A mild heatwave sweeping through several districts of the country is likely to abate in the next 24 hours, the weather department has said.

"A mild heatwave sweeping through the districts of Dhaka, Tangail, Rajshahi, Bogura, Sirajgong, Netrokona,Srimangal and Sylhet may abate from some places," the weather department said in its bulletin on Saturday morning.

The low formed over the west-central Bay and adjoining northwest Bay persists and is likely to intensify, according to the Bangladesh Meteorological Department.

Under its influence, a deep convection is taking place over the North Bay and adjoining areas. Deep convection refers to the thermally driven turbulent mixing that moves air parcels from the lower to the upper atmosphere.

Besides, light to moderate rains or thundershowers accompanied by temporary gusty winds and lightning flashes are likely to occur at many places over Dhaka, Khulna, Barishal, Chattogram and Sylhet divisions.

Rain may also occur at a few places over Rangpur, Rajshahi and Mymensingh divisions with moderately heavy to heavy falls at places over the country.

Day and night temperatures may fall slightly over the country during the period.

The maximum temperature in the last 24 hours till 6 am Saturday was recorded in Sylhet at 37.2 degrees.