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3NM SE Portsmouth NH

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 1:28 am EST Mar 8, 2026
Forecast Valid: 7am EDT Mar 8, 2026-6pm EDT Mar 14, 2026

Today

SW wind around 10 kt becoming W in the afternoon. Winds could gust as high as 20 kt. Areas of fog before 8am. Seas 1 ft or less.

Tonight

WSW wind around 10 kt. Mostly clear. Seas 1 ft or less.

Monday

SW wind 10 to 15 kt becoming S in the afternoon. Winds could gust as high as 25 kt. Mostly sunny. Seas 1 ft or less.

Monday Night

SW wind 10 to 15 kt, with gusts as high as 25 kt. Mostly clear. Seas 1 ft or less.

Tuesday

Variable winds 5 kt or less. Sunny. Seas 1 ft or less.

Tuesday Night

SW wind around 10 kt. Partly cloudy. Seas 1 ft or less.

Wednesday

ENE wind around 10 kt becoming ESE in the afternoon. Winds could gust as high as 20 kt. A chance of rain after 2pm. Seas 1 ft or less.

Wednesday Night

S wind 10 to 15 kt, with gusts as high as 25 kt. A chance of rain. Seas 1 ft or less.

Thursday

S wind around 15 kt becoming SW in the afternoon. Winds could gust as high as 30 kt. Rain likely. 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.