Rain cascaded through a family's ceiling during a storm in Thailand.

Footage shows rainwater pouring from gaps in the home's tin roof as a storm lashed Nakhon Si Thammarat province on April 29.

The family tried in vain to contain the water in buckets and basins, but could not prevent the leak from flooding their house.

The storm came after temperatures soared to 45 degrees Celsius last month during a heat wave across the Asia Pacific region.

Maximiliano Herrera, a climatologist and weather historian, described the scorching heat as the 'worst April heatwave in Asian history'.

In the Thai capital Bangkok, residents were warned not to go outside amid 42 degrees Celsius temperatures causing power outages due to surging demand from air con units and fans running.

The country's national weather service said the heat index - what the temperature feels like when combined with humidity - hit a record 54C (129F).

The warm weather is now giving way to extreme tropical storms.

The Thai Meteorological Department warned that southerly and southeasterly winds prevailing over upper Thailand would strengthen between April 23 and 26.

Outbreaks of summer storms, accompanied by thunderstorms, gusty winds, hail, and lightning strikes, were expected to affect the northeastern and eastern parts of the country first, before spreading to other regions.