The best time to visit Kolukkumalai is September - March, giving you a sense of pleasant winter. While the weather is great here throughout the year, summers here are not as scenic as September - March. It still makes for a great summer get away but is avoidable during the foggy, heavy monsoons.
| Month | High/Low (°C) | Rain |
|---|---|---|
| January | 22°/ 10° | 4 days |
| February | 22°/ 10° | 4 days |
| March | 23°/ 12° | 13 days |
| April | 25°/ 13° | 18 days |
| May | 26°/ 15° | 28 days |
| June | 24°/ 15° | 18 days |
| July | 21°/ 14° | 20 days |
| August | 19°/ 13° | 30 days |
| September | 21°/ 13° | 29 days |
| October | 20°/ 12° | 29 days |
| November | 20°/ 12° | 24 days |
| December | 20°/ 11° | 15 days |