Click on a day for an hourly weather forecast
The weather in Thredbo in September is very cold with temperatures between 0°C and 13°C, warm clothes are a must.
You can expect about 3 to 8 days of rain in Thredbo 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.
Please note that Thredbo can expect a few days of snow in September.
Our weather forecast can give you a great sense of what weather to expect in Thredbo in September 2025.
If you’re planning to visit Thredbo in the near future, we highly recommend that you review the 14 day weather forecast for Thredbo before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 24° / 9° | 5 | 26 | 0 | 101 mm | Perfect | Thredbo in January |
| February | 23° / 9° | 6 | 23 | 0 | 119 mm | Perfect | Thredbo in February |
| March | 21° / 8° | 5 | 26 | 0 | 82 mm | Good | Thredbo in March |
| April | 17° / 5° | 4 | 26 | 0 | 71 mm | Good | Thredbo in April |
| May | 12° / 1° | 4 | 27 | 1 | 67 mm | Ok | Thredbo in May |
| June | 9° / -1° | 6 | 23 | 1 | 102 mm | Ok | Thredbo in June |
| July | 8° / -2° | 8 | 22 | 2 | 99 mm | Awful | Thredbo in July |
| August | 9° / -2° | 8 | 20 | 3 | 132 mm | Awful | Thredbo in August |
| September | 13° / 0° | 6 | 23 | 1 | 108 mm | Ok | Thredbo in September |
| October | 17° / 2° | 7 | 24 | 0 | 129 mm | Ok | Thredbo in October |
| November | 19° / 5° | 7 | 23 | 0 | 115 mm | Ok | Thredbo in November |
| December | 21° / 7° | 6 | 25 | 0 | 97 mm | Good | Thredbo in December |