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4NM E Portsmouth NH

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 9:15 pm EDT May 10, 2026
Forecast Valid: 10pm EDT May 10, 2026-6pm EDT May 17, 2026

Tonight

Variable winds 5 kt or less. Areas of fog before 3am. Seas around 1 ft.

Monday

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

Monday Night

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

Tuesday

Variable winds 5 kt or less. Sunny. Seas 1 to 2 ft.

Tuesday Night

Variable winds 5 kt or less. Partly cloudy. Seas 2 to 3 ft.

Wednesday

Variable winds less than 5 kt becoming S 5 to 10 kt in the morning. A chance of showers after 3pm. Seas around 2 ft.

Wednesday Night

S wind 10 to 15 kt. Showers, mainly after 9pm. Seas around 3 ft.

Thursday

SSE wind around 10 kt. Showers. Seas around 3 ft.

Thursday Night

Variable winds 5 kt or less. Showers likely. Seas around 3 ft.

*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.