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Blois, Centre-Val de Loire climate
Cfb Oceanic / temperate
Blois 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 2°C at night. Precipitation is fairly even year-round, totalling about 667 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)Blois climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 8 | 9 | 13 | 16 | 20 | 24 | 26 | 26 | 22 | 17 | 12 | 8 |
| Avg temp (°C) | 5 | 6 | 9 | 11 | 15 | 18 | 20 | 20 | 17 | 13 | 8 | 5 |
| Avg low (°C) | 2 | 2 | 4 | 6 | 9 | 12 | 14 | 14 | 11 | 8 | 5 | 3 |
| Precipitation (mm) | 66 | 50 | 48 | 47 | 59 | 51 | 49 | 43 | 49 | 62 | 73 | 70 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 8 | 9 | 13 | 16 | 20 | 24 |
| Avg temp (°C) | 5 | 6 | 9 | 11 | 15 | 18 |
| Avg low (°C) | 2 | 2 | 4 | 6 | 9 | 12 |
| Precipitation (mm) | 66 | 50 | 48 | 47 | 59 | 51 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 26 | 26 | 22 | 17 | 12 | 8 |
| Avg temp (°C) | 20 | 20 | 17 | 13 | 8 | 5 |
| Avg low (°C) | 14 | 14 | 11 | 8 | 5 | 3 |
| Precipitation (mm) | 49 | 43 | 49 | 62 | 73 | 70 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 72 | 68 | 65 | 65 | 67 | 64 | 59 | 59 | 58 | 67 | 71 | 71 |
| Relative humidity (%) | 93 | 90 | 85 | 80 | 78 | 74 | 68 | 66 | 71 | 83 | 91 | 94 |
| Wind speed (m/s) | 3.4 | 3.3 | 3.1 | 2.8 | 2.7 | 2.6 | 2.6 | 2.5 | 2.6 | 2.9 | 3.0 | 3.3 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 72 | 68 | 65 | 65 | 67 | 64 |
| Relative humidity (%) | 93 | 90 | 85 | 80 | 78 | 74 |
| Wind speed (m/s) | 3.4 | 3.3 | 3.1 | 2.8 | 2.7 | 2.6 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 59 | 59 | 58 | 67 | 71 | 71 |
| Relative humidity (%) | 68 | 66 | 71 | 83 | 91 | 94 |
| Wind speed (m/s) | 2.6 | 2.5 | 2.6 | 2.9 | 3.0 | 3.3 |
Methodology & sources
Temperature & precipitation — 1991–2020 normals computed from 29 years of daily observations at Tours Val DE Loire, a weather station, about 49 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.