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9NM ESE Portsmouth NH

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 6:16 am EDT Sep 3, 2025
Forecast Valid: 11am EDT Sep 3, 2025-6pm EDT Sep 9, 2025

Today

SSE wind 5 to 10 kt. Sunny. Seas 1 to 2 ft.

Tonight

SSE wind 5 to 10 kt becoming SSW after midnight. Partly cloudy. Seas 1 to 2 ft.

Thursday

SSW wind 5 to 8 kt becoming SSE 10 to 15 kt in the afternoon. Sunny. Seas 1 to 2 ft.

Thursday Night

S wind 10 to 15 kt. A chance of showers after 3am. Seas 2 to 3 ft.

Friday

SSE wind 10 to 15 kt, with gusts as high as 20 kt. A chance of showers before 10am. Seas around 2 ft.

Friday Night

SSW wind 15 to 20 kt decreasing to 10 to 15 kt after midnight. Mostly clear. Seas around 3 ft.

Saturday

S wind 10 to 15 kt. A chance of showers between 11am and 2pm, then a chance of showers and thunderstorms after 2pm. Seas around 2 ft.

Saturday Night

WSW wind around 10 kt becoming W after midnight. Showers likely and possibly a thunderstorm. Seas 2 to 3 ft.

Sunday

Variable winds 5 kt or less. A chance of showers. Seas 1 to 2 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.