Click on a day for an hourly weather forecast
The temperatures in Kastrup in September are usually low and can range between 11°C and 17°C.
You can expect rain for roughly half of the month of September in Kastrup. We’re expecting roughly 8 to 15 days of rain, so your rubber boots and umbrella are going to see plenty of use this month if you’re keen on staying dry.
Our weather forecast can give you a great sense of what weather to expect in Kastrup in September 2025.
If you’re planning to visit Kastrup in the near future, we highly recommend that you review the 14 day weather forecast for Kastrup before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 4° / 0° | 9 | 20 | 1 | 64 mm | Awful | Kastrup in January |
| February | 4° / 0° | 7 | 20 | 1 | 53 mm | Awful | Kastrup in February |
| March | 7° / 1° | 7 | 22 | 1 | 57 mm | Bad | Kastrup in March |
| April | 11° / 4° | 6 | 24 | 0 | 49 mm | Ok | Kastrup in April |
| May | 15° / 7° | 8 | 23 | 0 | 66 mm | Ok | Kastrup in May |
| June | 19° / 11° | 8 | 23 | 0 | 74 mm | Ok | Kastrup in June |
| July | 21° / 13° | 9 | 22 | 0 | 76 mm | Ok | Kastrup in July |
| August | 21° / 13° | 9 | 22 | 0 | 83 mm | Ok | Kastrup in August |
| September | 17° / 11° | 9 | 21 | 0 | 76 mm | Ok | Kastrup in September |
| October | 13° / 8° | 9 | 22 | 0 | 76 mm | Bad | Kastrup in October |
| November | 8° / 5° | 8 | 22 | 0 | 64 mm | Bad | Kastrup in November |
| December | 5° / 2° | 10 | 20 | 1 | 74 mm | Awful | Kastrup in December |