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3NM SE Portsmouth NH

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 2:20 pm EDT May 11, 2026
Forecast Valid: 6pm EDT May 11, 2026-6pm EDT May 18, 2026

Tonight

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

Tuesday

Variable winds 5 kt or less. Increasing clouds. Seas 1 ft or less.

Tuesday Night

Variable winds 5 kt or less. Increasing clouds. Seas 1 ft or less.

Wednesday

ESE wind 5 to 8 kt becoming SSE 7 to 10 kt in the afternoon. Winds could gust as high as 20 kt. A chance of showers after 10am. Seas 1 ft or less.

Wednesday Night

S wind around 15 kt, with gusts as high as 30 kt. Rain likely. Seas 1 ft or less.

Thursday

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

Thursday Night

Variable winds 5 kt or less. Showers, mainly before 5am. Seas 1 ft or less.

Friday

Variable winds 5 kt or less. Showers likely. Seas 1 ft or less.

Friday Night

Variable winds 5 kt or less. A chance of showers. 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.