| Kuala Selangor Wetland | |||||||||
| Rainfall(mm) | Temperature(Celcius) | Relative Humidity | |||||||
| (%) | |||||||||
| Month | Average | Highest | Average | Average | Average | Highest | Lowest | Average | Average |
| monthly | recorded | no. of | daily at | daily at | recorded | recorded | daily at | daily at | |
| raindays | 0800 | 1400 | 0800 | 1400 | |||||
| Jan | 120.4 | 215.6 | 10 | 23.3 | 27.8 | 33.3 | 19.8 | 91 | 71 |
| Feb | 83.8 | 345.8 | 9 | 23.6 | 28.8 | 34.4 | 18.7 | 92 | 70 |
| Mar | 120.4 | 224.9 | 12 | 24.2 | 29.5 | 35.0 | 20.0 | 92 | 69 |
| Apr | 155.7 | 292.4 | 14 | 24.3 | 28.9 | 34.0 | 18.4 | 93 | 72 |
| May | 121.1 | 225.1 | 13 | 24.5 | 29.0 | 35.4 | 20.0 | 91 | 72 |
| Jun | 76.2 | 164.5 | 8 | 24.3 | 29.4 | 35.5 | 20.0 | 91 | 71 |
| Jul | 91.5 | 232.2 | 9 | 24.4 | 29.8 | 34.6 | 18.2 | 91 | 69 |
| Aug | 101.0 | 205.6 | 10 | 24.4 | 29.8 | 34.7 | 20.0 | 92 | 69 |
| Sep | 157.4 | 256.0 | 13 | 23.2 | 28.1 | 33.5 | 20.6 | 93 | 71 |
| Oct | 173.8 | 269.8 | 16 | 24.2 | 29.2 | 32.8 | 19.5 | 94 | 72 |
| Nov | 182.2 | 354.1 | 17 | 24.3 | 28.5 | 33.3 | 20.0 | 93 | 77 |
| Dec | 222.9 | 599.4 | 17 | 24.0 | 28.8 | 33.3 | 20.4 | 93 | 73 |