For More Weather Information:

23NM ENE Portsmouth NH

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 6:52 pm EST Mar 7, 2026
Forecast Valid: 7pm EST Mar 7, 2026-6pm EDT Mar 14, 2026

Tonight

SSW wind 15 to 20 kt, with gusts as high as 25 kt. A chance of rain after midnight. Widespread fog, mainly between 8pm and 1am. Seas around 7 ft.

Sunday

SW wind around 15 kt, with gusts as high as 20 kt. A slight chance of rain before 10am. Widespread fog, mainly before 9am. Seas 5 to 6 ft.

Sunday Night

WSW wind around 15 kt, with gusts as high as 20 kt. Mostly clear. Seas around 4 ft.

Monday

SSW wind 15 to 18 kt increasing to 17 to 20 kt in the afternoon. Winds could gust as high as 25 kt. Mostly sunny. Seas 4 to 5 ft.

Monday Night

SW wind 15 to 20 kt decreasing to 10 to 15 kt after midnight. Winds could gust as high as 25 kt. Mostly clear. Seas 4 to 5 ft.

Tuesday

SW wind around 10 kt becoming S in the afternoon. Sunny. Seas 2 to 3 ft.

Tuesday Night

S wind around 15 kt becoming E after midnight. Winds could gust as high as 25 kt. Partly cloudy. Seas 2 to 3 ft.

Wednesday

E wind 15 to 20 kt becoming SSE in the afternoon. Winds could gust as high as 30 kt. A chance of rain. Seas 4 to 5 ft.

Wednesday Night

S wind 20 to 25 kt, with gusts as high as 35 kt. A chance of rain. Seas 6 ft building to 8 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.