Average humidity in Harrow

On this page you find more information about the monthly relative humidity over the year in Harrow (Greater London), the United Kingdom.

Harrow's humidity levels vary throughout the year. The highest levels occur in November, reaching 81% (very high), while the lowest is recorded in April at 64%.

Throughout the year, the average humidity in Harrow is 72%.

Humidity plays an important role in how temperatures are felt. During the warmest month, July, the maximum average temperature is around 23°C. Combined with high humidity during this period, the temperature can feel even warmer than the thermometer shows.

During the coldest month, February, the maximum average temperature is around 9°C. This period has high humidity. When winter temperatures are low and humidity is high, it can make the air feel even colder than it actually is. Check out our detailed temperature page for more information.