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6NM SSE Portsmouth NH

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 6:21 am EDT Sep 27, 2026
Forecast Valid: 9am EDT Sep 27, 2026-6pm EDT Oct 3, 2026

Today

NE wind 20 to 25 kt, with gusts as high as 35 kt. Rain. Seas around 9 ft.

Tonight

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

Monday

NE wind 15 to 20 kt. Rain before 2pm, then showers between 2pm and 5pm, then showers likely and possibly a thunderstorm after 5pm. Seas around 7 ft.

Monday Night

NNE wind 10 to 15 kt. Showers, mainly before 4am. Seas 5 to 6 ft.

Tuesday

N wind 5 to 10 kt. A chance of showers before 8am. Seas 4 to 5 ft.

Tuesday Night

Variable winds 5 kt or less. Mostly cloudy. Seas 3 to 4 ft.

Wednesday

Variable winds 5 kt or less. Mostly sunny. Seas around 3 ft.

Wednesday Night

Variable winds 5 kt or less. Mostly cloudy. Seas 2 to 3 ft.

Thursday

Variable winds 5 kt or less. 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.