Monsoon is just the rainy season in India, not a disaster. Occasionally there is flooding, including last year in Kerala (the state Kochi is in), and the state needs tourists to boost the economy.
I'm at Coimbatore airport right now (CJB) after s 5 day trip into the hills around Kodaikanal, not that far from Kochi in fact. Absolutely stunning scenery and no disasters (other than hangovers and a lost SIM card).
During the monsoon the weather tends to be cooler and more pleasant while the nature is greener and lusher.
Long story short, not sure what your point is or what value this thread is intended to contribute.