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4NM E Portsmouth NH

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 1:45 am EDT Oct 11, 2026
Forecast Valid: 6am EDT Oct 11, 2026-6pm EDT Oct 17, 2026

Today

Variable winds less than 5 kt becoming S 5 to 10 kt in the afternoon. Increasing clouds. Seas around 1 ft.

Tonight

Variable winds 5 kt or less. Showers, mainly before 5am. Areas of fog after 2am. Seas around 1 ft.

Columbus Day

Variable winds 5 kt or less. A chance of showers, mainly between 7am and 8am. Areas of fog before 8am. Seas around 1 ft.

Monday Night

Variable winds less than 5 kt becoming NE 10 to 15 kt after midnight. Increasing clouds. Seas around 1 ft.

Tuesday

E wind around 10 kt becoming SE in the afternoon. Rain likely, mainly after 4pm. Seas around 2 ft.

Tuesday Night

S wind around 10 kt becoming SSW after midnight. Rain. Seas around 2 ft.

Wednesday

W wind around 10 kt becoming WNW in the afternoon. Showers likely before 8am. Seas around 2 ft.

Wednesday Night

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

Thursday

NW wind around 10 kt. 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.