National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

For More Weather Information:

Gray/Portland, ME Local Forecast Office

9NM ESE Portsmouth NH

Marine Point Forecast

[NOTICE]

    • Tonight

      Tonight:S wind 15 to 20 kt becoming WNW 25 to 30 kt after midnight. Winds could gust as high as 45 kt. Rain likely, mainly before 1am. Seas 2 ft building to 4 ft.

      Low: 45 °F

      ⇑WNW 30kt
      Waves Building4ft

    • Thursday

      Thursday:WNW wind 20 to 25 kt, with gusts as high as 35 kt. Sunny. Seas around 3 ft.

      High: 48 °F

      WNW 25kt
      3ft

    • Thursday Night

      Thursday Night:WNW wind 12 to 15 kt decreasing to 10 to 13 kt after midnight. Winds could gust as high as 25 kt. Mostly clear. Seas 1 to 2 ft.

      Low: 38 °F

      WNW 15kt⇓
      1-2ft

    • Friday

      Friday:W wind 10 to 15 kt becoming S 15 to 20 kt in the afternoon. Increasing clouds. Seas 1 to 2 ft.

      High: 54 °F

      ⇑S 20kt
      1-2ft

    • Friday Night

      Friday Night:SSW wind 15 to 20 kt, with gusts as high as 30 kt. Showers, mainly after 9pm. Seas around 3 ft.

      Low: 52 °F

      SSW 20kt
      3ft

    • Saturday

      Saturday:SW wind 10 to 15 kt becoming W in the afternoon. Showers likely before 2pm. Seas 2 to 3 ft.

      High: 58 °F

      SW 15kt
      2-3ft

    • Saturday Night

      Saturday Night:WNW wind 5 to 10 kt becoming ENE after midnight. Partly cloudy. Seas around 2 ft.

      Low: 47 °F

      WNW 10kt
      2ft

    • Sunday

      Sunday:E wind 10 to 15 kt becoming ESE in the afternoon. Showers likely. Seas 1 to 2 ft.

      High: 53 °F

      ESE 15kt
      1-2ft

    • Sunday Night

      Sunday Night:ESE wind around 15 kt becoming W after midnight. Winds could gust as high as 20 kt. Showers likely. Seas 2 to 3 ft.

      Low: 44 °F

      SE 15kt
      2-3ft


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 6:47 pm EST Nov 5, 2025
Forecast Valid: 8pm EST Nov 5, 2025-6pm EST Nov 12, 2025

View Nearby Observations

Detailed Forecast


Tonight
S wind 15 to 20 kt becoming WNW 25 to 30 kt after midnight. Winds could gust as high as 45 kt. Rain likely, mainly before 1am. Seas 2 ft building to 4 ft.
Thursday
WNW wind 20 to 25 kt, with gusts as high as 35 kt. Sunny. Seas around 3 ft.
Thursday Night
WNW wind 12 to 15 kt decreasing to 10 to 13 kt after midnight. Winds could gust as high as 25 kt. Mostly clear. Seas 1 to 2 ft.
Friday
W wind 10 to 15 kt becoming S 15 to 20 kt in the afternoon. Increasing clouds. Seas 1 to 2 ft.
Friday Night
SSW wind 15 to 20 kt, with gusts as high as 30 kt. Showers, mainly after 9pm. Seas around 3 ft.
Saturday
SW wind 10 to 15 kt becoming W in the afternoon. Showers likely before 2pm. Seas 2 to 3 ft.
Saturday Night
WNW wind 5 to 10 kt becoming ENE after midnight. Partly cloudy. Seas around 2 ft.
Sunday
E wind 10 to 15 kt becoming ESE in the afternoon. Showers likely. Seas 1 to 2 ft.
Sunday Night
ESE wind around 15 kt becoming W after midnight. Winds could gust as high as 20 kt. Showers likely. Seas 2 to 3 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.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

Point Forecast: 42.99°N 70.62°W
Last Update: 6:47 pm EST Nov 5, 2025
Forecast Valid: 8pm EST Nov 5, 2025-6pm EST Nov 12, 2025
  Forecast Discussion
  Get as KML Get as XML

RADAR & SATELLITE IMAGES

 Link to Satellite Data