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Ministry of Sustainability and the Environment
Parliament Q&A

Oral Reply to Parliamentary Question on Heatwaves

6 May 2026

Oral Reply to Parliamentary Question on Heatwaves by Dr Janil Puthucheary, Senior Minister of State for Sustainability and the Environment.

Question:

Melvin Yong Yik Chye: To ask the Minister for Sustainability and the Environment in light of heatwave conditions in neighbouring countries such as Malaysia and Thailand (a) what is the Ministry’s assessment of the risk of similar heatwave events affecting Singapore; and (b) whether there are plans to enhance advance warning systems for weather-dependent sectors.

Answer:

In Singapore, a heatwave is declared when the daily maximum temperature averaged across all weather stations is at least 35oC for three consecutive days, and the average daily mean temperature throughout the period is at least 29oC. Based on the weather outlook, the chance of a heatwave occurring in Singapore during the remainder of the 2026 hot season, which ends in May, is low.

The Meteorological Service Singapore (MSS) issues fortnightly outlooks and four-day forecasts of weather conditions, including high temperatures. MSS also closely monitors climate phenomena such as El Niño and works with the Mercury Taskforce to issue advisories, including to weather dependent sectors, if it expects extended periods of high temperatures.

The Government has heat stress management initiatives on an ongoing basis regardless of whether a heatwave is forecasted. This includes the Heat Stress Advisory which provides simple tips for the general public to plan prolonged outdoor activities based on prevailing heat stress levels, complemented by sector-specific measures such as the Ministry of Manpower’s heat stress framework for outdoor work.

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