The record rainfall comes as northern China has been deluged with heavy rains as the remnants of Typhoon Doksuri moved north after earlier hitting southern Chinese provinces.

Beijing and the surrounding province of Hebei have been hit by severe flooding, with waters rising to dangerous levels. The rains destroyed roads and knocked out power and even pipes carrying drinking water.

Among the hardest hit areas is Zhuozhou, a small city in Hebei province that borders Beijing's southwest. On Tuesday night, police there issued a plea on Weibo for lights to assist with rescue work.

On Wednesday, waters in Gu'an county in Hebei, which borders Zhuozhou, reached as high as halfway up a pole where a surveillance camera was installed. Chinese authorities said Tuesday the torrential rains around Beijing had caused at least 20 deaths and 27 people are missing.

The previous record for rainfall was in 1891, the Beijing Meteorological Bureau said on its official Weibo account Wednesday, when the city saw 609 millimetres (24 inches) of rain. The earliest precise recordings made by machines are from 1883.