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3NM SE Portsmouth NH

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 8:42 pm EDT Aug 30, 2026
Forecast Valid: 10pm EDT Aug 30, 2026-6pm EDT Sep 6, 2026

Tonight

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

Monday

N wind 5 to 10 kt becoming SE in the afternoon. Sunny. Seas 1 ft or less.

Monday Night

Variable winds 5 kt or less. A chance of showers after 1am. Patchy fog after 2am. Seas 1 ft or less.

Tuesday

SSE wind 5 to 10 kt becoming E in the morning. Showers, mainly after 9am. Patchy fog before 9am. Seas 1 ft or less.

Tuesday Night

ESE wind 5 to 10 kt. Showers likely, mainly before 1am. Seas 1 ft or less.

Wednesday

Variable winds 5 kt or less. A chance of showers after noon. Seas 1 ft or less.

Wednesday Night

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

Thursday

Variable winds 5 kt or less. A chance of showers. Seas 1 ft or less.

Thursday 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.