The southwest monsoon has arrived in Kerala before its onset schedule, private agency Skymet Weather announced on Saturday, but India's official forecaster IMD said conditions are not yet ripe for the declaration. Skymet Weather said all conditions such as rainfall, Outwave Longwave Radiation value and wind speed have been met to declare the arrival of the monsoon.

from Times of India https://timesofindia.indiatimes.com/india/skymet-announces-arrival-of-monsoon-over-kerala-imd-differs/articleshow/76107166.cms