Monsoon rains are likely to enter India through the southern coast around June 1, the weather office said on Thursday, marking the start of the four-month rainy season.Weather conditions are “very likely to become favourable from June 1, 2020” for the monsoon onset over Kerala, the India Meteorological Department (IMD) said in a statement.The IMD had earlier forecast the arrival of monsoon rains over Kerala on June 5, four days later than usual.