The rainfall due to connective activity or otherwise was not enough to fulfill the criterion for declaring onset of Monsoon over Kerala.
The precipitation was not enough and hence we may have to wait further indicating delayed onset of Monsoon over Kerala.
For Monsoon to set and advance further into India, the N-India and Central India should heat up sufficiently creating a pressure gradient which is already present but due to onset of a strong WD the advancement of SW Monsoon into India is under threat.
The established monsoon current being weak is affected and dominated by a CYCIR over Pakistan tilting NW to E India drifting southwards.
Below is an image the NLM(Northern Limits of Monsoon)as per IMD (India Meteorological Department) is re-shared below::-
Always refer to IMD for weather forecast.

