Cooling and heating degree days by country - annual data

In 2025, Slovakia's cooling and heating degree days by country increased by 12.6% compared to 2024, reaching 3,041.

Slovakia accounts for 107.5% of the EU-27 total of 2,828.

Slovakia ranks 9th out of 27 EU member states with reported data — in the top half of the distribution.

Over the past five years, the indicator has fallen by 1.6% (from 3,089 in 2020).

Source: Eurostat dataset nrg_chdd_a, accessed via the eupublicdata pipeline.