Question

what are mango showers

Answer 1

Mango showers, or 'mango rains', is a colloquial term to describe the occurrence of pre-monsoon rainfall. Sometimes these rains are referred to generically as 'April rains' or 'Summer showers'. They are notable across much of South and Southeast Asia, including India, and Cambodia.

Answer 2

These are the type of shower received for the early ripening of the mangoes.
They are the pre monsoon rains or April rains received.