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3NM SE Portsmouth NH

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 2:17 pm EDT Jul 9, 2026
Forecast Valid: 6pm EDT Jul 9, 2026-6pm EDT Jul 16, 2026

Tonight

S wind 5 to 10 kt becoming SW in the evening. Isolated showers between 8pm and 9pm. Patchy fog after 3am. Seas 1 ft or less.

Friday

Variable winds 5 kt or less. Isolated showers and thunderstorms after 2pm. Patchy fog before 8am. Seas 1 ft or less.

Friday Night

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

Saturday

Variable winds 5 kt or less. Partly sunny through mid morning, then becoming sunny. Seas 2 ft subsiding to 1 ft or less.

Saturday Night

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

Sunday

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

Sunday Night

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

Monday

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

Monday Night

SW wind around 10 kt. Mostly clear. 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.