For More Weather Information:

3NM SE Portsmouth NH

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 5:27 am EDT May 15, 2026
Forecast Valid: 9am EDT May 15, 2026-6pm EDT May 21, 2026

Today

NE wind 7 to 10 kt decreasing to 5 to 8 kt in the afternoon. Winds could gust as high as 20 kt. Rain likely, mainly before 3pm. Seas 1 ft or less.

Tonight

WSW wind 5 to 10 kt. Partly cloudy. Seas 1 ft or less.

Saturday

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

Saturday Night

SSW wind 10 to 15 kt, with gusts as high as 25 kt. Partly cloudy. Seas 1 ft or less.

Sunday

W wind around 10 kt. Sunny. Seas 1 ft or less.

Sunday Night

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

Monday

Variable winds less than 5 kt becoming SSE 5 to 10 kt in the afternoon. Mostly sunny. Seas 1 ft or less.

Monday Night

S wind 5 to 10 kt becoming SW after midnight. Mostly clear. Seas 1 ft or less.

Tuesday

SW 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.