Hong Kong sweltered through one of its hottest, driest Augusts on record last month, as twin typhoons brought scorching temperatures and minimal precipitation to the city. Last month saw the lowest rainfall in August for 23 years, as just 143.3mm of rain fell in the city, less than a third of the monthly average. Usually August is the wettest month of the year, with rainfall measuring 432.2mm on average. The last time rainfall dropped below 140mm in August was in 1992, when only 97.7mm fell across the city. According to the Observatory, this year ranks as the 10th driest August on record. At the same time, the mercury soared in town as the average temperature hit 29.3 degrees Celsius, the seventh-hottest August on record for the city. It came as no surprise after Hong Kong sweated through its hottest day on record on August 8 , when temperatures hit 37.8 degrees. Observatory chief experimental officer Li Kin-wai said it was the hottest August since 2012, when average temperatures jumped to 29.5 degrees. "It's most probably due to the range of high pressure cells dominating [near Hong Kong] and also we had two tropical cyclones providing subsiding air around the coast," Li said. The record-setting weather came just two months after a sweltering June, which was rated as Hong Kong's hottest since the Observatory began keeping records in 1884. In June, the average temperature was 29.1 degrees. Li said overall humidity had been average for Hong Kong, with a monthly average of 78 per cent, just below the usual monthly average of 81 per cent. Out of the top 10 hottest Augusts on record, five have occurred since the year 2000, including four since 2009.