Hong Kong experienced one of its driest and warmest Septembers, Observatory reveals as city is drenched by Typhoon Mujigae rainfall

Hongkongers experienced an extraordinarily warm and dry September due to the rare lack of typhoons.

The month was marked by sunny and warm weather with below normal rainfall, with a monthly mean temperature of 28.4 degrees Celsius, the seventh highest for the month on record, or 0.7 degrees above the normal figure of 27.7 degrees, the Observatory said.

The total rainfall in the month was only 87.9mm, a deficit of about 73 per cent compared to the normal figure of 327.6mm, as no tropical cyclones formed in the region had affected the city or triggered typhoon warnings.

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The accumulated rainfall of 1,608mm since January was also about 28 per cent below the normal figure of 2 233.1mm for the same period.

The findings were revealed as Hong Kong experienced its fourth day of heavy rainfall in the wake of Typhoon Mujigae passing through the region.

Observatory senior scientific officer Chan Sai-tick said last month the low rainfall had been due to the lack of typhoons in Hong Kong, which was possibly a result of El Nino weather system in the Pacific.