A typhoon that ripped roofs from homes has killed dozens of people across Vietnam and the Philippines, officials from both countries said, as a weakened Storm Bualoi crossed into neighbouring Laos.

The typhoon battered small islands in central Philippines last week, toppling trees and power pylons, unleashing floods, and forcing 400,000 people to evacuate. A Philippine civil defence official on Monday said the death toll there had more than doubled to 27, with most victims either drowning or being struck by debris.

Scientists warn that storms are becoming increasingly powerful as the planet warms due to human-induced climate change.

In Vietnam, Bualoi made landfall as a typhoon late on Sunday, generating winds of up to 130 kilometres per hour (80 miles per hour). At least 13 people were killed, while a search is ongoing for 20 others, disaster authorities stated in an online update.

More than 44,200 houses were damaged, including many with roofs torn off, predominantly in the central province of Ha Tinh. At least 800 homes were flooded and nearly 6,000 hectares (15,000 acres) of crops were inundated, according to the update.

At least nine people died when a typhoon-related whirlwind swept through the northern Vietnamese province of Ninh Binh early on Monday, according to the local disaster agency. One person was killed in the province of Hue and another in Thanh Hoa, with about 20 people reported missing by local and national disaster authorities.

More than 53,000 people were evacuated to schools and medical centres converted into temporary shelters before Bualoi made landfall in Vietnam, the Ministry of Agriculture and Environment said.

Four domestic airports, as well as parts of the national highway, were closed on Monday. More than 180 flights were cancelled or delayed, according to airport authorities. Parts of Nghe An and the steel-producing central province of Ha Tinh were without power, and schools were closed in affected regions.

Since making landfall in Vietnam, Bualoi has weakened as it moved across the border into Laos. It came in the wake of Super Typhoon Ragasa, which killed 14 people across northern Philippines. The country is struck by an average of 20 storms and typhoons each year, routinely affecting disaster-prone areas where millions of people live.

In Vietnam, 175 people were killed or went missing due to natural disasters from January to August this year, according to the General Statistics Office. Total damages were estimated at $371m, almost triple the amount during the same period in 2024, it said.

Typhoon Yagi killed hundreds of people in Vietnam in September last year and caused economic losses worth $3.3bn.