Severe monsoon rains, floods, and landslides have killed more than 600 people across South and Southeast Asia, with hundreds still missing. Indonesia, Malaysia, Thailand, and Sri Lanka are among the worst affected countries. Indonesia’s Sumatra island alone reported over 300 deaths after days of heavy rainfall, while Thailand’s southern provinces saw at least 160 fatalities in one of the worst floods in decades. Sri Lanka, battered by Cyclone Ditwahar, has declared a state of emergency after more than 130 deaths and 170 missing persons. Malaysia’s northern regions also reported casualties and mass evacuations. Meteorologists attribute the extreme weather to the combined effects of Typhoon Koto near the Philippines and the rare Cyclone Seniyar in the Malacca Strait. Millions have been displaced, infrastructure severely damaged, and rescue operations hampered by ongoing bad weather across the region.