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Chartres, Centre-Val de Loire climate
Cfb Oceanic / temperate
Chartres has a seasonal cool-temperate climate (Oceanic / temperate, Köppen Cfb). The hottest month is July with an average daily high near 26°C, while the coldest is January averaging around 1°C at night. Precipitation is fairly even year-round, totalling about 589 mm.
Temperature & precipitation
Daily high–low temperature range with the monthly average, plus monthly precipitation · 1991–2020 normals · hover a month for the exact figuresHours of sunshine per day
Estimated sunny hours each month — daylight length × clear-sky fraction · 1991–2020 monthly cloud cover (NASA POWER)Chartres climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 7 | 8 | 12 | 16 | 19 | 23 | 26 | 26 | 22 | 16 | 11 | 8 |
| Avg temp (°C) | 4 | 5 | 8 | 10 | 14 | 17 | 20 | 19 | 16 | 12 | 7 | 5 |
| Avg low (°C) | 1 | 1 | 3 | 5 | 8 | 11 | 13 | 13 | 10 | 8 | 4 | 2 |
| Precipitation (mm) | 48 | 40 | 42 | 39 | 55 | 49 | 53 | 47 | 44 | 55 | 60 | 58 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 7 | 8 | 12 | 16 | 19 | 23 |
| Avg temp (°C) | 4 | 5 | 8 | 10 | 14 | 17 |
| Avg low (°C) | 1 | 1 | 3 | 5 | 8 | 11 |
| Precipitation (mm) | 48 | 40 | 42 | 39 | 55 | 49 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 26 | 26 | 22 | 16 | 11 | 8 |
| Avg temp (°C) | 20 | 19 | 16 | 12 | 7 | 5 |
| Avg low (°C) | 13 | 13 | 10 | 8 | 4 | 2 |
| Precipitation (mm) | 53 | 47 | 44 | 55 | 60 | 58 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 72 | 70 | 68 | 67 | 70 | 67 | 63 | 63 | 61 | 68 | 72 | 71 |
| Relative humidity (%) | 93 | 89 | 83 | 79 | 78 | 76 | 73 | 72 | 76 | 85 | 91 | 94 |
| Wind speed (mph) | 8.3 | 8.1 | 7.5 | 6.6 | 6.3 | 6.0 | 5.9 | 5.7 | 6.1 | 7.0 | 7.2 | 8.0 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 72 | 70 | 68 | 67 | 70 | 67 |
| Relative humidity (%) | 93 | 89 | 83 | 79 | 78 | 76 |
| Wind speed (mph) | 8.3 | 8.1 | 7.5 | 6.6 | 6.3 | 6.0 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 63 | 63 | 61 | 68 | 72 | 71 |
| Relative humidity (%) | 73 | 72 | 76 | 85 | 91 | 94 |
| Wind speed (mph) | 5.9 | 5.7 | 6.1 | 7.0 | 7.2 | 8.0 |
Methodology & sources
Temperature & precipitation — 1991–2020 normals computed from 30 years of daily observations at Chartres/champol, a weather station, about 3 km from the city centre. The underlying daily records come from NOAA's global station network.
Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.