Average humidity in Portsmouth (NH)
On this page you find more information about the monthly relative humidity over the year in Portsmouth (New Hampshire), the United States of America.
Portsmouth shows variation in the level of humidity throughout the year. The highest humidity is noted duing September, it reaches up to 76%, which is categorized as high. On the other hand, the lowest humidity is recorded in April, with levels falling to 62%.
The average humidity in Portsmouth is approximately 70%, which is high.
Humidity is an essential factor in how you experience temperature. During the warmest month, July, the temperature is around 27°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.
Forecast for Portsmouth (NH)
Wed Dec 25
1°C | -8°C
N 
4 m/s
4 m/s
broken clouds and no rain
Thu Dec 26
4°C | -7°C
NW 1 m/s
1 m/s
clear and no rain
Fri Dec 27
5°C | -8°C
SW 2 m/s
2 m/s
partly cloudy and no rain
