A severe heatwave is scorching the districts of Chuadanga and Bagerhat while a mild to moderate heat wave is sweeping over Rajshahi, Mymensingh, Dhaka, and parts of Khulna, Barisal, Chittagong and Sylhet divisions, according to weather office.
The severity may ease in some other places, said a Met Office bulletin.
Rain or thunder showers accompanied by temporary gusty or squally wind is likely to occur at one or two places over Chittagong and Sylhet divisions with hails at isolated places, said a regular bulletin of Bangladesh Meteorological Department (BMD).
Weather may remain mainly dry with temporary partly cloudy sky elsewhere over the country.
Day and night temperatures may remain nearly unchanged over the country.