For More Weather Information:

10NM S Portsmouth NH

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 12:33 am EST Nov 15, 2025
Forecast Valid: 5am EST Nov 15, 2025-6pm EST Nov 21, 2025

Today

WNW wind around 10 kt becoming W in the afternoon. Increasing clouds. Seas around 1 ft.

Tonight

SW wind 10 to 13 kt becoming S 12 to 15 kt after midnight. Winds could gust as high as 25 kt. Rain, mainly before 5am. Seas 1 to 2 ft.

Sunday

W wind 10 to 15 kt increasing to 15 to 20 kt in the afternoon. Winds could gust as high as 30 kt. A chance of rain before 7am. Seas 1 to 2 ft.

Sunday Night

W wind around 20 kt, with gusts as high as 30 kt. Mostly cloudy. Seas around 1 ft.

Monday

W wind around 20 kt, with gusts as high as 30 kt. Mostly sunny. Seas around 1 ft.

Monday Night

W wind 15 to 20 kt, with gusts as high as 25 kt. Mostly clear. Seas around 1 ft.

Tuesday

W wind around 15 kt, with gusts as high as 25 kt. Sunny. Seas around 1 ft.

Tuesday Night

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

Wednesday

Variable winds 5 kt or less. Sunny. Seas around 1 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.