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9NM S Portsmouth NH

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 1:27 am EST Mar 7, 2026
Forecast Valid: 6am EST Mar 7, 2026-6pm EDT Mar 13, 2026

Today

Variable winds less than 5 kt becoming S 5 to 10 kt in the morning. Areas of fog before 11am. Seas 1 ft or less.

Tonight

SW wind around 10 kt. Rain likely before 3am. Patchy fog between 9pm and 10pm. Seas 1 ft or less.

Sunday

SW wind around 10 kt becoming W in the afternoon. A slight chance of rain between 7am and 11am. Seas 1 ft or less.

Sunday Night

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

Monday

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

Monday Night

SW wind 5 to 10 kt. Mostly clear. Seas 1 ft or less.

Tuesday

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

Tuesday Night

Variable winds 5 kt or less. Partly cloudy. Seas 1 ft or less.

Wednesday

E wind around 10 kt becoming SE in the afternoon. A chance of rain. 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.