KUCHING: Health experts are urging the public to remain vigilant as prolonged exposure to high temperatures may pose serious risks, with Sarawak’s hot and humid conditions increasing cases of dehydration, heat exhaustion, and heatstroke.
The warning comes as the heatwave currently affecting the country is expected to last until June, with temperatures forecast to peak between mid-March and mid-April.
The Malaysian Meteorological Department (MetMalaysia) said temperatures could reach between 37 and 38 degrees Celsius, particularly in northern Peninsular Malaysia during this period, although hot and humid conditions are also being felt across parts of Sarawak.
The department attributed the phenomenon to reduced cloud cover and the sun’s more direct position over the region towards the end of the northeast monsoon season, resulting in higher daytime temperatures and warmer nights.
Medical officer at the Ministry of Health, Dr Jawing Chunggat, said prolonged exposure to heat without adequate hydration or rest could lead to serious health complications if early symptoms are ignored.
“Prolonged heat exposure may worsen existing conditions such as heart disease, kidney problems and asthma, while also causing fatigue, dizziness and reduced concentration,” he said when contacted.
He said young children, the elderly, pregnant women and individuals with chronic illnesses are among the most vulnerable during extreme heat conditions and should be closely monitored during periods of sustained hot weather.
Dr Jawing also advised outdoor workers, including farmers, construction workers and delivery riders, to take extra precautions by avoiding peak heat hours between 11 am and 4 pm whenever possible.
“They should drink sufficient water throughout the day, take regular breaks in shaded areas, and avoid prolonged physical exertion under direct sunlight,” he said.
He added that early signs of heat exhaustion include heavy sweating, weakness, headache, dizziness, nausea and muscle cramps, which should not be ignored as they may worsen if left untreated.
“Heatstroke is more serious, presenting with confusion, reduced consciousness, hot, dry skin and very high body temperature, requiring immediate cooling and urgent medical attention,” he stressed.
Dr Jawing also recommended simple daily practices such as drinking water regularly even when not thirsty, limiting sugary or caffeinated beverages, and staying indoors during the hottest hours of the day.
He said wearing loose, light-coloured clothing, ensuring proper ventilation at home or workplaces, and taking cool showers could help reduce body heat and prevent complications during prolonged hot weather.
He further emphasised the importance of monitoring children and the elderly, as they are more susceptible to dehydration and heat-related illnesses due to weaker temperature regulation and lower fluid intake.
“Ensure children remain hydrated and avoid prolonged outdoor activity, while the elderly should have easy access to drinking water and stay in a cool and well-ventilated environment,” he added.
Members of the public are also encouraged to remain alert to weather updates issued by MetMalaysia and seek early medical attention if symptoms related to heat stress begin to appear.
