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 recorded an average annual temperature of 53°F. The hottest temperatures reached 98°F in July; the coolest were 22°F in January. Total precipitation for the year was 24 inches, with the wettest month being January. Snowfall for the year totaled approximately 5 inches.
View current conditions and forecast for Harnes · More cities in Hauts-de-France