Cooling and heating degree days by country - annual data

In 2025, Luxembourg's cooling and heating degree days by country increased by 129.7% compared to 2024, reaching 21.8.

Luxembourg accounts for 17.0% of the EU-27 total of 127.8.

Luxembourg ranks 16th out of 25 EU member states with reported data — in the bottom half of the distribution.

Over the past five years, the indicator has fallen by 45.4% (from 39.9 in 2020).

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