Athens has a typically Mediterranean climate. In July and August, the mercury can soar to 40°C (100+°F) in the shade, but relief can be found in the meltemi, a strong northerly wind that sometimes sweeps the eastern coast of mainland Greece.
| Month | Temp (°C) | Rainfall (mm) | Humidity (%) | Sunshine (hours) |
| Jan | 6 - 13 | 62 | 4 | |
| Feb | 7 - 14 | 37 | 5 | |
| Mar | 8 - 16 | 37 | 6 | |
| Apr | 11 - 20 | 23 | 8 | |
| May | 16 - 25 | 23 | 9 | |
| Jun | 20 - 30 | 14 | 11 | |
| Jul | 23 - 33 | 6 | 12 | |
| Aug | 23 - 33 | 7 | 12 | |
| Sep | 19 - 29 | 15 | 9 | |
| Oct | 15 - 24 | 51 | 7 | |
| Nov | 12 - 19 | 56 | 5 | |
| Dec | 8 - 15 | 71 | 4 |