The arrival of monsoon over Kerala is likely to be delayed by two days and it is now expected to make an onset over the state by June 3, the India Meteorological Department (IMD) said on Sunday.

IMD Director General M Mohapatra said there is cyclonic circulation along the Karnataka coast which is hindering the progress of the southwest monsoon.

"The southwesterly winds could strengthen further gradually from June 1, resulting in likely enhancement in rainfall activity over Kerala. Hence the monsoon onset over Kerala is likely to take place around June 3," the IMD said.

Due to strengthening of lower level southwesterly winds, fairly widespread rainfall activity with isolated heavy falls are very likely over northeastern states during the next five days.

The normal onset date for the southwest monsoon over Kerala is June 1. This marks the start of the four-month rainfall season for the country.

Earlier this month, the IMD had predicted the arrival of monsoon over Kerala by May 31 with an error margin of plus or minus five days.

The Southwest monsoon, which brings more than 75 per cent of rainfall to the country, is expected to be normal this year, the IMD had said earlier.