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View all search resultsIndonesia braces for wetter rainy season as La Nina looms
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People carrying their belongings wade through a flooded street following overnight heavy rains in Legian, Badung, Bali on Sept. 10, 2025. (Reuters/Dicky Bisinglasi)
A
s the cooling La Nina weather phenomenon is predicted to return between September and November, the weather agency and experts warn of extreme rainfall exacerbated by climate change, raising the risk of more floods and landslides as the wet season approaches.
The Meteorology, Climatology and Geophysics Agency (BMKG) is monitoring the climate patterns in the Pacific Ocean to track the potential occurrence of La Nina in Indonesia, as many parts of the country will enter the rainy season in September and November.
As La Nina typically brings stronger winds and heavier rainfall, the BMKG warned that several regions faced greater risk of flooding and landslides when the rainy season peaks between November and February.
Deputy head for climatology Ardhasena Sopaheluwakan said that between September and November, La Nina impact would likely hit Central Kalimantan, East Kalimantan, Central Java, East Java, and Bali. Meanwhile, those across Sulawesi Island, Maluku and Papua may see it until February.
“Should the La Nina occur, typically the eastern parts of Indonesia would be affected,” he told The Jakarta Post on Sunday.
Intense downpour
BMKG head Dwikorita Karnawati told a press conference on Friday that while most of the regions would see rainfall intensity at normal levels until April next year, she warned of extreme rainfall in West Java, Central Java and some parts of Sulawesi, Maluku and Papua islands.
