Cooling and heating degree days by country - annual data

In 2025, Luxembourg's cooling and heating degree days by country increased by 1.7% compared to 2024, reaching 2,826.

Luxembourg accounts for 99.9% of the EU-27 total of 2,828.

Luxembourg ranks 12th out of 27 EU member states with reported data — in the top half of the distribution.

Over the past five years, the indicator has grown by 2.3% (from 2,762 in 2020).

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