Berlin or Brussels: which climate?
Berlin (Germany) has a warm-summer humid continental climate, whereas Brussels (Belgium) 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 Berlin and to Brussels.
Brussels is warmer than Berlin by 1.0 °C in annual average: 10.2 °C against 9.2 °C.
Brussels gets more rain than Berlin: 735 mm per year against 606 mm.
Berlin has warmed by +2.4 °C between 1940 and 2025, against +1.9 °C in Brussels. Berlin is therefore warming faster than Brussels. Both trends are statistically significant.
Berlin averages 6 hot days (≥ 30 °C) and 75 frost days per year; Brussels averages 3 and 47.
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 | Berlin | Brussels | Difference |
|---|---|---|---|
| Mean daily temperature | 9.2 °C | 10.2 °C | +1.0 °C |
| Average daily high | 12.7 °C | 13.6 °C | +0.9 °C |
| Average daily low | 5.8 °C | 6.9 °C | +1.1 °C |
| Annual rainfall | 606 mm | 735 mm | +129 mm |
| Sunshine / day | 7.5 h | 7.6 h | negligible |
| Hot days (≥ 30 °C) | 6 d/yr | 3 d/yr | negligible |
| Frost days (< 0 °C) | 75 d/yr | 47 d/yr | -28 d/yr |
| Rainy days (≥ 1 mm) | 127 d/yr | 144 d/yr | +17 d/yr |
| Mean relative humidity | 77 % | 80 % | +3 % |
| Average peak wind | 17.7 km/h | 19.9 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.