Copenhagen, Denmark is most comfortable in April, May, June. The toughest month for heat is January (comfort 90/100). In August, daytime highs average 20.3°C (feels like 19.5°C) with 0 days over 30°C and 0 tropical nights.
| Month | Avg high | Avg low | Feels like | Days ≥30°C | Days ≥35°C | Nights ≥20°C | Comfort |
|---|---|---|---|---|---|---|---|
| January | 4.2° | 0.9° | -0.7° | 0 | 0 | 0 | 90 |
| February | 4.6° | 0.7° | -0.2° | 0 | 0 | 0 | 92 |
| March | 7.2° | 1.8° | 3.1° | 0 | 0 | 0 | 98 |
| April | 10.4° | 4° | 6.9° | 0 | 0 | 0 | 100 |
| May | 15.1° | 8.8° | 12.9° | 0 | 0 | 0 | 100 |
| June | 19.3° | 12.9° | 18.4° | 0 | 0 | 0 | 100 |
| July | 20.7° | 15.1° | 19.9° | 0 | 0 | 0.2 | 100 |
| August | 20.3° | 14.7° | 19.5° | 0 | 0 | 0 | 100 |
| September | 18.1° | 13.3° | 16.5° | 0 | 0 | 0 | 100 |
| October | 13.2° | 9.5° | 10.2° | 0 | 0 | 0 | 100 |
| November | 8.2° | 5.4° | 4.4° | 0 | 0 | 0 | 100 |
| December | 5° | 2.3° | 0.8° | 0 | 0 | 0 | 93 |
No. August daytime highs in Copenhagen average a comfortable 20.3°C with 0 days over 30°C — it's a solid summer choice for avoiding extreme heat.
Based on 5 years of climate data, the most comfortable months in Copenhagen are April, May, June. The toughest month for heat is January, scoring 90/100 on our heat-comfort index.
In August, nights in Copenhagen average a low of 14.7°C, with 0 tropical nights per month (nights that stay at or above 20°C) — a key factor for sleep quality if your stay has no air conditioning.
Tell us where and when you're going. If a heatwave becomes likely for your dates, we'll email you early — with cooler day-by-day alternatives nearby.