Click on a day for an hourly weather forecast
The temperatures in Viljandimaa in September are quite cold with temperatures between 8°C and 16°C, warm clothes are a must.
You can expect about 3 to 8 days of rain in Viljandimaa 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 Viljandimaa in September 2026.
If you’re planning to visit Viljandimaa in the near future, we highly recommend that you review the 14 day weather forecast for Viljandimaa before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | -3° / -8° | 5 | 4 | 23 | 76 mm | Awful | Viljandimaa in January |
| February | -2° / -7° | 5 | 3 | 21 | 68 mm | Awful | Viljandimaa in February |
| March | 2° / -4° | 8 | 5 | 19 | 73 mm | Awful | Viljandimaa in March |
| April | 9° / 1° | 7 | 16 | 7 | 57 mm | Awful | Viljandimaa in April |
| May | 16° / 6° | 7 | 24 | 1 | 80 mm | Ok | Viljandimaa in May |
| June | 21° / 10° | 7 | 23 | 0 | 117 mm | Ok | Viljandimaa in June |
| July | 23° / 13° | 8 | 23 | 0 | 112 mm | Good | Viljandimaa in July |
| August | 22° / 12° | 6 | 25 | 0 | 110 mm | Good | Viljandimaa in August |
| September | 16° / 8° | 6 | 24 | 0 | 79 mm | Good | Viljandimaa in September |
| October | 9° / 3° | 9 | 19 | 3 | 89 mm | Awful | Viljandimaa in October |
| November | 4° / 0° | 9 | 13 | 8 | 83 mm | Awful | Viljandimaa in November |
| December | -1° / -4° | 8 | 5 | 20 | 88 mm | Awful | Viljandimaa in December |