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3NM SE Portsmouth NH

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 6:49 am EDT Sep 24, 2026
Forecast Valid: 1pm EDT Sep 24, 2026-6pm EDT Sep 30, 2026

This Afternoon

ENE wind around 10 kt, with gusts as high as 20 kt. Sunny. Seas 1 ft or less.

Tonight

NNE wind 5 to 10 kt, with gusts as high as 20 kt. Mostly cloudy. Seas 1 ft or less.

Friday

NNE wind around 15 kt, with gusts as high as 30 kt. Mostly cloudy. Seas 1 ft or less.

Friday Night

NE wind around 20 kt, with gusts as high as 35 kt. Rain likely, mainly after 4am. Seas 1 ft or less.

Saturday

NNE wind around 20 kt, with gusts as high as 35 kt. Rain. Seas 1 ft or less.

Saturday Night

NNE wind around 25 kt, with gusts as high as 40 kt. Rain. Seas 1 ft or less.

Sunday

NNE wind 20 to 25 kt, with gusts as high as 40 kt. Rain. Seas 1 ft or less.

Sunday Night

NNE wind 15 to 20 kt, with gusts as high as 30 kt. Showers. Seas 1 ft or less.

Monday

NNE wind 10 to 15 kt, with gusts as high as 30 kt. Showers 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.