Buenos Aires or Dublin: which climate?
Buenos Aires (Argentina) has a humid subtropical climate, whereas Dublin (Ireland) 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 Buenos Aires and to Dublin.
Buenos Aires is warmer than Dublin by 7.7 °C in annual average: 17.2 °C against 9.5 °C.
Buenos Aires gets more rain than Dublin: 992 mm per year against 829 mm.
Buenos Aires gets 9.6 hours of sunshine per day on average, against 7.8 hours in Dublin.
Buenos Aires and Dublin are warming at the same rate: about +0.6 °C between 1940 and 2025 on both sides.
Buenos Aires averages 11 hot days (≥ 30 °C) and 0 frost days per year; Dublin averages 0 and 17.
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 | Buenos Aires | Dublin | Difference |
|---|---|---|---|
| Mean daily temperature | 17.2 °C | 9.5 °C | -7.7 °C |
| Average daily high | 20.4 °C | 12.1 °C | -8.3 °C |
| Average daily low | 14.2 °C | 7.0 °C | -7.2 °C |
| Annual rainfall | 992 mm | 829 mm | -163 mm |
| Sunshine / day | 9.6 h | 7.8 h | -1.8 h |
| Hot days (≥ 30 °C) | 11 d/yr | 0 d/yr | -11 d/yr |
| Frost days (< 0 °C) | 0 d/yr | 17 d/yr | +17 d/yr |
| Rainy days (≥ 1 mm) | 93 d/yr | 159 d/yr | +66 d/yr |
| Mean relative humidity | 75 % | 83 % | +8 % |
| Average peak wind | 22.6 km/h | 22.5 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.