Tips for Staying Safe in This Heatwave

Singapore has been experiencing intense heat, with daily maximum temperatures reaching 34°C to 36°C in April 2026¹. High temperatures, combined with our island’s high humidity, significantly increases the risk of heat exhaustion and heat stroke.

How to monitor heat risk

The best way to gauge the risk is the Wet Bulb Globe Temperature (WBGT)², available on the myENV app. This reading is more accurate than standard temperature because it accounts for humidity and wind.

• WBGT (°C) ≥ 33: Normal activity is generally safe.
• 31 ≤ WBGT (°C) < 33: Moderate risk. Reduce strenuous outdoor work or exercise.
• WBGT (°C) < 31: High risk. Avoid or postpone outdoor activities where possible.

Three essential steps for protection

1. Hydrate regularly: Drink water every hour, even if you do not feel thirsty. Avoid excessive caffeine or alcohol, as these can lead to faster dehydration.
2. Dress for the weather: Wear loose-fitting, light-coloured clothing made from natural fibres like cotton or linen.
3. Plan your day: Schedule outdoor errands or physical activity for the cooler parts of the day, typically before 10.00am or after 4.00pm.

Recognise the Warning Signs

Move to a cool area immediately if you experience dizziness, nausea, a rapid pulse, or a sudden stop in sweating. In cases of confusion or loss of consciousness, call 995 without delay.

For advice on managing heat-related conditions or if you are feeling unwell, visit your nearest Raffles Medical clinic today.

Sources:

¹ The National Environment Agency (NEA) – Thundery Showers On Most Afternoons For The Rest Of April 2026: https://www.nea.gov.sg/media/news/advisories/index/thundery-showers-on-most-afternoons-for-the-rest-of-april-2026

² Meteorological Service Singapore (MSS) – Heat Stress: https://www.weather.gov.sg/heat-stress