A prolonged heatwave is set to continue across Bangladesh for the next four to five days, with Rajshahi experiencing the most severe conditions, according to the Bangladesh Meteorological Department.
Meteorologist Md Shaheenul Islam said the current spell, described as the longest of the year so far, is expected to persist until 25 April, ease slightly after 26 April, and may continue in parts of the country until 28 or 29 April. He added that one or two further heatwave spells could occur in May, as such conditions are typical between March and May.
Rajshahi has recorded the highest temperatures, reaching 40°C on Wednesday, while the lowest temperature on Thursday was 19.5°C in Sylhet. Mild to moderate heatwave conditions are affecting large areas, including Rajshahi and Khulna divisions, as well as districts such as Dhaka, Tangail, Faridpur, Madaripur, Dinajpur, Brahmanbaria, Lakshmipur, Rangamati and Bandarban.
The Met Office said weather conditions are likely to remain mainly dry with partly cloudy skies across most regions. However, isolated rain or thundershowers, accompanied by gusty winds and lightning, are expected in parts of Mymensingh and Sylhet divisions over the next 24 hours, with a higher chance of rainfall after 26 April. Day temperatures are expected to remain largely unchanged, while night temperatures may rise slightly.
Health experts have warned of increased risks associated with extreme heat, particularly for children and older people. They advised avoiding outdoor exposure during peak hours unless necessary and stressed the importance of staying hydrated.
Dr Md Abdul Kader, Associate Professor of Paediatrics at Dhaka Medical College Hospital, said children are especially vulnerable to heat-related illnesses such as heatstroke, dehydration, fever and gastrointestinal conditions. He noted that children often struggle to express discomfort, making it essential for caregivers to monitor them closely.
Medical professionals recommend regular intake of water and fluids, including coconut water, lemon drinks and homemade fruit juices, to maintain hydration and electrolyte balance. They also advise wearing light, loose-fitting clothing and avoiding direct sunlight, particularly between 11:00 and 16:00.
Dr Hasan Hafizur Rahman, Associate Professor of Medicine at the same hospital, warned that cases of diarrhoea, jaundice and other infections tend to increase during hot weather due to heightened bacterial activity. He cautioned against consuming street food and stressed the need for fresh, hygienic meals prepared at home.
Public health officials have issued guidance to healthcare workers to raise awareness about heat-related risks. Dhaka Civil Surgeon Dr Mohammad Zillur Rahman urged people to drink sufficient safe water, avoid tea and coffee, and use protective measures such as umbrellas or hats when outdoors.
Public health expert Dr Mohammad Mushtuq Husain emphasised that preventing dehydration and keeping the body cool are the most effective ways to reduce heat-related health risks. He advised limiting exposure to direct sunlight and avoiding work near heat sources during peak hours.
The meteorological department said the current weather pattern is likely to persist, with heatwave conditions continuing across several regions in the coming days.
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