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Weather forecast in South Portland (ME)

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This data display current weather and forecast for the coming days in South Portland. In addition to temperature, wind, humidity and pressure, we include data on the probability of precipitation so you can have all the information about your destination before your trip.

South Portland current temperature and weather

March 10, 2026
Night
Clear
44.1°F
Feels like:
38.7°F
Clear
Wind: 8.7 mph (14 Km/h) SW SW
Pressure: 29.94 inHg (1014 hPa)
Humidity: 66%
Precip. prob.: 0%
Visibility: 6 mi (10 km)

UV index: 0
Morning
Sunny
47.1°F
Feels like:
44.1°F
Sunny
Wind: 4.9 mph (7.9 Km/h) SW SW
Pressure: 29.99 inHg (1016 hPa)
Humidity: 71%
Precip. prob.: 0%
Visibility: 6 mi (10 km)

UV index: 1
Day
Cloudy
41.7°F
Feels like:
36.5°F
Cloudy
Wind: 9.8 mph (15.8 Km/h) SW SW
Pressure: 29.96 inHg (1015 hPa)
Humidity: 96%
Precip. prob.: 0%
Visibility: 6 mi (10 km)

UV index: 2.4
Evening
Fog
34.3°F
Feels like:
29.5°F
Fog
Wind: 6.3 mph (10.1 Km/h) W W
Pressure: 29.98 inHg (1015 hPa)
Humidity: 97%
Precip. prob.: 0%
Visibility: 6 mi (10 km)

UV index: 0


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Marine weather forecast South Portland

The graphs show wave heights and directions, as well as wind speed and direction in South Portland for the coming days. Click on the sea state chart for more details




You may also be interested in other sections of our site for South Portland: Sea temperature, Sunrise and Sunset, Tides

South Portland weather by month

In order for you to be able to estimate what the weather is like in South Portland throughout the year, we provide monthly data for the last few years. Select the month you are interested in.

Where is the warmest sea water in the world?

If you want to plan a vacation on the beach and enjoy the warm sea, choose the day of the year, region and the minimum comfortable sea/ocean temperature that interests you. As a result, you will get a list of countries and cities in which the average sea temperature or maximum temperature on this day over the past 10 years exceeds your chosen value

Region
Date (day and month)
Water temperature: min 60°F
 Average temperature  Maximum temperature

Maine photo gallery

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  • West Quoddy Head Lubec - Gran Manan in Backgroun

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Our report for South Portland is compiled using satellite data together with in-situ observations to get the most reliable daily data of sea surface temperatures, surf forecasts, current temperatures and weather forecasts.

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