Athens or Bordeaux: which climate?
Athens (Greece) has a hot-summer mediterranean climate, whereas Bordeaux (France) has a temperate oceanic climate, according to the Köppen-Geiger classification.
The values compared here are normals computed over 86 complete calendar years, from 1940 to 2025, using ERA5 reanalysis data from the Copernicus programme. The same method and the same period apply to Athens and to Bordeaux.
Athens is warmer than Bordeaux by 4.1 °C in annual average: 17.5 °C against 13.4 °C.
Bordeaux gets more rain than Athens: 778 mm per year against 364 mm.
Athens gets 10.4 hours of sunshine per day on average, against 9.1 hours in Bordeaux.
Athens and Bordeaux are warming at the same rate: about +1.6 °C between 1940 and 2025 on both sides.
Athens averages 85 hot days (≥ 30 °C) and 3 frost days per year; Bordeaux averages 19 and 26.
Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.
| Indicator | Athens | Bordeaux | Difference |
|---|---|---|---|
| Mean daily temperature | 17.5 °C | 13.4 °C | -4.1 °C |
| Average daily high | 22.1 °C | 18.0 °C | -4.1 °C |
| Average daily low | 13.2 °C | 9.2 °C | -4.0 °C |
| Annual rainfall | 364 mm | 778 mm | +414 mm |
| Sunshine / day | 10.4 h | 9.1 h | -1.3 h |
| Hot days (≥ 30 °C) | 85 d/yr | 19 d/yr | -66 d/yr |
| Frost days (< 0 °C) | 3 d/yr | 26 d/yr | +23 d/yr |
| Rainy days (≥ 1 mm) | 59 d/yr | 126 d/yr | +67 d/yr |
| Mean relative humidity | 64 % | 76 % | +12 % |
| Average peak wind | 15.4 km/h | 14.9 km/h | negligible |
A difference is only reported when it exceeds the resolution of the data. ERA5 is a reanalysis on a grid of about 31 km: two nearby cities often fall in the same cell, and below half a degree you are reading the grid, not the climate.