Click on a day for an hourly weather forecast
The temperatures in Jarvenpaa in September are usually low and can range between 11°C and 15°C.
You can expect about 3 to 8 days of rain in Jarvenpaa 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 Jarvenpaa in September 2025.
If you’re planning to visit Jarvenpaa in the near future, we highly recommend that you review the 14 day weather forecast for Jarvenpaa before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | -2° / -5° | 6 | 4 | 21 | 84 mm | Awful | Jarvenpaa in January |
| February | -2° / -5° | 6 | 4 | 19 | 75 mm | Awful | Jarvenpaa in February |
| March | 1° / -3° | 8 | 6 | 18 | 64 mm | Awful | Jarvenpaa in March |
| April | 6° / 1° | 6 | 16 | 7 | 53 mm | Awful | Jarvenpaa in April |
| May | 12° / 7° | 5 | 25 | 1 | 60 mm | Ok | Jarvenpaa in May |
| June | 17° / 11° | 6 | 24 | 0 | 76 mm | Good | Jarvenpaa in June |
| July | 21° / 15° | 6 | 25 | 0 | 95 mm | Good | Jarvenpaa in July |
| August | 20° / 15° | 6 | 25 | 0 | 110 mm | Good | Jarvenpaa in August |
| September | 15° / 11° | 6 | 24 | 0 | 77 mm | Good | Jarvenpaa in September |
| October | 9° / 6° | 8 | 19 | 3 | 91 mm | Awful | Jarvenpaa in October |
| November | 5° / 2° | 10 | 13 | 7 | 93 mm | Awful | Jarvenpaa in November |
| December | 1° / -2° | 9 | 6 | 17 | 92 mm | Awful | Jarvenpaa in December |