- Chartres ›
- Weather by month
Chartres Weather by Month
Average temperatures, rainfall and humidity for Chartres, France, month by month, built from OpenWeather's historical records. Use it to see what a typical Chartres month looks like before you travel — then check the live Chartres forecast for the days ahead.
Warmest month
July
27°C average high
Coolest month
January
2°C average low
Wettest month
May
41 mm of rain
Driest month
July
28 mm of rain
Average temperature and rainfall in Chartres by month
Averages of the daily highs and lows recorded in each month, with total rainfall, mean humidity and mean wind speed.
| Month | Avg high | Avg low | Record low / high | Rainfall | Humidity | Wind |
|---|---|---|---|---|---|---|
| January | 7°C | 2°C | -9°C / 15°C | 36 mm | 90% | 16 km/h |
| February | 10°C | 3°C | -10°C / 22°C | 35 mm | 84% | 18 km/h |
| March | 13°C | 4°C | -6°C / 25°C | 38 mm | 76% | 17 km/h |
| April | 17°C | 6°C | -4°C / 28°C | 34 mm | 70% | 15 km/h |
| May | 20°C | 10°C | 1°C / 33°C | 41 mm | 73% | 14 km/h |
| June | 25°C | 14°C | 6°C / 43°C | 30 mm | 70% | 13 km/h |
| July | 27°C | 15°C | 8°C / 42°C | 28 mm | 64% | 13 km/h |
| August | 26°C | 15°C | 5°C / 38°C | 30 mm | 66% | 13 km/h |
| September | 22°C | 12°C | 3°C / 36°C | 32 mm | 74% | 13 km/h |
| October | 17°C | 9°C | 0°C / 29°C | 38 mm | 83% | 14 km/h |
| November | 11°C | 5°C | -6°C / 21°C | 38 mm | 89% | 16 km/h |
| December | 9°C | 3°C | -8°C / 17°C | 31 mm | 90% | 16 km/h |
Best time to visit Chartres
The most comfortable time to visit Chartres is generally June and August to September, balancing mild daytime temperatures against the driest stretch of the year. The city has strongly marked seasons and rainfall is spread evenly across the months, totalling about 409 mm a year.
Travellers who prefer heat should aim for July, when highs average 27°C. May is the month to avoid if rain would spoil your plans — it averages 41 mm, roughly 1× the rainfall of July.
Source: OpenWeather historical and statistical weather data. Values are long-term averages, not a forecast — see the Chartres forecast for what is happening now.