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8NM SE Portsmouth NH

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 7:24 am EDT May 4, 2026
Forecast Valid: 1pm EDT May 4, 2026-6pm EDT May 10, 2026

This Afternoon

WSW wind around 15 kt, with gusts as high as 25 kt. Sunny. Seas around 3 ft.

Tonight

SSW wind around 15 kt, with gusts as high as 20 kt. Mostly clear. Seas around 3 ft.

Tuesday

S wind 15 to 18 kt increasing to 17 to 20 kt in the afternoon. Mostly sunny. Seas 3 to 4 ft.

Tuesday Night

SSW wind 20 to 25 kt. Mostly cloudy. Seas 4 to 5 ft.

Wednesday

S wind around 20 kt. Showers likely, mainly after 5pm. Seas 4 to 5 ft.

Wednesday Night

S wind 15 to 20 kt becoming W 10 to 15 kt after midnight. Showers, mainly before 2am. Seas 3 to 4 ft.

Thursday

NW wind 5 to 10 kt becoming ESE in the afternoon. A chance of showers. Seas around 2 ft.

Thursday Night

SSE wind 5 to 10 kt becoming WNW after midnight. A chance of showers. Seas around 2 ft.

Friday

WNW wind around 10 kt becoming WSW in the afternoon. Mostly sunny. Seas around 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.