The southwest monsoon is likely to make onset over parts of south Bay of Bengal, Andaman Sea and Andaman & Nicobar Islands towards the end of this week, India Meteorological Department (IMD) said on Tuesday. Monsoon normally advances over northeast India around June 5. (Representative Photo/PTI) “Conditions are becoming favourable for onset of southwest monsoon likely over parts of south Bay of Bengal, Andaman Sea and Andaman & Nicobar Islands towards the end of this week. The low-pressure area over southwest Bay of Bengal lay over the same region at 8.30am of today, the 12 May 2026, with the associated cyclonic circulation extending up to 4.5km above mean sea level. It is likely to become more marked during the next 48hours,” IMD said. Officials however said they cannot forecast monsoon onset over Kerala immediately. “We are hoping to issue onset forecast for Kerala on or around May 15,” said M Mohapatra, director general, IMD. June 1 is the normal date for monsoon onset in Kerala. The monsoon later advances northwards, usually in surges, and covers …