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6NM SSE Portsmouth NH

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 7:55 pm EDT May 12, 2026
Forecast Valid: 11pm EDT May 12, 2026-6pm EDT May 19, 2026

Overnight

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

Wednesday

SSE wind 5 to 8 kt increasing to 7 to 10 kt in the afternoon. A chance of showers, mainly between 11am and 3pm. Seas around 2 ft.

Wednesday Night

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

Thursday

ESE wind around 10 kt. Rain, mainly after 10am. Seas around 3 ft.

Thursday Night

NE wind around 10 kt. Rain. Seas around 3 ft.

Friday

NE wind around 10 kt. Showers, mainly before 2pm. Seas around 3 ft.

Friday Night

Variable winds 5 kt or less. A chance of showers before 9pm. Seas around 3 ft.

Saturday

W wind 5 to 10 kt becoming SW in the afternoon. Mostly sunny. Seas around 4 ft.

Saturday Night

WSW wind around 10 kt. Mostly clear. 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.