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3NM SE Portsmouth NH

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 1:37 pm EST Mar 6, 2026
Forecast Valid: 8pm EST Mar 6, 2026-6pm EDT Mar 13, 2026

Tonight

Variable winds 5 kt or less. Patchy fog after 5am. Seas 1 ft or less.

Saturday

SSW wind 5 to 10 kt increasing to 10 to 15 kt in the afternoon. Winds could gust as high as 25 kt. Patchy fog before 11am. Seas 1 ft or less.

Saturday Night

SSW wind around 15 kt, with gusts as high as 25 kt. Cloudy. Seas 1 ft or less.

Sunday

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

Sunday Night

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

Monday

SSW wind 10 to 15 kt, with gusts as high as 25 kt. Sunny. Seas 1 ft or less.

Monday Night

SW wind around 10 kt. Clear. Seas 1 ft or less.

Tuesday

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

Tuesday Night

SW wind 5 to 10 kt becoming NE after midnight. 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.