Click on a day for an hourly weather forecast
The temperatures in Colac in September are quite cold with temperatures between 6°C and 15°C, warm clothes are a must.
You can expect about 3 to 8 days of rain in Colac 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 Colac in September 2025.
If you’re planning to visit Colac in the near future, we highly recommend that you review the 14 day weather forecast for Colac before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 25° / 12° | 3 | 28 | 0 | 60 mm | Perfect | Colac in January |
| February | 24° / 13° | 3 | 25 | 0 | 59 mm | Perfect | Colac in February |
| March | 22° / 12° | 4 | 27 | 0 | 63 mm | Good | Colac in March |
| April | 19° / 10° | 4 | 26 | 0 | 65 mm | Good | Colac in April |
| May | 15° / 8° | 5 | 27 | 0 | 75 mm | Good | Colac in May |
| June | 13° / 6° | 5 | 25 | 0 | 76 mm | Ok | Colac in June |
| July | 12° / 6° | 5 | 26 | 0 | 77 mm | Ok | Colac in July |
| August | 13° / 5° | 6 | 25 | 0 | 96 mm | Ok | Colac in August |
| September | 15° / 6° | 5 | 25 | 0 | 89 mm | Good | Colac in September |
| October | 18° / 7° | 5 | 26 | 0 | 83 mm | Good | Colac in October |
| November | 21° / 9° | 5 | 26 | 0 | 84 mm | Good | Colac in November |
| December | 22° / 10° | 4 | 27 | 0 | 63 mm | Good | Colac in December |