Since the south west monsoon is to commence soon in Kerala, the intensity of heat in Tamil Nadu is likely to decline.
Chennai Meteorological Centre has mentioned as follows: The south west monsoon rains in Kerala will begin in a couple of days. Because of this cool breeze will be blowing towards Tamil Nadu. The temperature in Tamil Nadu will decline. There will be rains in Coimbatore, Erode, Dharmapuri and Dindigul districts. Rains are likely to occur in Tamil Nadu in one or two places. As far as Chennai is concerned the sky will be cloudy and there will be rains or thunder showers in the evening and the nights.