Chennai weather is quite hot and humid as it locates close to the thermal equator.
Summers (March to May) are warm and sweating soaring the temperature to more than 40 °C.
Monsoons (June to August) and Post Monsoons (September to November) are moderate with mild to heavy winds and rains.
Winters (December to February) are the maximum coolest months soaring temperature about 20 °C.
The perfect time to visit Chennai is from September to March, specifically the winters.