Average water temperature in Portland
On this page you find the mean water temperature over the year in Portland (Maine), the United States of America. Take a closer look at the water temperature patterns and what they mean for swimming and recreation.
In Portland, water temperatures vary throughout the year. The warmest month is August, with an average water temperature of 18°C.
The coldest month is March, with an average temperature of 3°C. These seasonal variations make Portland a great destination for different kinds of aquatic activities.
Forecast for Portland (ME)
7 m/s
almost clear and no rain
4 m/s
almost clear and no rain
4 m/s
partly cloudy and snow
Interested in more climate information?
This site provides you with all the information you need about the climate in Portland.
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