In Sri Lanka, 334 people have been confirmed dead after the passage of tropical cyclone Ditwah.
This is a sharp increase in the number, which is feared to rise even more as nearly 400 are still missing. According to the AFP news agency, the authorities say that they have only seen a fraction of the damage in the most vulnerable areas.
The Sri Lankan newspaper Daily Mirror writes that 24,000 police and military personnel are searching for people who have sought temporary shelter from the floods.
It is the worst natural disaster to hit the island nation in two decades, and President Anura Kumara Dissanayake has asked for international help.
India, Pakistan and Japan have sent emergency aid, not least medicine, but large bodies of water remain, making rescue efforts difficult. In addition, there are fears of many new accidents where mudslides flow down mountains in the island's mountainous interior, reports Al Jazeera .
In Indonesia, the disaster agency says the death toll has risen to at least 442 people. Heavy rains there have also caused major flooding and landslides, forcing tens of thousands of people to evacuate. At least 402 people are still missing.
The country's western island of Sumatra has been particularly affected, where washed away roads have isolated communities and made it difficult to deliver emergency aid.
Thailand's southern provinces were hit this week by the worst floods in over a decade, with 162 people reported dead.
