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3NM SE Portsmouth NH

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 1:18 am EDT Oct 7, 2026
Forecast Valid: 2am EDT Oct 7, 2026-6pm EDT Oct 13, 2026

Wednesday

W wind 5 to 8 kt becoming SSW 7 to 10 kt in the afternoon. Sunny. Seas 1 ft or less.

Wednesday Night

SSW wind around 10 kt, with gusts as high as 20 kt. Mostly clear. Seas 1 ft or less.

Thursday

SSW wind around 10 kt becoming W in the afternoon. A slight chance of showers between 9am and 11am. Seas 1 ft or less.

Thursday Night

Variable winds 5 kt or less. Clear. Seas 1 ft or less.

Friday

W wind around 10 kt, with gusts as high as 20 kt. Sunny. Seas 1 ft or less.

Friday Night

Variable winds 5 kt or less. Mostly clear. Seas 1 ft or less.

Saturday

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

Saturday Night

Variable winds 5 kt or less. Mostly clear. Seas 1 ft or less.

Sunday

SSW wind 5 to 10 kt. Mostly sunny. Seas 1 ft or less.

*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.