The mild to moderate heat wave blazing across Bangladesh's Rajshahi and Khulna divisions along with Dhaka region may continue for two more days, the Met Office said on Monday.
A severe heat wave sweeping over Kushtia region may also continue, the forecast said.
The heat wave is the first of the season, bdnews24 reported citing the weather office.
Sunday's highest temperature was recorded at 40.3 degrees Celsius in Chuadanga. It was 36 degrees Celsius in Dhaka.
According to the weather forecast, the mild to moderate heat wave that is also sweeping over Rangpur, Dinajpur, Syedpur, Tangail and Faridpur regions also may continue and spread over adjacent areas.
The weather was unlikely to change much over the next two days, it said.