More rains are likely to drench Bangladesh in 24 hours commencing 9 am on Sunday as a low pressure area has formed over the North Bay and adjoining central Bay, said the weather department.

"Light to moderate rain or thunder showers accompanied by temporary gusty wind and lightning flashes is likely at many places over Rangpur, Rajshahi, Dhaka, Mymensingh, Khulna, Barishal, Chattogram and Sylhet divisions with moderately heavy to heavy falls at places over the country," said a Met Office bulletin.

Rainfall activity may continue in next three days.

Day temperature may fall by 1-3°C and night temperature may fall slightly over the country, it added.

Dhaka recorded 9mm rainfall on Sunday morning.

The weather office recorded the highest 50 mm rainfall in Sreemangal of Sylhet division in 24 hours till 6am on Sunday.

The mercury reached 36.5 degrees Celsius - the highest - in Tarash of Rajshahi and in Sayedpur of Rangpur, while the minimum temperature was recorded at 21.0 degrees in Kumarkhali of Khulna division.

Meanwhile, the axis of monsoon trough runs through East Uttar Pradesh, Bihar, West Bengal to Assam across central part of Bangladesh.

Monsoon is fairly active over Bangladesh and moderate elsewhere over North Bay, as per the bulletin.