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9NM S Portsmouth NH

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 7:43 pm EST Dec 6, 2025
Forecast Valid: 11pm EST Dec 6, 2025-6pm EST Dec 13, 2025

Overnight

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

Sunday

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

Sunday Night

N wind 5 to 8 kt becoming WNW 7 to 10 kt after midnight. A chance of snow before 1am, then a slight chance of snow after 2am. Seas 1 ft or less.

Monday

NW wind around 10 kt, with gusts as high as 20 kt. Sunny. Seas 1 ft or less.

Monday Night

NW wind 5 to 10 kt. Mostly clear. Seas 1 ft or less.

Tuesday

W wind 5 to 10 kt becoming SSW in the afternoon. Partly sunny. Seas 1 ft or less.

Tuesday Night

SW wind around 10 kt. A chance of snow before 1am. Seas 1 ft or less.

Wednesday

SSW wind 5 to 10 kt. A chance of rain. Seas 1 ft or less.

Wednesday Night

WSW wind 5 to 10 kt. A chance of rain. Seas 1 ft or less.

*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.