Light to heavy rainfall is likely to occur in many parts of the country including Dhaka, according to a Met Office bulletin.
Bangladesh Meteorological Department (BMD) in its 24-hour bulletin said light to moderate rain/thunder showers accompanied by temporary gusty wind is likely to occur at most places over Dhaka, Mymensingh, Barishal, Chattogram and Sylhet divisions and at many places over Rangpur, Rajshahi and Khulna divisions with moderately heavy to heavy falls at places over the country.
The Met Office bulletin, valid for 24-hour from 6 pm on Tuesday, also said southwest monsoon has advanced up to Chattogram, Barishal, Dhaka, Sylhet and Mymensingh divisions.
Conditions are favourable for further advancement of Southwest monsoon over remaining parts of the country, it said, adding that monsoon is active over eastern part of the country and moderate over Northeast Bay.
However, a mild heat wave is sweeping over the regions of Faridpur, Rajshahi, Pabna, Sirajganj and Kushtia and it may abate, the BMD forecast said.
Day temperature may fall by (1-2) °C and night temperature may fall slightly over the country, it added.