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Gray/Portland, ME Local Forecast Office

14NM NE Portsmouth NH

Marine Point Forecast

[NOTICE]
    • Thursday

      Thursday:N wind 10 to 15 km/h becoming NE 5 to 8 km/h in the morning. Mostly cloudy. Seas 1 m or less.

      High: 15 °C

      N 15km/h⇓
      < 1m

    • Thursday Night

      Thursday Night:S wind 5 to 10 km/h becoming N after midnight. Mostly cloudy, then gradually becoming mostly clear. Seas 1 m or less.

      Low: 5 °C

      N 10km/h
      < 1m

    • Friday

      Friday:N wind 10 to 15 km/h becoming SSE in the afternoon. Sunny. Seas 1 m or less.

      High: 14 °C

      SSE 15km/h
      < 1m

    • Friday Night

      Friday Night:S wind 5 to 10 km/h becoming W after midnight. Increasing clouds. Seas 1 m or less.

      Low: 6 °C

      S 10km/h
      < 1m

    • Saturday

      Saturday:NNE wind 5 to 10 km/h becoming SE in the afternoon. Mostly cloudy. Seas 1 m or less.

      High: 14 °C

      E 10km/h
      < 1m

    • Saturday Night

      Saturday Night:Variable winds 5 km/h or less. A chance of showers after 3am.   Seas 1 m or less.

      Low: 8 °C

      Light Wind
      < 1m

    • Sunday

      Sunday:ESE wind 10 to 15 km/h. Showers likely, mainly after 11am.   Seas 1 m or less.

      High: 11 °C

      ESE 15km/h
      < 1m

    • Sunday Night

      Sunday Night:E wind 10 to 15 km/h. Showers likely.   Seas 1 m or less.

      Low: 8 °C

      E 15km/h
      < 1m

    • Memorial Day

      Memorial Day:ENE wind around 10 km/h becoming N in the afternoon. A chance of showers.   Seas 1 m or less.

      High: 16 °C

      ENE 10km/h
      < 1m


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 2:35 am EDT May 21, 2026
Forecast Valid: 3am EDT May 21, 2026-6pm EDT May 27, 2026

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Detailed Forecast


Thursday
N wind 10 to 15 km/h becoming NE 5 to 8 km/h in the morning. Mostly cloudy. Seas 1 m or less.
Thursday Night
S wind 5 to 10 km/h becoming N after midnight. Mostly cloudy, then gradually becoming mostly clear. Seas 1 m or less.
Friday
N wind 10 to 15 km/h becoming SSE in the afternoon. Sunny. Seas 1 m or less.
Friday Night
S wind 5 to 10 km/h becoming W after midnight. Increasing clouds. Seas 1 m or less.
Saturday
NNE wind 5 to 10 km/h becoming SE in the afternoon. Mostly cloudy. Seas 1 m or less.
Saturday Night
Variable winds 5 km/h or less. A chance of showers after 3am. Seas 1 m or less.
Sunday
ESE wind 10 to 15 km/h. Showers likely, mainly after 11am. Seas 1 m or less.
Sunday Night
E wind 10 to 15 km/h. Showers likely. Seas 1 m or less.
Memorial Day
ENE wind around 10 km/h becoming N in the afternoon. A chance of showers. Seas 1 m 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: 43.25°N 70.58°W
Last Update: 2:35 am EDT May 21, 2026
Forecast Valid: 3am EDT May 21, 2026-6pm EDT May 27, 2026
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