Warm Days and Thundery Showers in Second Half of June

Sumatra squalls and slightly hazy conditions also expected on few mornings



Singapore, 16 June 2015 – Southwest Monsoon conditions are expected to persist for rest of June 2015, and the low level winds are forecast to blow predominantly from the southeast or southwest.

2As compared to the first half of June 2015, the second fortnight of June 2015 could experience fewer rain days. Short-duration thundery showers due to strong solar heating of land areas are likely on three to five days, mostly in the late morning and early afternoon. In addition, thundery showers with gusty winds due to ‘Sumatra’ squalls can be expected on one or two days in the pre-dawn and morning. On some days, maximum day-time temperatures of 34 degrees Celsius and warm nights can be expected.

3Slightly hazy conditions can be expected on a few days, in particular in the early morning due to the accumulation of particulate matter under light wind conditions.

4Rainfall for June 2015 is likely to be below normal.

Review of 1 – 15 June 2015

5Southwest Monsoon conditions prevailed in the first fortnight of June 2015 with low level winds blowing predominantly from the southeast or southwest. In the first week of June 2015, Singapore experienced a few warm days, in particular over the north-western part of the island, where the maximum daily temperature recorded was around 35 degrees Celsius.

6During the review period, Singapore experienced thundery showers on several days in the late morning and afternoon due to strong solar heating of land areas and convergence of winds. The highest total rainfall of 68.4mm was recorded on 8 June 2015 over Jurong. On 12 June 2015, moderate to heavy thundery showers affected many parts of the island in the afternoon, and the highest total rainfall recorded that day was 65mm over Mandai.

7Between 1 and 15 June 2015, rainfall was above average in the western parts of Singapore, and below average in the central and eastern parts of the island. The highest rainfall of 140mm and 170mm (70% to 110% above average) was recorded around Jurong, and the lowest rainfall of 20mm and 40mm (50% to 75% below average) were recorded around MacRitchie and East Coast areas.

20150616 Fortnightly



Average rainfall for the month — 160.4 mm
Highest rainfall ever recorded — 378.7 mm (1954)
Lowest rainfall ever recorded — 21.8 mm (2009)
Average number of rain days — 13
Average daily maximum temperature — 31.3 degrees Celsius
Average daily minimum temperature — 24.8 degrees Celsius

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