Cooling and heating degree days by country - annual data

In 2025, Portugal's cooling and heating degree days by country increased by 14.5% compared to 2024, reaching 1,160.

Portugal accounts for 41.0% of the EU-27 total of 2,828.

Portugal ranks 25th 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 10.3% (from 1,051 in 2020).

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