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3NM SE Portsmouth NH

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 6:44 am EST Jan 12, 2026
Forecast Valid: 6am EST Jan 12, 2026-6pm EST Jan 18, 2026

Today

W wind 15 to 20 kt decreasing to 10 to 15 kt in the afternoon. Winds could gust as high as 35 kt. Mostly sunny. Seas 1 ft or less.

Tonight

WSW wind around 10 kt, with gusts as high as 25 kt. Partly cloudy. Seas 1 ft or less building to 2 ft.

Tuesday

WSW wind around 10 kt becoming SSW in the afternoon. Increasing clouds. Seas around 1 ft.

Tuesday Night

SSW wind 10 to 15 kt. Mostly cloudy. Seas 1 ft or less.

Wednesday

SSW wind around 10 kt. Cloudy. Seas 1 ft or less.

Wednesday Night

Variable winds 5 kt or less. A chance of showers after 8pm. Seas 1 ft or less.

Thursday

NNW wind 5 to 10 kt becoming N in the afternoon. A chance of rain. Seas 1 ft or less.

Thursday Night

N wind 15 to 20 kt. A chance of rain and snow before 10pm, then snow likely. Seas 1 ft or less.

Friday

N wind 10 to 15 kt becoming NW in the afternoon. Winds could gust as high as 20 kt. A chance of snow. 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.