Severe Weather in Indonesia
Straddling the equator across thousands of islands, Indonesia is shaped by monsoon rains, catastrophic floods, frequent small tornadoes, and intense lightning — but, like its neighbour Singapore, almost never by typhoons. Here is the whole picture.
An equatorial giant
Indonesia sits astride the equator, which gives it a hot, humid climate with heavy rainfall and near-daily thunderstorms — and largely shields it from tropical cyclones. Its severe weather comes instead from monsoon flooding, landslides on volcanic slopes, and the swirling puting beliung whirlwinds that strike during the transition seasons.
The hazards, explained
Flooding
Indonesia's greatest weather killer. Monsoon downpours regularly inundate cities — above all Jakarta, one of the most flood-prone and fastest-sinking megacities on Earth.
Tornadoes (puting beliung)
Indonesia records a surprising number of small tornadoes and waterspouts each year, known as puting beliung, especially in the season-change months.
Typhoons & cyclones
Direct hits are extremely rare because of the equator — but the deadly Cyclone Seroja in 2021 showed the southern islands are not entirely immune.
The monsoons
A wet western monsoon and a drier eastern monsoon govern the year and set the rhythm of the floods.
Deep dives
- Cyclone Seroja (2021) — the rare tropical cyclone that struck Indonesia directly.
- Jakarta flooding — a sinking megacity's defining hazard.