| Month | Daily minimum (°C) | Daily maximum (°C) | Days of rain | Rainfall (mm) |
|---|---|---|---|---|
| January | 14.0 | 25.5 | 7.9 | 45.8 |
| February | 14.2 | 26.0 | 6.7 | 44.9 |
| March | 12.8 | 23.6 | 9.3 | 45.6 |
| April | 10.4 | 20.0 | 11.5 | 63.1 |
| May | 8.6 | 16.9 | 14.7 | 72.0 |
| June | 6.7 | 14.2 | 15.1 | 56.7 |
| July | 6.0 | 13.6 | 17.0 | 63.7 |
| August | 6.8 | 14.8 | 16.8 | 67.7 |
| September | 7.9 | 16.8 | 14.8 | 67.1 |
| October | 9.1 | 19.0 | 14.2 | 71.3 |
| November | 10.8 | 21.3 | 12.2 | 61.4 |
| December | 12.5 | 23.8 | 10.1 | 57.7 |
| Statistics provided by BOM for Moorabbin Airport (nearest comparable weather site to Chelsea) | ||||