For More Weather Information:

Gray/Portland, ME Local Forecast Office

6NM SSE Portsmouth NH

Marine Point Forecast

[NOTICE]

Tonight
Low: 60 °F
W 10kt
1ft
Monday
High: 76 °F
Light Wind
1ft
Monday Night
Low: 63 °F
Light Wind
1ft
Tuesday
High: 72 °F
⇑SSE 15kt
1-2ft
Tuesday Night
Low: 65 °F
SE 10kt
2-3ft
Wednesday
High: 77 °F
SSW 10kt
3ft
Wednesday Night
Low: 62 °F
WSW 10kt
3ft
Thursday
High: 74 °F
Light Wind
2ft
Thursday Night
Low: 61 °F
Light Wind
2ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 6:16 pm EDT Jul 19, 2026
Forecast Valid: 9pm EDT Jul 19, 2026-6pm EDT Jul 26, 2026

View Nearby Observations

Detailed Forecast

Tonight

W wind 5 to 10 kt. Mostly clear. Seas around 1 ft.

Monday

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

Monday Night

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

Tuesday

SSE wind 5 to 10 kt increasing to 10 to 15 kt in the afternoon. A chance of showers and thunderstorms after 5pm. Seas 1 to 2 ft.

Tuesday Night

SE wind around 10 kt. Showers and thunderstorms likely before 10pm, then showers and possibly a thunderstorm between 10pm and 11pm, then showers after 11pm. Seas 2 to 3 ft.

Wednesday

SSW wind 5 to 10 kt. Showers likely, then showers and possibly a thunderstorm after 11am. Seas around 3 ft.

Wednesday Night

WSW wind 5 to 10 kt becoming W after midnight. Showers likely, mainly before 8pm. Seas around 3 ft.

Thursday

Variable winds 5 kt or less. Mostly sunny. Seas around 2 ft.

Thursday Night

Variable winds 5 kt or less. Partly cloudy. Seas around 2 ft.

Winds and seas higher in and near tstms.

*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.