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

For More Weather Information:

Gray/Portland, ME Local Forecast Office

8NM SE Portsmouth NH

Marine Point Forecast

[NOTICE]

    • Tonight

      Tonight:Variable winds 5 kt or less. Mostly cloudy. Seas 1 to 2 ft.

      Low: 56 °F

      Light Wind
      1-2ft

    • Saturday

      Saturday:Variable winds 5 kt or less. A slight chance of showers between 2pm and 5pm, then a slight chance of showers and thunderstorms after 5pm. Seas around 2 ft.

      High: 62 °F

      Light Wind
      2ft

    • Saturday Night

      Saturday Night:SSE wind 5 to 10 kt becoming NE in the evening. A chance of showers and thunderstorms before 1am, then a slight chance of showers between 1am and 2am. Seas around 2 ft.

      Low: 59 °F

      SW 10kt
      2ft

    • Sunday

      Sunday:WSW wind 5 to 10 kt becoming WNW in the afternoon. Showers, mainly after 3pm. Seas around 2 ft.

      High: 68 °F

      WSW 10kt
      2ft

    • Sunday Night

      Sunday Night:N wind 10 to 15 kt. Showers likely before 8pm. Seas around 2 ft.

      Low: 55 °F

      N 15kt
      2ft

    • Monday

      Monday:N wind 10 to 15 kt becoming SE 5 to 8 kt in the afternoon. Sunny. Seas 1 to 2 ft.

      High: 62 °F

      N 15kt⇓
      1-2ft

    • Monday Night

      Monday Night:Variable winds 5 kt or less. Mostly clear. Seas 1 to 2 ft.

      Low: 56 °F

      Light Wind
      1-2ft

    • Tuesday

      Tuesday:Variable winds 5 kt or less. Sunny. Seas around 1 ft.

      High: 67 °F

      Light Wind
      1ft

    • Tuesday Night

      Tuesday Night:SSW wind 5 to 10 kt becoming W after midnight. Mostly clear. Seas around 1 ft.

      Low: 59 °F

      SSW 10kt
      1ft


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 2:29 pm EDT Jun 5, 2026
Forecast Valid: 8pm EDT Jun 5, 2026-6pm EDT Jun 12, 2026

View Nearby Observations

Detailed Forecast


Tonight
Variable winds 5 kt or less. Mostly cloudy. Seas 1 to 2 ft.
Saturday
Variable winds 5 kt or less. A slight chance of showers between 2pm and 5pm, then a slight chance of showers and thunderstorms after 5pm. Seas around 2 ft.
Saturday Night
SSE wind 5 to 10 kt becoming NE in the evening. A chance of showers and thunderstorms before 1am, then a slight chance of showers between 1am and 2am. Seas around 2 ft.
Sunday
WSW wind 5 to 10 kt becoming WNW in the afternoon. Showers, mainly after 3pm. Seas around 2 ft.
Sunday Night
N wind 10 to 15 kt. Showers likely before 8pm. Seas around 2 ft.
Monday
N wind 10 to 15 kt becoming SE 5 to 8 kt in the afternoon. Sunny. Seas 1 to 2 ft.
Monday Night
Variable winds 5 kt or less. Mostly clear. Seas 1 to 2 ft.
Tuesday
Variable winds 5 kt or less. Sunny. Seas around 1 ft.
Tuesday Night
SSW wind 5 to 10 kt becoming W after midnight. Mostly clear. Seas around 1 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: 2:29 pm EDT Jun 5, 2026
Forecast Valid: 8pm EDT Jun 5, 2026-6pm EDT Jun 12, 2026
  Forecast Discussion
  Get as KML Get as XML

RADAR & SATELLITE IMAGES

 Link to Satellite Data