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8NM SE Portsmouth NH

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 12:33 am EST Jan 9, 2026
Forecast Valid: 2am EST Jan 9, 2026-6pm EST Jan 15, 2026

Friday

S wind 5 to 10 kt increasing to 15 to 20 kt. A slight chance of showers after 5pm. Patchy freezing fog before 9am. Seas 1 ft building to 3 ft.

Friday Night

S wind 15 to 20 kt becoming W after midnight. Winds could gust as high as 30 kt. Showers likely, mainly before 10pm. Seas around 3 ft.

Saturday

W wind 10 to 15 kt becoming WNW 5 to 8 kt in the afternoon. A chance of showers, mainly after 5pm. Seas 3 ft subsiding to 1 ft.

Saturday Night

E wind 5 to 10 kt increasing to 10 to 15 kt after midnight. Winds could gust as high as 25 kt. Rain, mainly after 7pm. Seas 1 to 2 ft.

Sunday

NE wind 10 to 15 kt becoming WNW in the afternoon. Winds could gust as high as 20 kt. Rain likely, mainly before 11am. Seas around 2 ft.

Sunday Night

W wind 20 to 23 kt increasing to 22 to 25 kt after midnight. Winds could gust as high as 35 kt. A chance of rain before 8pm. Seas 2 to 3 ft.

Monday

W wind 20 to 25 kt, with gusts as high as 30 kt. Mostly sunny. Seas around 3 ft.

Monday Night

WSW wind around 15 kt, with gusts as high as 25 kt. Mostly cloudy. Seas around 2 ft.

Tuesday

SW wind around 15 kt, with gusts as high as 25 kt. 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.