The climate of Coimbatore city is moderate and pleasant throughout the year with little temperature variation between the seasons. Summers are hot with the mercury reaching to 39°C, the dip in the summer to as low as 23°C. In winter the climate is mild with the maximum temperature hovering around 33°C and the minimum temperature rarely going below 21°C. Coimbatore being in Tamil Nadu, does not receive rain during South-west (June to September) monsoon season, that's why it is known as "Rain Shadow Area".
| The seasons of Coimbatore are devised as follows:- | ||
| Dec to Feb : | Mild winter Season | |
| Mar to May : | Pre monsoon Season | |
| Jun to Sep : | South west monsoon season | |
| Oct to Nov : | Post monsoon season | |
Coimbatore experiences rains in October-November, which is brought about by the retreating monsoons/post monsoon season (North-Eastern monsoon). Although these rainfalls are not enough for the entire year, small rivers like Siruvani and Atthikadavu fulfill water need of the city.
