Click on a day for an hourly weather forecast
The temperatures in Castlemaine in September are quite cold with temperatures between 5°C and 16°C, warm clothes are a must.
You can expect about 3 to 8 days of rain in Castlemaine 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 Castlemaine in September 2025.
If you’re planning to visit Castlemaine in the near future, we highly recommend that you review the 14 day weather forecast for Castlemaine before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 31° / 16° | 2 | 29 | 0 | 53 mm | Good | Castlemaine in January |
| February | 29° / 15° | 2 | 26 | 0 | 63 mm | Good | Castlemaine in February |
| March | 26° / 14° | 2 | 29 | 0 | 48 mm | Perfect | Castlemaine in March |
| April | 21° / 10° | 2 | 28 | 0 | 41 mm | Good | Castlemaine in April |
| May | 16° / 7° | 3 | 28 | 0 | 48 mm | Good | Castlemaine in May |
| June | 13° / 5° | 3 | 27 | 0 | 50 mm | Ok | Castlemaine in June |
| July | 12° / 4° | 4 | 27 | 0 | 64 mm | Ok | Castlemaine in July |
| August | 13° / 4° | 5 | 26 | 0 | 74 mm | Ok | Castlemaine in August |
| September | 16° / 5° | 3 | 27 | 0 | 67 mm | Good | Castlemaine in September |
| October | 20° / 7° | 4 | 27 | 0 | 69 mm | Good | Castlemaine in October |
| November | 24° / 11° | 4 | 26 | 0 | 61 mm | Perfect | Castlemaine in November |
| December | 28° / 13° | 3 | 28 | 0 | 55 mm | Perfect | Castlemaine in December |