Floods and cyclonic storms carnage across Srilanka, Thailand, and Indonesia: deaths top 900 and hundreds missing; displaces more than four million people.
JAKARTA/BANGKOK — Dec. 1, 2025. The death toll from floods and landslides unleashed by torrential rains across three Southeast Asian countries climbed to more than 900, officials said, as relief operations struggled to reach stranded communities and tens of thousands of evacuees. A rare tropical storm that formed in the Malacca Strait fueled heavy rains and damaging winds for a week, with 445 deaths in Indonesia, 170 in Thailand and three in Malaysia. More than 4 million people have been affected—nearly 3 million in southern Thailand and **1.1 million in western Indonesia—**in a disaster authorities warned is still unfolding.
RELEVANT SUSTAINABLE GOALS
Separately, across the Bay of Bengal, Sri Lanka reported 153 deaths from a cyclone, with 191 missing and over half a million affected nationwide; by Sunday, Sri Lankan authorities said the toll had risen sharply to 334, with low-lying areas of Colombo inundated. Officials in Indonesia, Thailand and Sri Lanka raced to clear debris and locate hundreds still unaccounted for as waters receded in some districts.
Indonesia: Landslides, shattered Main National roads and isolated towns
In West Sumatra, the death toll in Indonesia surged to 435, up from 303 a day earlier, as casualty and damage reports arrived from three devastated provinces. Landslides and floodwaters severed road links and damaged telecommunications, complicating rescue efforts. Helicopters ferried food and aid into isolated towns like Palembayan, where a Reuters crew saw homes and cropland scoured away.
“I came back on Friday, and the house was gone,” said Afrianti, 41, in Padang, describing how her family of nine is now sheltering beside a single wall left standing. Official figures list 406 missing and 213,000 displaced, with reports of looting of supply lines as desperation mounts.
Thailand: Historic rain, widespread casualties in the south
Thailand’s Ministry of Public Health reported 170 deaths and 102 injuries, the majority in Songkhla Province (131 fatalities). Hat Yai, southern Thailand’s largest city, logged 335 millimeters (13 inches) of rain on Friday—its highest single-day total in 300 years—after days of unrelenting downpours. Nearly 3 million people have been affected across the region, according to official statistics.
Malaysia: Evacuations persist as skies clear
In neighboring Malaysia, around 18,700 people remained in evacuation centers even as meteorological authorities lifted tropical storm and continuous rain warnings on Saturday and forecast clearer weather for most of the country. Malaysia’s foreign ministry said more than 6,200 nationals stranded in Thailand had been evacuated and urged citizens in Indonesia’s West Sumatra to register with the local consulate for assistance. One Malaysian was reported missingfollowing a landslide.
A rare tropical storm and a broader climate alarm
Officials across the region linked the week-long deluge to a rare tropical storm that formed in the Malacca Strait, an unusual birthplace for cyclonic systems that intensified the monsoon and drove extreme rainfall, floods and landslides. The unfolding crisis has left thousands without shelter or critical supplies and exposed the limits of emergency systems stretched by multiple, simultaneous disasters.
In Sri Lanka, authorities described the worst natural disaster in two decades—since the 2004 tsunami—as Cyclone Ditwah submerged neighborhoods and drove the national death toll into the hundreds, with many still missing.
Accountability debate intensifies : What’s next ?
As rescue teams continue door-to-door searches and airlifts, advocates renewed calls for accountability over climate risks. “The climate crisis is here and now. The fossil fuel industry knew, lied, denied, and sabotaged action on catastrophic climate change for decades,” one statement said, reflecting a growing push from civil society to link escalating storm losses to long-running policy and corporate decisions.
With floodwaters receding in places but landslides and road collapses still hampering access, officials prioritized:
- Rapid humanitarian aid to isolated areas via air and temporary river crossings;
- Restoration of communications, power and water;
- Search and accounting for the missing in Indonesia and Thailand, and for Sri Lanka’s rising toll.
This remains a developing story as of Dec. 1, with governments warning that damage assessments and death counts may rise as more areas become reachable and the full scale of the week’s storms is tallied.
Lead image courtesy of AFP via Getty (An aerial view shows houses partially submerged in floodwaters after heavy rainfall in Kaduwela on the outskirts of Colombo on November 29, 2025)
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