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Gray/Portland, ME Local Forecast Office

8NM SE Portsmouth NH

Marine Point Forecast

[NOTICE]

Wednesday
High: 23 °F
WNW 15kt⇓
1-2ft
Wednesday Night
Low: 17 °F
NW 10kt
1ft
Thursday
High: 24 °F
NW 15kt
1ft
Thursday Night
Low: 13 °F
WNW 20kt
2ft
Friday
High: 20 °F
WNW 20kt
2ft
Friday Night
Low: 12 °F
WNW 15kt⇓
1-2ft
Saturday
High: 24 °F
WNW 10kt⇓
1ft
Saturday Night
Low: 20 °F
⇑NNE 25kt
3ft
Sunday
High: 29 °F
⇑N 40kt
6ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 1:13 am EST Jan 28, 2026
Forecast Valid: 3am EST Jan 28, 2026-6pm EST Feb 3, 2026

View Nearby Observations

Detailed Forecast

Wednesday

WNW wind 12 to 15 kt decreasing to 10 to 13 kt in the afternoon. Winds could gust as high as 25 kt. Widespread freezing spray before 2pm. Increasing clouds. Seas 1 to 2 ft.

Wednesday Night

WNW wind around 10 kt becoming NNW after midnight. Widespread freezing spray after midnight. Mostly cloudy. Seas around 1 ft.

Thursday

NW wind 10 to 15 kt. Widespread freezing spray. Mostly sunny. Seas around 1 ft.

Thursday Night

WNW wind around 20 kt, with gusts as high as 30 kt. Widespread freezing spray. Mostly clear. Seas around 2 ft.

Friday

WNW wind 15 to 20 kt, with gusts as high as 30 kt. Widespread freezing spray. Sunny. Seas around 2 ft.

Friday Night

WNW wind 12 to 15 kt decreasing to 10 to 13 kt after midnight. Winds could gust as high as 25 kt. Widespread freezing spray. Partly cloudy. Seas 1 to 2 ft.

Saturday

WNW wind 7 to 10 kt decreasing to 5 to 8 kt in the afternoon. Widespread freezing spray before 11am. Mostly sunny. Seas around 1 ft.

Saturday Night

NNE wind 10 to 15 kt increasing to 20 to 25 kt. Winds could gust as high as 30 kt. Widespread freezing spray after 8pm. Mostly cloudy. Seas 1 ft building to 3 ft.

Sunday

N wind 30 to 35 kt increasing to 35 to 40 kt in the afternoon. Winds could gust as high as 50 kt. A chance of snow showers. Widespread freezing spray before 1pm. Seas 4 ft building to 6 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.