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

For More Weather Information:

Gray/Portland, ME Local Forecast Office

6NM SSE Portsmouth NH

Marine Point Forecast

[NOTICE]

    • Overnight

      Overnight:Variable winds 5 kt or less. Cloudy. Seas around 1 ft.

      Low: 49 °F

      Light Wind
      1ft

    • Sunday

      Sunday:SSE wind 5 to 10 kt. Rain, mainly after 9am. Seas 1 to 2 ft.

      High: 54 °F

      SSE 10kt
      1-2ft

    • Sunday Night

      Sunday Night:E wind around 10 kt. Rain before 2am, then rain and possibly a thunderstorm between 2am and 5am, then showers likely and possibly a thunderstorm after 5am. Seas 2 to 3 ft.

      Low: 49 °F

      E 10kt
      2-3ft

    • Memorial Day

      Memorial Day:Variable winds 5 kt or less. Showers likely, mainly before 8am. Seas around 4 ft.

      High: 64 °F

      Light Wind
      4ft

    • Monday Night

      Monday Night:Variable winds 5 kt or less. Mostly cloudy. Seas 3 to 4 ft.

      Low: 52 °F

      Light Wind
      3-4ft

    • Tuesday

      Tuesday:Variable winds 5 kt or less. Mostly sunny. Seas around 3 ft.

      High: 73 °F

      Light Wind
      3ft

    • Tuesday Night

      Tuesday Night:Variable winds 5 kt or less. Mostly clear. Seas around 3 ft.

      Low: 57 °F

      Light Wind
      3ft

    • Wednesday

      Wednesday:W wind 5 to 10 kt becoming SW in the afternoon. A chance of showers. Seas around 2 ft.

      High: 74 °F

      WSW 10kt
      2ft

    • Wednesday Night

      Wednesday Night:Variable winds 5 kt or less. A chance of showers. Seas 1 to 2 ft.

      Low: 54 °F

      Light Wind
      1-2ft


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 7:31 pm EDT May 23, 2026
Forecast Valid: 11pm EDT May 23, 2026-6pm EDT May 30, 2026

View Nearby Observations

Detailed Forecast


Overnight
Variable winds 5 kt or less. Cloudy. Seas around 1 ft.
Sunday
SSE wind 5 to 10 kt. Rain, mainly after 9am. Seas 1 to 2 ft.
Sunday Night
E wind around 10 kt. Rain before 2am, then rain and possibly a thunderstorm between 2am and 5am, then showers likely and possibly a thunderstorm after 5am. Seas 2 to 3 ft.
Memorial Day
Variable winds 5 kt or less. Showers likely, mainly before 8am. Seas around 4 ft.
Monday Night
Variable winds 5 kt or less. Mostly cloudy. Seas 3 to 4 ft.
Tuesday
Variable winds 5 kt or less. Mostly sunny. Seas around 3 ft.
Tuesday Night
Variable winds 5 kt or less. Mostly clear. Seas around 3 ft.
Wednesday
W wind 5 to 10 kt becoming SW in the afternoon. A chance of showers. Seas around 2 ft.
Wednesday Night
Variable winds 5 kt or less. A chance of showers. Seas 1 to 2 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: 42.98°N 70.74°W
Last Update: 7:31 pm EDT May 23, 2026
Forecast Valid: 11pm EDT May 23, 2026-6pm EDT May 30, 2026
  Forecast Discussion
  Get as KML Get as XML

RADAR & SATELLITE IMAGES

 Link to Satellite Data