Click on a day for an hourly weather forecast
The temperatures in Jonkoping in September are quite cold with temperatures between 9°C and 16°C, warm clothes are a must.
You can expect about 3 to 8 days of rain in Jonkoping 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 Jonkoping in September 2025.
If you’re planning to visit Jonkoping in the near future, we highly recommend that you review the 14 day weather forecast for Jonkoping before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 0° / -3° | 5 | 8 | 19 | 43 mm | Awful | Jonkoping in January |
| February | 0° / -4° | 5 | 6 | 18 | 42 mm | Awful | Jonkoping in February |
| March | 4° / -2° | 6 | 13 | 12 | 37 mm | Awful | Jonkoping in March |
| April | 10° / 2° | 4 | 22 | 4 | 27 mm | Bad | Jonkoping in April |
| May | 15° / 6° | 5 | 25 | 1 | 56 mm | Good | Jonkoping in May |
| June | 19° / 9° | 5 | 25 | 0 | 73 mm | Good | Jonkoping in June |
| July | 21° / 12° | 6 | 25 | 0 | 82 mm | Good | Jonkoping in July |
| August | 19° / 11° | 5 | 26 | 0 | 72 mm | Good | Jonkoping in August |
| September | 16° / 9° | 4 | 26 | 0 | 45 mm | Good | Jonkoping in September |
| October | 10° / 5° | 5 | 24 | 2 | 48 mm | Bad | Jonkoping in October |
| November | 5° / 2° | 5 | 18 | 7 | 46 mm | Awful | Jonkoping in November |
| December | 1° / -2° | 5 | 11 | 15 | 43 mm | Awful | Jonkoping in December |