The Centre for Health Protection (CHP) of the Department of Health on 19 September 2026 reminded the public to guard against heat-related illnesses, including heat cramps, heat exhaustion and heat stroke, during very hot weather. It advised timely hydration, light-coloured and loose clothing, well-ventilated indoor spaces, and avoiding strenuous exercise and prolonged activities such as hiking. Outdoor activities should where possible be scheduled for the morning or late afternoon, and caffeinated or alcoholic drinks avoided.

The CHP said infants and children, the elderly, pregnant women, people with chronic illnesses such as heart disease or high blood pressure, overweight people and outdoor or manual workers are more susceptible to heat stroke. It advised keeping young children out of high temperatures and never leaving them unattended in confined spaces such as vehicles, and urged vulnerable groups to monitor health indicators and keep in contact with family, neighbours and the community. Outdoor and manual workers were advised to reschedule work to cooler hours where feasible and take breaks in shade.

According to the CHP, Hong Kong has recorded over 200 hospital admissions due to heat stroke each year over the past five years, with two to five fatal cases occurring mainly between May and September. Symptoms include dizziness, headache, nausea, shortness of breath and confusion. When the ultraviolet index is 6 or above, the CHP advised seeking shade, using sunscreen and covering up.