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3NM SE Portsmouth NH

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 1:29 am EST Feb 27, 2026
Forecast Valid: 2am EST Feb 27, 2026-6pm EST Mar 5, 2026

Friday

Variable winds less than 5 kt becoming SSW 5 to 10 kt in the afternoon. Sunny. Seas 1 ft or less.

Friday Night

SSW wind around 10 kt, with gusts as high as 20 kt. Mostly clear. Seas 1 ft or less.

Saturday

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

Saturday Night

SW wind 5 to 10 kt becoming NW after midnight. Partly cloudy. Seas 1 ft or less.

Sunday

NW wind around 10 kt becoming N in the morning. Winds could gust as high as 20 kt. A chance of snow after 7am. Seas 1 ft or less.

Sunday Night

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

Monday

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

Monday Night

Variable winds 5 kt or less. Mostly clear. Seas 1 ft or less.

Tuesday

WSW wind 5 to 10 kt becoming SSW in the afternoon. Partly sunny. 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.