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6NM SSE Portsmouth NH

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 3:08 pm EDT Mar 13, 2026
Forecast Valid: 4pm EDT Mar 13, 2026-6pm EDT Mar 20, 2026

Tonight

S wind 10 to 15 kt. Rain, possibly mixed with snow before 3am, then a chance of rain. Seas 2 ft building to 4 ft.

Saturday

W wind 10 to 15 kt, with gusts as high as 25 kt. Mostly sunny. Seas 3 to 4 ft.

Saturday Night

WNW wind 10 to 15 kt, with gusts as high as 25 kt. Mostly clear. Seas around 2 ft.

Sunday

Variable winds 5 kt or less. Partly sunny. Seas around 1 ft.

Sunday Night

SSE wind around 10 kt. Mostly cloudy. Seas 1 ft building to 3 ft.

Monday

SSE wind 15 to 20 kt, with gusts as high as 30 kt. Rain, mainly after 9am. Seas 5 ft building to 8 ft.

Monday Night

S wind around 20 kt, with gusts as high as 30 kt. Rain. Seas 9 to 10 ft.

Tuesday

WSW wind around 15 kt, with gusts as high as 25 kt. Rain likely. Seas 10 ft subsiding to 6 ft.

Tuesday Night

W wind around 15 kt, with gusts as high as 25 kt. Mostly clear. Seas around 5 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.