Much of Guangdong is part of the low-lying Pearl River delta, which is prone to floods due to watershed floods, sea level rise, and storm surges.
The delta is a major manufacturing base in China and one of the country’s most densely-populated regions, with Guangdong alone home to around 127 million people.
Provincial capital Guangzhou as well as smaller cities Shaoguan and Heyuan were among the worst hit.
Across the province, about 1.16 million households lost power over the weekend, but 80% had their electricity restored by Sunday night.
Flights have been cancelled and delayed at Baiyun International Airport in the capital city Guangzhou due to continuous rain, while schools have been ordered shut in at least three cities.
Dozens of homes across the province have either collapsed or have been severely damaged, with authorities estimating a direct economic loss of nearly 140.6m yuan ($19.8m).
