Indonesia could face over 230 hot days annually if warming continues

JAKARTA, Indonesia (MNTV) – Indonesia could experience as many as 234 hot days per year if global warming remains unchecked, according to a new report by Climate Central and World Weather Attribution (WWA).

The study, titled Ten Years of the Paris Agreement: The Present and Future of Extreme Heat, warns that even if all countries meet their current climate pledges, global temperatures are still projected to rise by 2.6°C by the end of the century. Under that scenario, Indonesia could endure around 134 days of extreme heat annually.

If emissions continue to climb and the planet warms by 4°C, the number of hot days in Indonesia could more than double to 234 — or over half the calendar year.

Data show that Indonesia’s average number of hot days has already jumped from 45 days (2005–2014) to 77 days (2015–2024) — an increase of 32 days within a decade. That places the country third worldwide and highest in Asia for the fastest rise in hot days since the 2015 Paris Agreement.

“There will be pain and suffering because of climate change,” said Kristina Dahl, Vice President of Science at Climate Central. “Heat kills people.”

Report co-author Friederike Otto of Imperial College London added that the number of heat-related deaths could reach “tens of thousands or millions,” noting that thousands already die each year from extreme temperatures.

The findings warn that most countries remain unprepared even for today’s 1.3°C warming, with rising heat threatening public health, food security, water access, and labour productivity.

Researchers urge urgent energy transition measures, expanded green spaces, and early warning systems for heat waves. They identify tropical nations — particularly Indonesia, Brazil, and India — as the most exposed to the worsening impacts of global temperature rise.