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La Roche-sur-Yon, Pays de la Loire climate
Cfb Oceanic / temperate
La Roche-sur-Yon has a mildly seasonal cool-temperate climate (Oceanic / temperate, Köppen Cfb). The hottest month is July with an average daily high near 25°C, while the coldest is January averaging around 3°C at night. Around 849 mm of precipitation falls each year, peaking in November (101 mm) and easing off in June (45 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)La Roche-sur-Yon climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 9 | 10 | 13 | 16 | 20 | 23 | 25 | 25 | 22 | 17 | 13 | 10 |
| Avg temp (°C) | 6 | 6 | 9 | 11 | 14 | 18 | 19 | 19 | 17 | 13 | 9 | 6 |
| Avg low (°C) | 3 | 2 | 4 | 6 | 9 | 12 | 14 | 13 | 11 | 9 | 6 | 3 |
| Precipitation (mm) | 92 | 69 | 64 | 62 | 61 | 45 | 48 | 49 | 67 | 94 | 101 | 98 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 9 | 10 | 13 | 16 | 20 | 23 |
| Avg temp (°C) | 6 | 6 | 9 | 11 | 14 | 18 |
| Avg low (°C) | 3 | 2 | 4 | 6 | 9 | 12 |
| Precipitation (mm) | 92 | 69 | 64 | 62 | 61 | 45 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 25 | 25 | 22 | 17 | 13 | 10 |
| Avg temp (°C) | 19 | 19 | 17 | 13 | 9 | 6 |
| Avg low (°C) | 14 | 13 | 11 | 9 | 6 | 3 |
| Precipitation (mm) | 48 | 49 | 67 | 94 | 101 | 98 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 69 | 64 | 62 | 62 | 63 | 59 | 53 | 52 | 53 | 63 | 67 | 67 |
| Relative humidity (%) | 91 | 87 | 84 | 80 | 78 | 76 | 74 | 74 | 76 | 84 | 89 | 91 |
| Wind speed (m/s) | 3.6 | 3.5 | 3.4 | 3.2 | 3.0 | 2.9 | 2.8 | 2.8 | 2.9 | 3.2 | 3.4 | 3.7 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 69 | 64 | 62 | 62 | 63 | 59 |
| Relative humidity (%) | 91 | 87 | 84 | 80 | 78 | 76 |
| Wind speed (m/s) | 3.6 | 3.5 | 3.4 | 3.2 | 3.0 | 2.9 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 53 | 52 | 53 | 63 | 67 | 67 |
| Relative humidity (%) | 74 | 74 | 76 | 84 | 89 | 91 |
| Wind speed (m/s) | 2.8 | 2.8 | 2.9 | 3.2 | 3.4 | 3.7 |
Methodology & sources
Temperature & precipitation — 1991–2020 normals computed from 30 years of daily observations at LA Roche Sur Yon Les Ajoncs, a weather station, about 5 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.