For More Weather Information:

Gray/Portland, ME Local Forecast Office

6NM SSE Portsmouth NH

Marine Point Forecast

[NOTICE]

Today
High: 38 °F
NW 15kt
2ft
Tonight
Low: 27 °F
Light Wind
1ft
Tuesday
High: 39 °F
ENE 10kt
1ft
Tuesday Night
Low: 30 °F
NNE 15kt
3ft
Wednesday
High: 37 °F
NW 10kt⇓
3-4ft
Wednesday Night
Low: 31 °F
SW 10kt
4ft
Thursday
High: 38 °F
⇑W 20kt
3ft
Thursday Night
Low: 13 °F
WNW 20kt⇓
2-3ft
Friday
High: 28 °F
WNW 10kt
1-2ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 11:07 am EST Dec 1, 2025
Forecast Valid: 11am EST Dec 1, 2025-6pm EST Dec 7, 2025

View Nearby Observations

Detailed Forecast

Today

NW wind 10 to 15 kt, with gusts as high as 25 kt. Sunny. Seas around 2 ft.

Tonight

Variable winds 5 kt or less. Increasing clouds. Seas around 1 ft.

Tuesday

SW wind 5 to 10 kt becoming ENE in the afternoon. Snow likely before 11am, then rain and snow likely between 11am and 1pm, then rain after 1pm. Seas around 1 ft.

Tuesday Night

NE wind around 15 kt becoming NNW after midnight. Winds could gust as high as 25 kt. Rain and snow, mainly before 1am. Seas 1 ft building to 3 ft.

Wednesday

NW wind 7 to 10 kt becoming W 5 to 8 kt in the afternoon. Mostly sunny. Seas 3 to 4 ft.

Wednesday Night

SW wind 5 to 10 kt. Mostly cloudy. Seas around 4 ft.

Thursday

SW wind 10 to 15 kt becoming W 15 to 20 kt in the afternoon. A chance of snow showers between noon and 4pm. Seas around 3 ft.

Thursday Night

WNW wind 15 to 20 kt decreasing to 10 to 15 kt after midnight. Winds could gust as high as 25 kt. Mostly clear. Seas 2 to 3 ft.

Friday

WNW wind around 10 kt becoming WSW in the afternoon. Sunny. Seas 1 to 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.