Tthe best time to visit Kotagiri is between December to February, when the winter is at its peak. The days are chilly, and temperatures range between 9 degrees C to 19 degrees C, comfortable and pleasant.
| Month | High/Low (°C) | Rain |
|---|---|---|
| January | 23°/ 12° | 7 days |
| February | 24°/ 12° | 3 days |
| March | 25°/ 14° | 12 days |
| April | 27°/ 15° | 13 days |
| May | 28°/ 17° | 28 days |
| June | 26°/ 16° | 19 days |
| July | 24°/ 15° | 18 days |
| August | 23°/ 15° | 23 days |
| September | 23°/ 15° | 27 days |
| October | 22°/ 14° | 31 days |
| November | 22°/ 13° | 22 days |
| December | 21°/ 13° | 11 days |