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Gray/Portland, ME Local Forecast Office

3NM SE Portsmouth NH

Marine Point Forecast

[NOTICE]
    • Today

      Today:SSE wind around 10 kt becoming E in the afternoon. Winds could gust as high as 20 kt. Rain likely, with thunderstorms also possible after 5pm.   Seas 1 ft or less.

      High: 52 °F

      SSE 10kt
      < 1ft

    • Tonight

      Tonight:E wind around 15 kt, with gusts as high as 25 kt. Rain and possibly a thunderstorm.   Seas 1 ft or less.

      Low: 46 °F

      E 15kt
      < 1ft

    • Friday

      Friday:NE wind 7 to 10 kt decreasing to 5 to 8 kt in the afternoon. Winds could gust as high as 20 kt. Rain, mainly before 1pm.   Seas 1 ft or less.

      High: 50 °F

      NE 10kt⇓
      < 1ft

    • Friday Night

      Friday Night:Variable winds 5 kt or less. Cloudy during the early evening, then gradual clearing. Seas 1 ft or less.

      Low: 47 °F

      Light Wind
      < 1ft

    • Saturday

      Saturday:WSW wind 5 to 10 kt becoming SSW in the afternoon. Sunny. Seas 1 ft or less.

      High: 61 °F

      SSW 10kt
      < 1ft

    • Saturday Night

      Saturday Night:SSW wind around 10 kt, with gusts as high as 20 kt. Partly cloudy. Seas 1 ft or less.

      Low: 53 °F

      SSW 10kt
      < 1ft

    • Sunday

      Sunday:WSW wind around 10 kt. A chance of showers between 11am and 2pm.   Seas 1 ft or less.

      High: 65 °F

      WSW 10kt
      < 1ft

    • Sunday Night

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

      Low: 51 °F

      Light Wind
      < 1ft

    • Monday

      Monday:NNE wind 5 to 10 kt becoming SSE in the afternoon. Sunny. Seas 1 ft or less.

      High: 58 °F

      SSE 10kt
      < 1ft


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 6:20 am EDT May 14, 2026
Forecast Valid: 6am EDT May 14, 2026-6pm EDT May 20, 2026

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Detailed Forecast


Today
SSE wind around 10 kt becoming E in the afternoon. Winds could gust as high as 20 kt. Rain likely, with thunderstorms also possible after 5pm. Seas 1 ft or less.
Tonight
E wind around 15 kt, with gusts as high as 25 kt. Rain and possibly a thunderstorm. Seas 1 ft or less.
Friday
NE wind 7 to 10 kt decreasing to 5 to 8 kt in the afternoon. Winds could gust as high as 20 kt. Rain, mainly before 1pm. Seas 1 ft or less.
Friday Night
Variable winds 5 kt or less. Cloudy during the early evening, then gradual clearing. Seas 1 ft or less.
Saturday
WSW wind 5 to 10 kt becoming SSW in the afternoon. Sunny. Seas 1 ft or less.
Saturday Night
SSW wind around 10 kt, with gusts as high as 20 kt. Partly cloudy. Seas 1 ft or less.
Sunday
WSW wind around 10 kt. A chance of showers between 11am and 2pm. Seas 1 ft or less.
Sunday Night
Variable winds 5 kt or less. Mostly clear. Seas 1 ft or less.
Monday
NNE wind 5 to 10 kt becoming SSE in the afternoon. Sunny. 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: 43.02°N 70.73°W
Last Update: 6:20 am EDT May 14, 2026
Forecast Valid: 6am EDT May 14, 2026-6pm EDT May 20, 2026
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