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

20NM ENE Portsmouth NH

Marine Point Forecast

[NOTICE]

    • Tonight

      Tonight:SW wind 10 to 15 kt. Mostly clear. Seas 3 to 4 ft.

      Low: 68 °F

      SW 15kt
      3-4ft

    • Monday

      Monday:S wind 10 to 15 kt, with gusts as high as 25 kt. Mostly sunny. Seas around 3 ft.

      High: 75 °F

      S 15kt
      3ft

    • Monday Night

      Monday Night:SSW wind 10 to 15 kt, with gusts as high as 20 kt. A slight chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Seas around 3 ft.

      Low: 67 °F

      SSW 15kt
      3ft

    • Tuesday

      Tuesday:SSW wind 5 to 10 kt becoming E in the afternoon. Showers likely and possibly a thunderstorm, mainly after 2pm. Seas 2 to 3 ft.

      High: 72 °F

      SSW 10kt
      2-3ft

    • Tuesday Night

      Tuesday Night:Variable winds 5 kt or less. Showers likely and possibly a thunderstorm before 8pm, then a chance of showers between 8pm and 2am. Seas around 2 ft.

      Low: 64 °F

      Light Wind
      2ft

    • Wednesday

      Wednesday:Variable winds 5 kt or less. Mostly cloudy. Seas around 2 ft.

      High: 67 °F

      Light Wind
      2ft

    • Wednesday Night

      Wednesday Night:Variable winds 5 kt or less. Mostly cloudy. Seas around 2 ft.

      Low: 62 °F

      Light Wind
      2ft

    • Thursday

      Thursday:Variable winds 5 kt or less. A chance of showers. Seas around 2 ft.

      High: 66 °F

      Light Wind
      2ft

    • Thursday Night

      Thursday Night:Variable winds 5 kt or less. A chance of showers. Seas around 2 ft.

      Low: 62 °F

      Light Wind
      2ft


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 1:57 pm EDT Jul 6, 2025
Forecast Valid: 7pm EDT Jul 6, 2025-6pm EDT Jul 13, 2025

View Nearby Observations

Detailed Forecast


Tonight
SW wind 10 to 15 kt. Mostly clear. Seas 3 to 4 ft.
Monday
S wind 10 to 15 kt, with gusts as high as 25 kt. Mostly sunny. Seas around 3 ft.
Monday Night
SSW wind 10 to 15 kt, with gusts as high as 20 kt. A slight chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Seas around 3 ft.
Tuesday
SSW wind 5 to 10 kt becoming E in the afternoon. Showers likely and possibly a thunderstorm, mainly after 2pm. Seas 2 to 3 ft.
Tuesday Night
Variable winds 5 kt or less. Showers likely and possibly a thunderstorm before 8pm, then a chance of showers between 8pm and 2am. Seas around 2 ft.
Wednesday
Variable winds 5 kt or less. Mostly cloudy. Seas around 2 ft.
Wednesday Night
Variable winds 5 kt or less. Mostly cloudy. Seas around 2 ft.
Thursday
Variable winds 5 kt or less. A chance of showers. Seas around 2 ft.
Thursday Night
Variable winds 5 kt or less. A chance of showers. Seas around 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.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

Point Forecast: 43.17°N 70.36°W
Last Update: 1:57 pm EDT Jul 6, 2025
Forecast Valid: 7pm EDT Jul 6, 2025-6pm EDT Jul 13, 2025
  Forecast Discussion
  Get as KML Get as XML

RADAR & SATELLITE IMAGES

 Link to Satellite Data