Thundery showers mostly in the afternoon
Advisory
Singapore, 1 May 2015 – During the next fortnight, Inter-Monsoon conditions are expected to continue with low level winds forecast to be light and variable in direction. Singapore can expect four or five days of short-duration thundery showers in the afternoon. In addition, two or three days of thundery showers can be expected in the morning.
2Based on long-term statistics, May is the second warmest month in the year (after April). Slightly hazy conditions can be expected on a few days, in particular in the early morning, due to accumulation of particulate matter under light wind conditions.
3Rainfall for May 2015 is likely to be near-normal.
Review of 1 – 29 April 2015
4Inter-Monsoon conditions prevailed in April 2015. During the period, the prevailing low level winds were generally light and variable in direction.
5Singapore experienced wet weather conditions on most days of the month with thundery showers occurring mostly in the afternoon. On 28 April 2015, moderate to heavy thundery showers affected many areas of Singapore in the afternoon and evening due to the convergence of winds and strong daytime heating of land areas. The heaviest rainfall that afternoon recorded 88.6mm of rain over the Mandai area.
6Approximately two thirds of Singapore received above normal rainfall for the month of April 2015. The central part of the island around Ang Mo Kio and Lower Peirce Reservoir received the highest rainfall of 267mm to 324mm (55% to 80% above average). The lowest rainfall of 67mm to 91mm (45% to 70% below average) was recorded over the eastern part of the island around Pasir Ris and Simei.
STATISTICS FOR MAY since 1869 (CLIMATE STATION)
Average rainfall for the month — 172.1 mm
Highest rainfall ever recorded — 386.6 mm (1892)
Lowest rainfall ever recorded — 41.6 mm (1997)
Average number of rain days — 15
Average daily maximum temperature — 31.6 degrees Celsius
Average daily minimum temperature — 24.8 degrees Celsius
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