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5NM SSE Portsmouth NH

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 9:34 am EDT Sep 30, 2025
Forecast Valid: 10am EDT Sep 30, 2025-6pm EDT Oct 6, 2025

Today

ENE wind 5 to 10 kt. Mostly sunny. Seas 2 to 3 ft.

Tonight

NNE wind 5 to 10 kt increasing to 10 to 15 kt after midnight. Mostly clear. Seas around 3 ft.

Wednesday

NNE wind 10 to 15 kt. Sunny. Seas 3 to 4 ft.

Wednesday Night

NNE wind 10 to 15 kt, with gusts as high as 20 kt. Mostly clear. Seas around 4 ft.

Thursday

NNE wind 5 to 10 kt becoming ENE in the afternoon. Sunny. Seas around 4 ft.

Thursday Night

Variable winds 5 kt or less. Mostly clear. Seas around 4 ft.

Friday

Variable winds 5 kt or less. Sunny. Seas around 3 ft.

Friday Night

Variable winds 5 kt or less. Clear. Seas around 2 ft.

Saturday

Variable winds 5 kt or less. 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.