Skymet said monsoon will be “below normal” in the country with a Long Period Average (LPA) of 93 per cent and an error margin of five per cent. (Representational image)

New Delhi: Monsoon is likely to arrive in Kerala on June 4, three days after its normal onset date, marking the official commencement of the rainy season in the country, private weather forecaster Skymet said on Tuesday.

The normal onset date for monsoon over Kerala is June 1.

Skymet said monsoon will be “below normal” in the country with a Long Period Average (LPA) of 93 per cent and an error margin of five per cent.

“Arrival of monsoon over Andaman and Nicobar Islands will be on May 22, with an error margin of plus/minus 2 days. Southwest Monsoon 2019 is likely to make onset over Kerala on June 4, with an error margin of plus/minus 2 days.

“It seems that initial advancement of monsoon over peninsular India is going to be slow,” Skymet CEO Jatin Singh said.

“All the four regions are going to witness lesser than normal rainfall this season,” Mr Singh said.