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News from Malaysia highlights a critical health concern: rising wet-bulb temperatures. This phenomenon combines high heat and humidity, creating risky conditions that substantially elevate the risk of heatstroke. Experts warn that even at seemingly moderate temperatures, the impact of wet-bulb temperature can pose health risks, notably for vulnerable populations like the elderly and outdoor workers.Staying informed about primary_keyword and taking secondary_keyword precautions,such as staying hydrated and avoiding prolonged sun exposure,is essential. News Directory 3 provides complete updates on these crucial developments. Learn how the medical community is responding and how you can protect yourself during this period of increased risk, and discover what’s next to come.
Malaysia braces for Wet-Bulb Temperature Threat amid Rising Heat
Updated June 9, 2025
As malaysia anticipates increased heat in the coming months, experts are warning of a significant threat: wet-bulb temperature (WBT). This phenomenon, where high humidity hinders the body’s ability to cool itself, can lead to hazardous and even fatal conditions.
Prof. Dr. Sharifa ezat Wan Puteh of Universiti Kebangsaan Malaysia (UKM) noted that studies indicate WBT can pose a risk even at temperatures as low as 31°C. The U.S. National Weather Service considers WBT of 31°C or higher to be in the “extreme danger” category.
Certain populations face heightened risk, including the elderly, pregnant women, children, outdoor workers, and those with pre-existing health conditions. Simple precautions can definitely help, Sharifa said, such as staying in shaded areas, drinking plenty of fluids, limiting physical activity and outdoor exposure, and wearing light, breathable clothing to reduce the risk of hyperthermia.
Sustained temperatures between 31°C and 35°C, combined with humidity above 90%, create conditions for WBT. If core body temperature reaches 42°C or higher, extreme hyperthermia can occur, often proving fatal.
On June 2, the Meteorological Department (MetMalaysia) issued a Level 1 advisory for six areas in Peninsular Malaysia, where maximum daily temperatures ranged between 35°C and 37°C for three consecutive days.
Universiti Malaya (UM) public health medicine specialist Prof. Dr. Victor hoe expressed concern about the prolonged heat and humidity. “What we’re facing is more than just uncomfortable weather,” Hoe said. “this is a growing public health and safety concern that requires attention, empathy and coordinated action.”
Hoe explained that the body typically regulates temperature through sweat evaporation. Though, high humidity impairs this process, leading to overheating. Signs of heat exhaustion or heatstroke include tiredness, dizziness, nausea, confusion, rapid pulse, and unconsciousness.
To combat these risks, Hoe advises consistent hydration, avoiding outdoor activity between 12 p.m.and 3 p.m.,wearing loose,light-colored clothing,and seeking shaded or air-conditioned environments. He also urged people to check on elderly neighbors and family members, especially those living alone.
UM’s Public Health Medicine Specialist prof. Dr. sanjay Rampal described WBT as a public health threat, even at temperatures below 35°C.
“Currently, MetMalaysia’s three-tier alert system focuses only on dry-bulb temperature but does not account for the role of humidity. We may consider a heat index that combines temperature and humidity measurements,” Dr. Sanjay said.
Dr. Sanjay suggested MetMalaysia collaborate with relevant agencies to translate meteorological data into specific health advisories. He also cautioned against leaving children or elderly relatives unattended in parked vehicles.
What’s next
Agencies are urged to collaborate on public awareness campaigns regarding extreme heat exposure and wet-bulb temperature. The Department of Occupational Safety and Health (DOSH) should advise officers to keep workers out of open, exposed areas.