 11am, then rain and snow. Seas around 1 ft.

Tuesday Night

N wind 10 to 13 kt increasing to 12 to 15 kt after midnight. Rain and snow before 3am, then a chance of snow. Seas 1 ft building to 3 ft.

Wednesday

NNW wind 5 to 10 kt becoming W in the afternoon. Mostly sunny. Seas around 3 ft.

Wednesday Night

SW wind 5 to 10 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.