The government warns of heatstroke as temperatures in many areas may reach 42-43°C, potentially continuing until mid-May. It notes some places might experience heat indices as high as 60°C. People are advised to avoid intense sunlight, stay hydrated, and seek immediate hospital care if abnormalities occur.
On 21 April 2026, Ms. Lalida Perdivattana, Deputy Spokesperson of the Office of the Prime Minister, announced that air temperatures have been rising steadily since late February this year and are expected to continue until mid-May, with many areas potentially reaching 42-43 degrees Celsius. This increase raises the risk of heat-related illnesses, particularly "heatstroke." The risk of such conditions has increased significantly.
According to data from the Digital Disease Surveillance system (DDS) of the Department of Disease Control, Ministry of Public Health, in 2025 there were 182 cases related to heat illnesses, with 59.3% male patients. Most cases occurred in the working-age group of 15-34 years old, totaling 78 cases. Among the elderly aged 60 and above, 29 cases were reported, with 53.3% being outdoor workers.
Regarding common symptoms include heat exhaustion, heat syncope, heat cramps, and heatstroke. Surveillance data on heat-related deaths from the Epidemiology Division shows the Northeast region accounts for the highest proportion at 52%. Chronic patients, such as those with hypertension and diabetes, should be especially cautious.
"This April, Thailand is experiencing prolonged extreme heat. The Heat Index in some areas may reach 60 degrees Celsius, which is extremely dangerous. The public is urged to avoid prolonged sun exposure, drink plenty of water, and closely monitor their condition. If abnormal symptoms such as very high body temperature, red skin, lack of sweating, dizziness, nausea, vomiting, rapid heartbeat, confusion, weakness, or loss of consciousness occur, they should be taken to the hospital immediately or call emergency number 1669 for assistance."