For More Weather Information:

6NM SSE Portsmouth NH

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 6:28 pm EDT Sep 23, 2026
Forecast Valid: 6pm EDT Sep 23, 2026-6pm EDT Sep 30, 2026

Tonight

ENE wind 5 to 10 kt. Mostly clear. Seas 4 to 5 ft.

Thursday

NE wind 10 to 15 kt. Sunny. Seas around 5 ft.

Thursday Night

NNE wind 5 to 8 kt increasing to 7 to 10 kt after midnight. Increasing clouds. Seas around 6 ft.

Friday

NE wind 15 to 20 kt. A chance of showers after 3pm. Seas 6 ft building to 8 ft.

Friday Night

NNE wind 20 to 25 kt, with gusts as high as 30 kt. Rain likely, mainly after 10pm. Seas 8 to 9 ft.

Saturday

NNE wind around 20 kt, with gusts as high as 30 kt. Rain. Seas around 9 ft.

Saturday Night

N wind around 20 kt, with gusts as high as 30 kt. Rain. Seas around 9 ft.

Sunday

NNE wind around 20 kt, with gusts as high as 30 kt. Rain. Seas around 8 ft.

Sunday Night

NNE wind 15 to 20 kt. Rain. Seas around 7 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.