Chartres Weather & Climate: Best Time to Visit

Monthly Temperature in Chartres

Visitors to Chartres can expect significant temperature changes throughout the year. Average maximum daytime temperatures range from a comfortable 26°C (79°F) in August, the warmest time of the year, to a chilly 8°C (46°F) during cooler months like February.

At night, you can expect temperatures ranging from 14°C (57°F) in August to around 2°C (36°F) during February.

Check out our detailed temperature page for more information.

Temperature ranges by month

Rainfall in Chartres

Generally, Chartres experiences moderate precipitation patterns, averaging 702 mm (28 in) yearly. Year-round, Chartres has a balanced climate with minimal variation in precipitation. The difference between the wettest month, May, with 68 mm (2.7 in), and the driest month, September, with 52 mm (2 in), is minimal. For more details, please visit our Chartres Precipitation page.

The mean monthly precipitation over the year, including rain, hail, and snow

The average number of days each month with precipitation

Sunshine Hours in Chartres

Seasonal changes in sunshine hours are quite dramatic in Chartres. While July receives considerable daily sunshine with up to 8.0 hours, December marks the darkest time of the year, where sunshine is scarce with only 1.7 hours of sunlight per day.

Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Daily hours of sunshine

Daily percentage of sunshine

Humidity in Chartres by Month

The relative humidity is high throughout the year in Chartres.

The city experiences its highest humidity in December, reaching 89%. In April, the humidity drops to its lowest level at 72%. What does this mean? Read our detailed page on humidity levels for further details.

Relative humidity over the year