Denmark has two good windows: Jun–Jul and September. They sit either side of the season the climate record rules out, which is why the shoulder months matter here. The recommended window is May–Sep.
Cold; brief mild summer
| Month | High °C | High °F | Rainy days | Verdict |
|---|---|---|---|---|
| January | 2.5 | 36 | 41% | Too cold |
| February | 2.7 | 37 | 38% | Too cold |
| March | 5.2 | 41 | 33% | Fair |
| April | 9.8 | 50 | 29% | Fair |
| May | 14.4 | 58 | 32% | Fair |
| June | 17.8 | 64 | 41% | Go |
| July | 20.6 | 69 | 43% | Go |
| August | 20.6 | 69 | 47% | Fair |
| September | 17.0 | 63 | 39% | Go |
| October | 12.0 | 54 | 45% | Fair |
| November | 7.2 | 45 | 45% | Fair |
| December | 3.8 | 39 | 46% | Too cold |
Verdict combines mean daytime high with rainy-day frequency. “Rainy days” is the share of days in the month with at least 1 mm of rain.
April is the driest month, with rain on 29% of days and daytime highs near 9.8°C (50°F). August is the wettest, at 47%. The warmest month is July at 20.6°C (69°F); the coolest is January at 2.5°C (36°F). The record rules out too cold in Dec–Feb.