Dublin or Miami: which climate?
Dublin (Ireland) has a temperate oceanic climate, whereas Miami (United States) has a tropical savanna 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 Dublin and to Miami.
Miami is warmer than Dublin by 14.9 °C in annual average: 24.4 °C against 9.5 °C.
Miami gets more rain than Dublin: 1,041 mm per year against 829 mm.
Miami gets 10.6 hours of sunshine per day on average, against 7.8 hours in Dublin.
Dublin and Miami are warming at the same rate: about +0.8 °C between 1940 and 2025 on both sides.
Dublin averages 0 hot days (≥ 30 °C) and 17 frost days per year; Miami averages 45 and 0.
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 | Dublin | Miami | Difference |
|---|---|---|---|
| Mean daily temperature | 9.5 °C | 24.4 °C | +14.9 °C |
| Average daily high | 12.1 °C | 26.7 °C | +14.6 °C |
| Average daily low | 7.0 °C | 22.3 °C | +15.3 °C |
| Annual rainfall | 829 mm | 1,041 mm | +212 mm |
| Sunshine / day | 7.8 h | 10.6 h | +2.8 h |
| Hot days (≥ 30 °C) | 0 d/yr | 45 d/yr | +45 d/yr |
| Frost days (< 0 °C) | 17 d/yr | 0 d/yr | -17 d/yr |
| Rainy days (≥ 1 mm) | 159 d/yr | 162 d/yr | negligible |
| Mean relative humidity | 83 % | 75 % | -8 % |
| Average peak wind | 22.5 km/h | 21.3 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.