| Month | Amount of rainfall in Makkah (mm) | Amount of rainfall in Al-Taif (mm) | ||||||
| 1986 | 1990 | 2000 | 2013 | 1986 | 1990 | 2000 | 2013 | |
| Jan | 0 | 10 | 3 | 6.5 | 0 | 0 | 0 | 0 |
| Feb | 2.9 | 0 | 0 | 0 | 13.4 | 0 | 0 | 0 |
| Mar | 24 | 0 | 0 | 0 | 14.5 | 8.7 | 13.7 | 5.3 |
| Apr | 2.2 | 8.9 | 0.2 | 8.6 | 28 | 46.6 | 11.7 | 58.6 |
| May | 0 | 0 | 0 | 0.7 | 7 | 6.3 | 54.8 | 20.6 |
| Jun | 0 | 0 | 0 | 0 | 22 | 0 | 0 | 0 |
| Jul | 0 | 0 | 9.2 | 0 | 4.1 | 0 | 12.5 | 0 |
| Aug | 3 | 0 | 0 | 16.7 | 15.9 | 9.2 | 1.3 | 22.9 |
| Sep | 2 | 0 | 0 | 9.2 | 55.1 | 7.9 | 0.9 | 0 |
| Oct | 0 | 0 | 12.4 | 0 | 13.4 | 0 | 3.4 | 2.6 |
| Nov | 6 | 0 | 112.5 | 1.2 | 1 | 0 | 37.7 | 0 |
| Dec | 0 | 0 | 2.2 | 5.2 | 0 | 0 | 2.1 | 1 |
| Total | 40.1 | 18.9 | 139.5 | 48.1 | 174.4 | 78.7 | 138.1 | 111 |