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Gray/Portland, ME Local Forecast Office

8NM SE Portsmouth NH

Marine Point Forecast

[NOTICE]

Overnight
Low: 49 °F
Light Wind
1ft
Sunday
High: 52 °F
SE 10kt
1-2ft
Sunday Night
Low: 50 °F
E 15kt
2-3ft
Memorial Day
High: 58 °F
Light Wind
3-4ft
Monday Night
Low: 52 °F
Light Wind
2-3ft
Tuesday
High: 65 °F
⇑S 10kt
2ft
Tuesday Night
Low: 56 °F
SSW 10kt
2ft
Wednesday
High: 67 °F
W 10kt
1-2ft
Wednesday Night
Low: 53 °F
WSW 10kt
1ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 7:31 pm EDT May 23, 2026
Forecast Valid: 12am EDT May 24, 2026-6pm EDT May 30, 2026

View Nearby Observations

Detailed Forecast

Overnight

Variable winds 5 kt or less. Cloudy. Seas around 1 ft.

Sunday

SE wind around 10 kt. Rain, mainly after 10am. Seas 1 to 2 ft.

Sunday Night

E wind 10 to 15 kt, with gusts as high as 20 kt. Rain before 2am, then rain and possibly a thunderstorm between 2am and 5am, then showers likely and possibly a thunderstorm after 5am. Seas 2 to 3 ft.

Memorial Day

Variable winds 5 kt or less. Showers likely, mainly before 9am. Seas 3 to 4 ft.

Monday Night

Variable winds 5 kt or less. Mostly cloudy. Seas 2 to 3 ft.

Tuesday

WSW wind 5 to 8 kt becoming S 7 to 10 kt in the afternoon. Mostly sunny. Seas around 2 ft.

Tuesday Night

SSW wind around 10 kt becoming WSW after midnight. Partly cloudy. Seas around 2 ft.

Wednesday

W wind around 10 kt becoming S in the afternoon. Mostly sunny. Seas 1 to 2 ft.

Wednesday Night

WSW wind 5 to 10 kt becoming N after midnight. A chance of showers. Seas around 1 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.