Cooling and heating degree days by country - monthly data by country
Countries reporting
30
Highest
664.91 Number
Finland
Lowest
47.15 Number
Malta
Median
440.73 Number
Years covered
46
1980–2025
Data points
1,426
What the numbers show
Cooling and heating degree days by country - monthly data is currently reported for 30 countries. The highest value is 664.91 Number in Finland; the lowest is 47.15 Number in Malta.
The median across all reporting countries is 440.73 Number, and the mean is 417.59 Number.
The gap between the highest and lowest reporting country is a factor of about 14.
Over the past decade 22 countries rose and 8 fell. The largest increase was in Portugal (up 41.4%), and the largest decrease in Malta (down 42.8%).
Cooling and heating degree days by country - monthly data: full country ranking
| # | Country | Latest | Year | 10-year change | Trend |
|---|---|---|---|---|---|
| 1 | Finland | 664.91 Number | 2025 | up 2.3% | falling |
| 2 | Norway | 605.74 Number | 2025 | down 1.2% | falling |
| 3 | Sweden | 588.85 Number | 2025 | down 3.8% | falling |
| 4 | Austria | 534.61 Number | 2025 | up 12.9% | falling |
| 5 | Czechia | 517.99 Number | 2025 | up 20.3% | falling |
| 6 | Latvia | 505.67 Number | 2025 | up 6.5% | falling |
| 7 | Switzerland | 503.84 Number | 2025 | up 10.1% | falling |
| 8 | Estonia | 502.94 Number | 2025 | up 6.5% | falling |
| 9 | Lithuania | 501.65 Number | 2025 | up 4.5% | falling |
| 10 | Slovakia | 488.11 Number | 2025 | down 0.8% | falling |
| 11 | Poland | 487.83 Number | 2025 | up 16.9% | falling |
| 12 | Slovenia | 476.04 Number | 2025 | up 3.5% | falling |
| 13 | Romania | 471.18 Number | 2025 | up 0.6% | falling |
| 14 | Hungary | 456.46 Number | 2025 | down 2.6% | falling |
| 15 | Germany | 454.55 Number | 2025 | up 30.2% | falling |
| 16 | Luxembourg | 426.91 Number | 2025 | up 25.2% | falling |
| 17 | Bulgaria | 426.02 Number | 2025 | up 1.8% | falling |
| 18 | Croatia | 413.43 Number | 2025 | up 0.2% | falling |
| 19 | Denmark | 394.36 Number | 2025 | up 12.2% | falling |
| 20 | Belgium | 377.66 Number | 2025 | up 35.8% | falling |
| 21 | Netherlands | 371.35 Number | 2025 | up 39.6% | falling |
| 22 | United Kingdom | 358.44 Number | 2025 | up 21.0% | falling |
| 23 | France | 351.86 Number | 2025 | up 22.9% | falling |
| 24 | Ireland | 344.95 Number | 2025 | up 16.4% | falling |
| 25 | Spain | 312.03 Number | 2025 | up 19.6% | falling |
| 26 | Italy | 307.44 Number | 2025 | down 5.0% | falling |
| 27 | Greece | 283.12 Number | 2025 | down 13.5% | falling |
| 28 | Portugal | 247.71 Number | 2025 | up 41.4% | falling |
| 29 | Cyprus | 104.98 Number | 2025 | down 32.4% | falling |
| 30 | Malta | 47.15 Number | 2025 | down 42.8% | falling |