Click on a day for an hourly weather forecast
The temperatures in Copenhagen in September are usually low and can range between 14°C and 17°C.
You can expect about 3 to 8 days of rain in Copenhagen during the month of September. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Our weather forecast can give you a great sense of what weather to expect in Copenhagen in September 2025.
If you’re planning to visit Copenhagen in the near future, we highly recommend that you review the 14 day weather forecast for Copenhagen before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 3° / 1° | 6 | 14 | 10 | 35 mm | Awful | Copenhagen in January |
| February | 3° / 0° | 5 | 15 | 9 | 29 mm | Awful | Copenhagen in February |
| March | 5° / 2° | 4 | 23 | 4 | 25 mm | Awful | Copenhagen in March |
| April | 9° / 5° | 3 | 26 | 2 | 19 mm | Bad | Copenhagen in April |
| May | 13° / 9° | 4 | 27 | 0 | 40 mm | Ok | Copenhagen in May |
| June | 18° / 13° | 3 | 27 | 0 | 48 mm | Good | Copenhagen in June |
| July | 20° / 15° | 4 | 27 | 0 | 60 mm | Good | Copenhagen in July |
| August | 20° / 16° | 4 | 27 | 0 | 68 mm | Good | Copenhagen in August |
| September | 17° / 14° | 3 | 27 | 0 | 39 mm | Good | Copenhagen in September |
| October | 12° / 10° | 4 | 27 | 0 | 44 mm | Ok | Copenhagen in October |
| November | 8° / 6° | 6 | 23 | 1 | 41 mm | Ok | Copenhagen in November |
| December | 5° / 3° | 6 | 17 | 7 | 38 mm | Awful | Copenhagen in December |