2025 Southeast Asia Monsoon Floods
Recent Developments
01By 2-4 December 2025, regional reporting put the death toll above 1,250 and later above 1,400 as national authorities continued updating casualty counts.
02WMO reporting on 2 December 2025 cited Indonesia’s official emergency dashboard showing more than 860 fatalities, 521 missing, 1.5 million affected, and more than 570,000 displaced in Sumatra.
03Thailand’s disaster authority reported flooding across 12 southern provinces affecting about 2.3 million people and causing at least 178 deaths by 1 December 2025.
04Vietnam’s 2025 storms and floods were estimated to have caused more than US$3.2 billion in losses, with 98 deaths and extensive housing and livestock damage reported.
Interventions
- Search and rescue, evacuation, and cleanup operations by national disaster agencies continued in the hardest-hit areas of Indonesia, Thailand, and Sri Lanka.
- International humanitarian coordination and relief efforts were ongoing through UN-linked response mechanisms and national emergency management authorities.
What Works
- Early warning systems and timely evacuation reduce deaths in flood and cyclone events, especially when alerts reach river-basin and coastal communities before landfall or peak rainfall.
- Pre-positioned shelters, medical supplies, and restored transport routes improve survival and recovery after large-scale flooding by speeding access to food, healthcare, and temporary housing.
How to Help
- Donate to reputable humanitarian organizations supporting flood relief and recovery in the affected countries.
- Support local and international NGOs providing shelter, clean water, medical aid, and emergency logistics.
- Advocate for stronger climate adaptation, disaster preparedness, and resilient infrastructure funding in vulnerable coastal and river basin regions.
Make an Impact
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Verified Organizations
Organizations Helping(25)
Vanni Hope has teams on the ground in Sri Lanka responding to Cyclone Ditwah by mobilizing relief efforts to deliver emergency shelter materials and dry-food packs to displaced families affected by flooding and landslides. Donations directly fund safe temporary shelter, dry food for children and the elderly, and basic essentials to restore safety and dignity in the immediate aftermath.
In response to the floods in Indonesia, Yayasan CARE Peduli is distributing pre-positioned emergency hygiene kits to reduce health risks, particularly for women and children, and preparing to provide food and family kits along with temporary latrines in Aceh and West Sumatra to support families who have lost homes and access to clean water.
Raks Thai is providing relief in six provinces of southern Thailand hit by monsoon floods, reaching over 15,000 people with food, drinking water, and essential supplies. They collaborate with local women’s groups and youth volunteers in severely affected areas like Pattani, Yala, and Narathiwat to ensure aid reaches those with limited access to basic needs.
Chrysalis is partnering with the Government of Sri Lanka and district offices to support 18,000 people affected by Cyclone Ditwah, prioritizing vulnerable individuals with distributions of food, safe drinking water, hygiene kits, and other essential items to address immediate needs from flooding.
