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3NM SE Portsmouth NH

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 6:46 am EDT Sep 11, 2026
Forecast Valid: 12pm EDT Sep 11, 2026-6pm EDT Sep 17, 2026

This Afternoon

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

Tonight

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

Saturday

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

Saturday Night

S wind 5 to 10 kt. A chance of showers after 2am. Seas 1 ft or less.

Sunday

Variable winds 5 kt or less. Showers likely, mainly before 2pm. Seas 1 ft or less.

Sunday Night

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

Monday

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

Monday Night

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

Tuesday

Variable winds 5 kt or less. 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.