Question

why is the southern part of India relatively hotter than the northern part​

Answer 1

Answer:

because in north there is Himalayas

Answer 2

Answer:

Water has a high specific heat capacity so it loses heat slowly. Most of the area of the southern part of india is ocean. The oceans warm up in the summer and retain heat during the winter.

The northern part of India has much more land mass which loses its heat quickly. This is demonstrated by the continental effect where the central regions of the northern part have very cold winters.

Secondly northern part has Himalayas

thirdly southern hemisphere is near equator

HOPE it will help