Why is the highest monthly temperature in South Asia in April?

Latitude is relatively low in most parts of South Asia, and the average solar height is relatively high at noon all the year round. Located in the tropics, it belongs to the tropical monsoon climate. The hottest months in the tropical monsoon climate are April and May, not July, mainly because this period is a dry season with less precipitation and sunny weather. In addition, the height of the sun is relatively high at noon, the solar radiation is relatively strong, and the temperature is very high.

The tropical monsoon climate zone in June is rainy season, and rainy weather weakens the solar radiation reaching the ground, and the temperature is relatively low.