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Gray/Portland, ME Local Forecast Office

8NM SE Portsmouth NH

Marine Point Forecast

[NOTICE]
    • Tonight

      Tonight:S wind 5 to 10 kt becoming NNW after midnight. Cloudy during the early evening, then gradual clearing. Seas around 2 ft.

      Low: 44 °F

      S 10kt
      2ft

    • Tuesday

      Tuesday:NNW wind 5 to 10 kt becoming SSE in the afternoon. Sunny. Seas around 2 ft.

      High: 51 °F

      NNW 10kt
      2ft

    • Tuesday Night

      Tuesday Night:SSW wind 5 to 10 kt becoming N after midnight. Increasing clouds. Seas 1 to 2 ft.

      Low: 44 °F

      SSW 10kt
      1-2ft

    • Wednesday

      Wednesday:ESE wind 5 to 8 kt becoming SSE 10 to 15 kt in the afternoon. Winds could gust as high as 20 kt. A chance of showers after 10am.   Seas 1 to 2 ft.

      High: 51 °F

      ⇑SSE 15kt
      1-2ft

    • Wednesday Night

      Wednesday Night:S wind around 20 kt, with gusts as high as 25 kt. Rain.   Seas around 3 ft.

      Low: 48 °F

      S 20kt
      3ft

    • Thursday

      Thursday:SE wind 15 to 20 kt. Rain.   Seas 3 to 4 ft.

      High: 51 °F

      SE 20kt
      3-4ft

    • Thursday Night

      Thursday Night:E wind around 10 kt becoming NE after midnight. Showers.   Seas 2 to 3 ft.

      Low: 50 °F

      NE 10kt
      2-3ft

    • Friday

      Friday:N wind 5 to 10 kt. A chance of showers.   Seas 2 to 3 ft.

      High: 53 °F

      N 10kt
      2-3ft

    • Friday Night

      Friday Night:WNW wind 5 to 10 kt. A chance of showers.   Seas around 2 ft.

      Low: 51 °F

      WNW 10kt
      2ft


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 2:20 pm EDT May 11, 2026
Forecast Valid: 5pm EDT May 11, 2026-6pm EDT May 18, 2026

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Detailed Forecast


Tonight
S wind 5 to 10 kt becoming NNW after midnight. Cloudy during the early evening, then gradual clearing. Seas around 2 ft.
Tuesday
NNW wind 5 to 10 kt becoming SSE in the afternoon. Sunny. Seas around 2 ft.
Tuesday Night
SSW wind 5 to 10 kt becoming N after midnight. Increasing clouds. Seas 1 to 2 ft.
Wednesday
ESE wind 5 to 8 kt becoming SSE 10 to 15 kt in the afternoon. Winds could gust as high as 20 kt. A chance of showers after 10am. Seas 1 to 2 ft.
Wednesday Night
S wind around 20 kt, with gusts as high as 25 kt. Rain. Seas around 3 ft.
Thursday
SE wind 15 to 20 kt. Rain. Seas 3 to 4 ft.
Thursday Night
E wind around 10 kt becoming NE after midnight. Showers. Seas 2 to 3 ft.
Friday
N wind 5 to 10 kt. A chance of showers. Seas 2 to 3 ft.
Friday Night
WNW wind 5 to 10 kt. A chance of showers. Seas around 2 ft.

*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: 2:20 pm EDT May 11, 2026
Forecast Valid: 5pm EDT May 11, 2026-6pm EDT May 18, 2026
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