| Month | Daily minimum (°C) | Daily maximum (°C) | Days of rain | Rainfall (mm) |
|---|---|---|---|---|
| January | 13.2 | 21.3 | 9.4 | 44.7 |
| February | 13.8 | 21.5 | 8.4 | 41.9 |
| March | 13.2 | 20.2 | 11.9 | 54.9 |
| April | 11.6 | 17.9 | 14.7 | 71.1 |
| May | 10.0 | 15.5 | 17.8 | 91.1 |
| June | 8.4 | 13.6 | 18.5 | 97.7 |
| July | 7.5 | 12.9 | 19.7 | 105.1 |
| August | 7.8 | 13.8 | 19.8 | 102.3 |
| September | 8.5 | 15.1 | 18.1 | 90.5 |
| October | 9.5 | 16.8 | 16.4 | 81.5 |
| November | 10.7 | 18.2 | 13.4 | 64.0 |
| December | 12.0 | 19.8 | 11.7 | 52.6 |
| Statistics provided by BOM for Cape Otway Lighthouse (nearest comparable weather site to Cape Otway) | ||||