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Gray/Portland, ME Local Forecast Office

6NM ENE Portsmouth NH

Marine Point Forecast

[NOTICE]
    • Overnight

      Overnight:S wind 5 to 10 kt. Mostly cloudy. Seas 1 ft or less building to 4 ft.

      Low: 66 °F

      S 10kt
      Waves Building4ft

    • Monday

      Monday:Variable winds 5 kt or less. A slight chance of showers before 9am, then a chance of showers and thunderstorms after 4pm.   Seas 2 to 3 ft.

      High: 71 °F

      Light Wind
      2-3ft

    • Monday Night

      Monday Night:Variable winds 5 kt or less. A chance of showers and thunderstorms before 8pm.   Seas 2 ft subsiding to 1 ft or less.

      Low: 60 °F

      Light Wind
      2ftWaves Subsiding

    • Tuesday

      Tuesday:W wind 5 to 10 kt. Sunny. Seas 1 ft or less.

      High: 73 °F

      W 10kt
      < 1ft

    • Tuesday Night

      Tuesday Night:Variable winds 5 kt or less. Mostly clear. Seas 1 ft or less.

      Low: 59 °F

      Light Wind
      < 1ft

    • Wednesday

      Wednesday:Variable winds 5 kt or less. Sunny. Seas 1 ft or less.

      High: 70 °F

      Light Wind
      < 1ft

    • Wednesday Night

      Wednesday Night:Variable winds 5 kt or less. Mostly clear. Seas 1 ft or less.

      Low: 58 °F

      Light Wind
      < 1ft

    • Thursday

      Thursday:W wind 5 to 10 kt becoming S in the afternoon. Sunny. Seas 1 ft or less.

      High: 72 °F

      S 10kt
      < 1ft

    • Thursday Night

      Thursday Night:Variable winds 5 kt or less. Partly cloudy. Seas 1 ft or less.

      Low: 60 °F

      Light Wind
      < 1ft


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 10:16 pm EDT Aug 24, 2025
Forecast Valid: 11pm EDT Aug 24, 2025-6pm EDT Aug 31, 2025

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Detailed Forecast


Overnight
S wind 5 to 10 kt. Mostly cloudy. Seas 1 ft or less building to 4 ft.
Monday
Variable winds 5 kt or less. A slight chance of showers before 9am, then a chance of showers and thunderstorms after 4pm. Seas 2 to 3 ft.
Monday Night
Variable winds 5 kt or less. A chance of showers and thunderstorms before 8pm. Seas 2 ft subsiding to 1 ft or less.
Tuesday
W wind 5 to 10 kt. Sunny. Seas 1 ft or less.
Tuesday Night
Variable winds 5 kt or less. Mostly clear. Seas 1 ft or less.
Wednesday
Variable winds 5 kt or less. Sunny. Seas 1 ft or less.
Wednesday Night
Variable winds 5 kt or less. Mostly clear. Seas 1 ft or less.
Thursday
W wind 5 to 10 kt becoming S in the afternoon. Sunny. Seas 1 ft or less.
Thursday Night
Variable winds 5 kt or less. Partly cloudy. Seas 1 ft or less.

*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: 43.08°N 70.65°W
Last Update: 10:16 pm EDT Aug 24, 2025
Forecast Valid: 11pm EDT Aug 24, 2025-6pm EDT Aug 31, 2025
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