Extreme heat in Jakarta: plans, cycles and who is at work

A sinking, sprawling capital in the country where half of Southeast Asia’s air conditioners could be. Heat plan: parts in place, no full plan found.

Heat type: Humid heat, all year round. Dry heat and humid heat, explained.

Heat action plan: Parts in place, no full plan found

No standalone heat action plan found. Jakarta’s Climate Action Plan 2021–2050 aims to reduce its vulnerability to extreme heat, and in October 2025 the governor told health facilities to prepare for heat illness.

Sources: C40 Cities, 2025 · Antara, 2025

Heat today

Live readings and the week’s forecast are on the interactive map. Official warnings: BMKG. How much climate change shaped today’s heat: Climate Shift Index map, Climate Central.

Vicious cycles the evidence ties to Jakarta

The global cooling loop

Half of Southeast Asia’s projected 300 million air conditioners in 2040 could be in Indonesia. Source: International Energy Agency, 2019

Cooling powered by fossil fuels adds to the warming that makes us need more cooling. Follow it on the map.

The wildfire loop

Indonesia’s 2015 forest and peat fires cost an estimated US$16.1 billion. Source: World Bank, 2016

Heat dries forests into fuel. Fires release carbon and strip away the trees that cool the land. Follow it on the map.

The dying-green loop

Among the hot, fast-growing cities where urban trees are at risk. Source: Esperon-Rodriguez et al., Nature Climate Change, 2022

Heat and drought kill city trees. Without their shade the streets get hotter, and hotter streets kill more trees. Follow it on the map.

Recently updated here

• Support for the Southeast Asia Heat Health Hub’s next stage (added in the October 2026 update)

Every change is checked before it appears. What changed this month · Corrections

Who heat hits hardest here

• People in informal settlements
• Workers in heat-exposed jobs

Already at work here

• Otoritas Jasa Keuangan (Financial Services Authority), Indonesia: Its climate risk guideline for banks (2024, refined in 2026) includes data on Indonesia’s physical climate hazards. A 2022 rule lets banks restructure loans for borrowers in areas it designates as disaster-hit: after the 2025 Sumatra floods, Rp12.58 trillion for 237,083 borrowers. Heat has not yet been designated.
• KOMIDA, with Build Change (Indonesia): One of Indonesia’s largest microfinance institutions, piloting small home-improvement loans for climate adaptation with Build Change, aimed at women earning under US$5 a day and paired with digital advice.
• Nusantara Fund (Dana Nusantara): Funds Indigenous peoples and local communities in Indonesia directly, such as protecting water sources in Central Sulawesi. Heat-specific funding is not confirmed.

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The national picture

Plans and law, warnings, rules for heat at work, cooling, money and other cities in Indonesia: the Indonesia country snapshot.