Cooling and heating degree days by country - annual data

In 2025, Slovenia's cooling and heating degree days by country decreased by 46.0% compared to 2024, reaching 73.9.

Slovenia accounts for 57.8% of the EU-27 total of 127.8.

Slovenia ranks 12th out of 25 EU member states with reported data — in the top half of the distribution.

Over the past five years, the indicator has grown by 113.2% (from 34.7 in 2020).

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