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8NM SE Portsmouth NH

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 8:21 pm EDT Jun 30, 2026
Forecast Valid: 9pm EDT Jun 30, 2026-6pm EDT Jul 7, 2026

Tonight

SSW wind 10 to 15 kt. A chance of showers and thunderstorms, mainly between 2am and 5am. Seas around 2 ft.

Wednesday

SSW wind around 10 kt becoming SSE in the afternoon. A chance of showers and thunderstorms, mainly between 7am and 10am. Seas around 2 ft.

Wednesday Night

SW wind around 10 kt. Partly cloudy. Seas around 2 ft.

Thursday

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

Thursday Night

WSW wind 5 to 10 kt. Mostly clear. Seas around 1 ft.

Friday

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

Friday Night

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

Independence Day

Variable winds 5 kt or less. A chance of showers and thunderstorms after 3pm. Seas around 1 ft.

Saturday Night

Variable winds 5 kt or less. A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 9pm. Seas around 1 ft.

Winds and seas higher in and near tstms.

*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.