Average humidity in Portland (ME)

On this page you find more information about the monthly relative humidity over the year in Portland (Maine), the United States of America.

Portland shows variation in the level of humidity throughout the year. The highest humidity is noted duing September, it reaches up to 77%, which is categorized as high.

On the other hand, the lowest humidity is recorded in February, with levels falling to 65%.

The average humidity in Portland is approximately 71%, which is high.

Humidity is an essential factor in how you experience temperature. During the warmest month, July, the temperature is around 26°C. When this period is accompanied by high humidity, it results in a higher perceived temperature. This can cause greater discomfort, while in winter it can make the air feel much colder, adding to the cooler temperatures. Check out our detailed temperature page for more information.