Cooling and heating degree days by country - annual data

In 2025, Belgium's cooling and heating degree days by country increased by 3.2% compared to 2024, reaching 2,474.

Belgium accounts for 87.5% of the EU-27 total of 2,828.

Belgium ranks 16th out of 27 EU member states with reported data — in the bottom half of the distribution.

Over the past five years, the indicator has grown by 3.8% (from 2,382 in 2020).

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