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

For More Weather Information:

Gray/Portland, ME Local Forecast Office

3NM SE Portsmouth NH

Marine Point Forecast

[NOTICE]

    • This Afternoon

      This Afternoon:SSW wind 5 to 10 kt. Partly sunny. Seas 1 ft or less.

      High: 53 °F

      SSW 10kt
      < 1ft

    • Tonight

      Tonight:Variable winds 5 kt or less. Increasing clouds. Seas 1 ft or less.

      Low: 44 °F

      Light Wind
      < 1ft

    • Wednesday

      Wednesday:ESE wind 5 to 8 kt becoming SSE 7 to 10 kt in the afternoon. Winds could gust as high as 20 kt. A slight chance of showers, mainly between 4pm and 5pm. Seas 1 ft or less.

      High: 52 °F

      ⇑SSE 10kt
      < 1ft

    • Wednesday Night

      Wednesday Night:S wind 10 to 15 kt, with gusts as high as 25 kt. A chance of rain after 9pm. Seas 1 ft or less.

      Low: 48 °F

      S 15kt
      < 1ft

    • Thursday

      Thursday:ESE wind 10 to 15 kt, with gusts as high as 25 kt. Rain. Seas 1 ft or less.

      High: 51 °F

      ESE 15kt
      < 1ft

    • Thursday Night

      Thursday Night:E wind 10 to 15 kt becoming NE after midnight. Winds could gust as high as 25 kt. Rain. Seas 1 ft or less.

      Low: 46 °F

      NE 15kt
      < 1ft

    • Friday

      Friday:NNE wind 10 to 15 kt, with gusts as high as 25 kt. Rain. Seas 1 ft or less.

      High: 50 °F

      NNE 15kt
      < 1ft

    • Friday Night

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

      Low: 47 °F

      Light Wind
      < 1ft

    • Saturday

      Saturday:Variable winds 5 kt or less. Mostly sunny. Seas 1 ft or less.

      High: 66 °F

      Light Wind
      < 1ft


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 8:41 am EDT May 12, 2026
Forecast Valid: 1pm EDT May 12, 2026-6pm EDT May 18, 2026

View Nearby Observations

Detailed Forecast


This Afternoon
SSW wind 5 to 10 kt. Partly sunny. Seas 1 ft or less.
Tonight
Variable winds 5 kt or less. Increasing clouds. Seas 1 ft or less.
Wednesday
ESE wind 5 to 8 kt becoming SSE 7 to 10 kt in the afternoon. Winds could gust as high as 20 kt. A slight chance of showers, mainly between 4pm and 5pm. Seas 1 ft or less.
Wednesday Night
S wind 10 to 15 kt, with gusts as high as 25 kt. A chance of rain after 9pm. Seas 1 ft or less.
Thursday
ESE wind 10 to 15 kt, with gusts as high as 25 kt. Rain. Seas 1 ft or less.
Thursday Night
E wind 10 to 15 kt becoming NE after midnight. Winds could gust as high as 25 kt. Rain. Seas 1 ft or less.
Friday
NNE wind 10 to 15 kt, with gusts as high as 25 kt. Rain. Seas 1 ft or less.
Friday Night
Variable winds 5 kt or less. A chance of showers. Seas 1 ft or less.
Saturday
Variable winds 5 kt or less. Mostly sunny. Seas 1 ft 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.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

Point Forecast: 43.02°N 70.73°W
Last Update: 8:41 am EDT May 12, 2026
Forecast Valid: 1pm EDT May 12, 2026-6pm EDT May 18, 2026
  Forecast Discussion
  Get as KML Get as XML

RADAR & SATELLITE IMAGES

 Link to Satellite Data