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Gray/Portland, ME Local Forecast Office

25NM ENE Portsmouth NH

Marine Point Forecast

[NOTICE]
    • Tonight

      Tonight:W wind around 15 km/h. Mostly clear. Seas around 1 m.

      Low: 17 °C

      W 15km/h
      1m

    • Saturday

      Saturday:WSW wind 10 to 15 km/h becoming S 15 to 20 km/h in the afternoon. Mostly sunny. Seas around 1 m.

      High: 22 °C

      ⇑S 20km/h
      1m

    • Saturday Night

      Saturday Night:SW wind 20 to 25 km/h, with gusts as high as 35 km/h. Partly cloudy. Seas around 1 m.

      Low: 19 °C

      SW 25km/h
      1m

    • Sunday

      Sunday:SSW wind around 25 km/h, with gusts as high as 35 km/h. Mostly sunny. Seas around 1 m.

      High: 24 °C

      SSW 25km/h
      1m

    • Sunday Night

      Sunday Night:SSW wind 25 to 30 km/h, with gusts as high as 40 km/h. Mostly clear. Seas around 1 m.

      Low: 20 °C

      SSW 30km/h
      1m

    • Monday

      Monday:S wind around 25 km/h, with gusts as high as 40 km/h. Sunny. Seas around 1 m.

      High: 23 °C

      S 25km/h
      1m

    • Monday Night

      Monday Night:SW wind 25 to 30 km/h decreasing to 20 to 25 km/h after midnight. Winds could gust as high as 40 km/h. Partly cloudy. Seas around 1 m.

      Low: 18 °C

      SW 30km/h⇓
      1m

    • Tuesday

      Tuesday:SW wind around 15 km/h becoming S in the afternoon. A chance of showers, with thunderstorms also possible after 2pm.   Seas around 1 m.

      High: 21 °C

      SW 15km/h
      1m

    • Tuesday Night

      Tuesday Night:SSW wind 10 to 15 km/h becoming NNW after midnight. A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 2am.   Seas around 1 m.

      Low: 18 °C

      NW 15km/h
      1m


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 1:35 pm EDT Jul 4, 2025
Forecast Valid: 8pm EDT Jul 4, 2025-6pm EDT Jul 11, 2025

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Detailed Forecast


Tonight
W wind around 15 km/h. Mostly clear. Seas around 1 m.
Saturday
WSW wind 10 to 15 km/h becoming S 15 to 20 km/h in the afternoon. Mostly sunny. Seas around 1 m.
Saturday Night
SW wind 20 to 25 km/h, with gusts as high as 35 km/h. Partly cloudy. Seas around 1 m.
Sunday
SSW wind around 25 km/h, with gusts as high as 35 km/h. Mostly sunny. Seas around 1 m.
Sunday Night
SSW wind 25 to 30 km/h, with gusts as high as 40 km/h. Mostly clear. Seas around 1 m.
Monday
S wind around 25 km/h, with gusts as high as 40 km/h. Sunny. Seas around 1 m.
Monday Night
SW wind 25 to 30 km/h decreasing to 20 to 25 km/h after midnight. Winds could gust as high as 40 km/h. Partly cloudy. Seas around 1 m.
Tuesday
SW wind around 15 km/h becoming S in the afternoon. A chance of showers, with thunderstorms also possible after 2pm. Seas around 1 m.
Tuesday Night
SSW wind 10 to 15 km/h becoming NNW after midnight. A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 2am. Seas around 1 m.

Winds and seas higher in and near tstms.

*Notices:

  1. 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.
  2. 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.
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ABOUT THIS FORECAST

Point Forecast: 43.18°N 70.24°W
Last Update: 1:35 pm EDT Jul 4, 2025
Forecast Valid: 8pm EDT Jul 4, 2025-6pm EDT Jul 11, 2025
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