Thundery showers also on some afternoons over the rest of Sept
Expect thundery showers on most days in the second half of September.
The Meteorological Service Singapore (MSS) weather advisory released on 16 Sept highlighted this prediction.
Source: Danish Prakash on Unsplash
Thundery showers on several mornings in Sept
Over the next fortnight, widespread thundery showers will bring gusty winds.
According to MSS, several days will see pre-dawn and morning showers.
Temperature differences between land and sea create Sumatra Squalls, which may trigger these thundery showers.
Thundery showers also on some afternoons in Sept
Some afternoons through the rest of the month will also bring thundery showers.
MSS added that the showers will be brief and confined to parts of the island:
There may be few dry days.
The next two weeks will still bring near-average total rainfall to most of the island.
Source: Dewang Gupta on Unsplash
Southwest Monsoon conditions prevailing
The prevailing Southwest Monsoon drives these weather conditions.
It set in over the surrounding region in early June and will persist over the next two weeks.
This means that winds will blow mainly from the southeast or southwest.
The Southwest Monsoon is generally drier than at other times of the year and typically lasts until September, MSS previously said.
Above 34°C temperatures for a few days
As for the temperature, daily temperatures on most days should range from 24°C to 33°C.
On a few days, the daily maximum temperature may go “slightly above” 34°C.
MSS added that this holds even though it expects thundery showers on most days.
Well above-average rainfall in 1st half of Sept
In the first half of September, Singapore registered “well above-average rainfall”, with localised short-duration thundery showers over parts of the island on some days.
On several days, thundery showers took place in the pre-dawn and morning, due to Sumatra squalls.
The Seletar area was the wettest, recording about 248% above-average rainfall, while Paya Lebar had 73% above-average rainfall despite being the driest area.
Source: Meteorological Service Singapore
In the morning of 5 Sept, widespread thundery showers and gusty winds occurred due to the passage of a Sumatra squall.
On that day, the Sarimbun Reservoir station recorded a daily total of 102.6 mm—the highest for the two-week period.
4 days of below-30°C temperatures
Due to the rainy weather and cloudy skies, Singapore experienced “relatively cool conditions” on several days in the first half of September.
Thus, the daily maximum temperature dropped below 30°C on four days, MSS said.
The hottest daily temperature for the period was just 33.8°C, recorded in Admiralty on 3 Sept.
Also read: Wet weather on most days in 1st half of Sept, with showers on several mornings
Wet weather on most days in 1st half of Sept, with showers on several mornings
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Featured image adapted from Danish Prakash on Unsplash.
