March-April or October-November are a delight, with clear, warm days and mild nights. Sydney is blessed with a temperate climate and averages summer temperatures of around 25°C (77°F). It can get up to 40°C (104°F) on a hot day, and high humidity can make it oppressive, but torrential downpours often break the heat between October and March. Winters are cool rather than cold. Beach lovers unperturbed by the hazards of lizard skin and melanomas should come between December and February.
| Month | Temp (°C) | Rainfall (mm) | Humidity (%) | Sunshine (hours) |
| Jan | 18 - 26 | 89 | 7 | |
| Feb | 18 - 26 | 102 | 7 | |
| Mar | 17 - 24 | 127 | 6 | |
| Apr | 14 - 22 | 135 | 6 | |
| May | 11 - 19 | 127 | 6 | |
| Jun | 9 - 16 | 117 | 5 | |
| Jul | 8 - 16 | 117 | 6 | |
| Aug | 9 - 17 | 76 | 7 | |
| Sep | 11 - 19 | 74 | 7 | |
| Oct | 13 - 22 | 71 | 8 | |
| Nov | 16 - 23 | 74 | 7 | |
| Dec | 17 - 25 | 74 | 8 |