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Gray/Portland, ME Local Forecast Office

8NM SE Portsmouth NH

Marine Point Forecast

[NOTICE]

Today
High: 46 °F
S 15kt
2-3ft
Tonight
Low: 41 °F
S 10kt
1-2ft
Thursday
High: 44 °F
⇑WSW 20kt
2-3ft
Thursday Night
Low: 21 °F
W 20kt
3-4ft
Friday
High: 33 °F
W 20kt
2-3ft
Friday Night
Low: 31 °F
SW 15kt
3ft
Saturday
High: 41 °F
SSW 15kt
3ft
Saturday Night
Low: 33 °F
SSW 10kt
2-3ft
Sunday
High: 35 °F
WSW 15kt
2ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 6:13 am EST Jan 14, 2026
Forecast Valid: 8am EST Jan 14, 2026-6pm EST Jan 20, 2026

View Nearby Observations

Detailed Forecast

Today

S wind 10 to 15 kt, with gusts as high as 25 kt. A slight chance of showers before 2pm, then a slight chance of showers after 4pm. Seas 2 to 3 ft.

Tonight

S wind around 10 kt. Showers likely, mainly after 3am. Areas of fog after 3am. Seas 1 to 2 ft.

Thursday

WSW wind 10 to 15 kt becoming WSW 15 to 20 kt in the afternoon. Winds could gust as high as 25 kt. A chance of showers, mainly before 11am. Areas of fog before 9am. Seas 2 to 3 ft.

Thursday Night

W wind around 20 kt, with gusts as high as 30 kt. Partly cloudy. Seas 3 to 4 ft.

Friday

W wind 15 to 20 kt, with gusts as high as 30 kt. Sunny. Seas 2 to 3 ft.

Friday Night

SW wind around 15 kt, with gusts as high as 20 kt. Mostly cloudy. Seas around 3 ft.

Saturday

SSW wind 10 to 15 kt. A chance of rain after 4pm. Seas around 3 ft.

Saturday Night

SSW wind around 10 kt becoming WSW after midnight. Mostly cloudy. Seas 2 to 3 ft.

Sunday

WSW wind 10 to 15 kt. Mostly cloudy. 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.