Heavy rainfall has unleashed widespread flooding and landslides across Asia, killing more than 900 people, with hundreds still missing.

Cyclone-fueled downpours battered parts of Indonesia, Thailand, and Malaysia this week when a rare tropical storm formed in the Malacca Strait – a narrow waterway separating the Indonesian island of Sumatra from the other two nations.

Sri Lanka was struck by a separate storm from which heavy rains are now approaching India’s southern coast.

The severe weather has claimed the lives of at least 435 people in Indonesia, 334 in Sri Lanka, 162 in Thailand, and two in Malaysia, officials told the Reuters news agency.

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Indonesian rescue teams are struggling to reach the hardest-hit areas of Sumatra, where Cyclone Senyar caused catastrophic landslides and flooding.

At least 435 people have died, government data on Sunday, November 30, 2025, showed, an increase from 303 on Saturday, November 29, 2025. A further 406 people are reported still missing.

Video footage shows helicopters delivering supplies to the island, renowned for lush rainforests, active volcanoes, and a critically endangered orangutan population.

“During the flood, everything was gone,” a resident of Bireuen, in Sumatra’s northernmost province Aceh, told Reuters.

“I wanted to save my clothes, but my house came down.”

Maulidin, a 41-year-old resident of North Aceh, fled her home with her family when she woke to the sound of flooding.

“My house is already destroyed, all my belongings are ruined, and mud is inside,” she told AFP.

Rescuers have been trying to reach residents stranded by the floodwaters, when monsoon rains caused rivers to overflow in North Sumatra province.

Local media footage shows people using rubber boats to evacuate those trapped.

On the flood-hit Indonesian island of Sumatra, some residents have turned to stealing food and water to survive, according to authorities there.

“The looting happened before logistical aid arrived,” police spokesperson Ferry Walintukan said, according to AP. “(Residents) didn’t know that aid would come and were worried they would starve.”

Across the strait, at least 162 people have died due to the extreme weather in southern Thailand, government spokesperson Siripong Angkasakulkiat told Reuters on Saturday.

Some 3.5 million people have been affected, with authorities airlifting patients and flying critical supplies, including oxygen tanks, to submerged communities, the outlet said.

Amphorn Kaeophengkro and her family of eight had no time to escape when floodwaters swept into their home in Hat Yai city.

Instead, they rushed to the second floor as water levels swelled, eventually spending 48 hours perched atop a table, a washing machine, and a window frame.

“We weren’t thinking about anything else except surviving,” the 44-year-old told Reuters by candlelight, as her family began to clean their dwelling after the water had receded.

“Sometimes we sat at the edge of the window and had to lift our legs to avoid keeping them too deep in the water.”