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Gray/Portland, ME Local Forecast Office

8NM SE Portsmouth NH

Marine Point Forecast

[NOTICE]

    • Wednesday

      Wednesday:WNW wind around 10 kt. A slight chance of showers and thunderstorms before 8am. Seas 1 to 2 ft.

      High: 81 °F

      WNW 10kt
      1-2ft

    • Wednesday Night

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

      Low: 74 °F

      W 10kt
      1ft

    • Thursday

      Thursday:WSW wind 5 to 10 kt. Sunny. Seas around 1 ft.

      High: 81 °F

      WSW 10kt
      1ft

    • Thursday Night

      Thursday Night:WNW wind 5 to 10 kt. Partly cloudy. Seas around 1 ft.

      Low: 67 °F

      WNW 10kt
      1ft

    • Friday

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

      High: 76 °F

      Light Wind
      1ft

    • Friday Night

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

      Low: 65 °F

      Light Wind
      1ft

    • Saturday

      Saturday:W wind 5 to 10 kt becoming S in the morning. A chance of showers after noon. Seas around 1 ft.

      High: 72 °F

      S 10kt
      1ft

    • Saturday Night

      Saturday Night:S wind 5 to 10 kt. A chance of showers and thunderstorms before 9pm, then showers likely and possibly a thunderstorm between 9pm and 2am, then showers likely after 2am. Seas 1 to 2 ft.

      Low: 64 °F

      S 10kt
      1-2ft

    • Sunday

      Sunday:Variable winds 5 kt or less. A chance of showers. Seas 1 to 2 ft.

      High: 73 °F

      Light Wind
      1-2ft


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 5:44 pm EDT Jul 14, 2026
Forecast Valid: 1am EDT Jul 15, 2026-6pm EDT Jul 21, 2026

View Nearby Observations

Detailed Forecast


Wednesday
WNW wind around 10 kt. A slight chance of showers and thunderstorms before 8am. Seas 1 to 2 ft.
Wednesday Night
W wind 5 to 10 kt. Mostly clear. Seas around 1 ft.
Thursday
WSW wind 5 to 10 kt. Sunny. Seas around 1 ft.
Thursday Night
WNW wind 5 to 10 kt. Partly cloudy. Seas around 1 ft.
Friday
Variable winds 5 kt or less. Sunny. Seas around 1 ft.
Friday Night
Variable winds 5 kt or less. Partly cloudy. Seas around 1 ft.
Saturday
W wind 5 to 10 kt becoming S in the morning. A chance of showers after noon. Seas around 1 ft.
Saturday Night
S wind 5 to 10 kt. A chance of showers and thunderstorms before 9pm, then showers likely and possibly a thunderstorm between 9pm and 2am, then showers likely after 2am. Seas 1 to 2 ft.
Sunday
Variable winds 5 kt or less. A chance of showers. Seas 1 to 2 ft.

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: 42.99°N 70.62°W
Last Update: 5:44 pm EDT Jul 14, 2026
Forecast Valid: 1am EDT Jul 15, 2026-6pm EDT Jul 21, 2026
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