More, and heavier, monsoon rains ahead

More, and heavier, monsoon rains ahead

Keep your brolly handy - this coming monsoon season could be even wetter than normal.

The Meteorological Service Singapore (MSS) said on Monday that in-house weather models have predicted that total rainfall this coming December and January could be 10 per cent to 20 per cent above average.

This could mean more thunderstorms and rainy days.

Singapore's north-east monsoon season wet phase typically occurs between mid-November and January. Historical records show average monthly rainfall during those months at between 240mm and 300mm, with rain falling over about half of each month.

The south-west monsoon between June and September generally brings less rain.

Singapore is currently facing a "neutral phase" between the extreme El Nino and La Nina climate phenomena, said MSS senior meteorological officer Chow Kwok Wah.

Rainfall this time "may be comparable" to last year's north-east monsoon when similar conditions prevailed, he added. Then, a total of 572mm of rain fell in November and December, above the historical average of 554mm.

The La Nina phenomenon, a cooling of the tropical Pacific Ocean that occurs every three to four years, can bring heavier rainfall to South-east Asia.


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