Harnes, in Hauts-de-France, France, is home to roughly 13,600 people in the Central European time zone at 50.4°N latitude.
In 2025, Harnes averaged an annual temperature of 53°F, with hottest temperatures reaching 98°F in July and lowest around 22°F in January. The city received approximately 24 inches of precipitation during the year.
View historical weather for Harnes · More cities in Hauts-de-France