Lao PDR: Floods - Jul 2026

Since late June 2026, Lao PDR had experienced recurrent flooding, flash floods, waterlogging and landslides associated with the southwest monsoon, Tropical Storm Maysak and subsequent weather systems. While flooding was first reported in late June, the situation progressively worsened through July and August as prolonged and repeated heavy rainfall caused cumulative impacts, with already affected areas experiencing further flooding, waterlogging and landslides, increasing damage and disrupting access.

[...] According to the LRC consolidated assessment dated 17 August 2026, flooding during July and August 2026 affected communities across six provinces: Khammouane, Savannakhet, Bolikhamxay, Luang Namtha, Xiengkhouang and Champasak. The assessment covered 25 districts and 395 villages, affecting 22,390 households (114,037 people), including 54,699 women, 13 persons with disabilities and one death. ([IFRC, 25 Aug 2026](https://reliefweb.int/node/4227079))

According to the latest Government data, 403,133 people from 81,484 families had been affected across 16 provinces. At least 7,528 people had been evacuated, with eight deaths, three injuries and one person reported missing. The situation continued to shift geographically, with northern provinces among the hardest hit. In Luang Namtha, severe flash flooding on 29 August affected 2,463 households; floodwaters reached the Boten Special Economic Zone, and six temporary shelters were established after the province was declared a disaster zone. Oudomxay experienced its third and most severe flood wave on 29-30 August, which affected 81 villages across Namor, Xay and La districts, while Luang Prabang recorded flash flooding. Khammouane continues to face significant cumulative impacts, with approximately 151,000 people affected across all 10 districts since July. ([UNFPA, 21 Sep 2026](https://reliefweb.int/node/4230629/))