Monthly Archives: August 2016

Significantly below normal rainfall expected for August 2016

Advisory

Singapore, 16 August 2016 –The prevailing Southwest Monsoon conditions will continue into the second half of August 2016 and the low level winds are forecast to blow mainly from the southeast or southwest.

2          For the rest of August 2016, short-duration thundery showers due to strong solar heating of land areas are likely on three or five days, mostly in the late morning and early afternoon. In addition, thundery showers with gusty winds due to Sumatra squalls are expected in the morning on one or two days. Rainfall for August 2016 is expected to be significantly below normal.

3          The current dry weather conditions experienced in recent days are expected to prevail in the second half of August 2016. In addition, a few warm days can be expected with the daily maximum temperatures forecast to range between 32°C and 33°C on most days and could reach around 34°C on a few days.

REVIEW (1 – 15 August 2016)

4          Southwest Monsoon conditions prevailed over the region in the first fortnight of August 2016, and the low level winds blew from the southeast or southwest.

5          Singapore experienced a few warm days during the review period. The highest daily maximum temperature was 35.4⁰C recorded in the northern part of Singapore on 10 August 2016. At the Changi climate station, the total rainfall recorded for the first half of August 2016 was 41.2mm, approximately 72% below the long-term mean of 148.9mm for August. In addition, the mean monthly temperature recorded during this period was 28.9°C, approximately 1°C warmer than the long-term August mean temperature.

6          During the first two weeks of the month, Singapore experienced dry weather conditions on most days. Thundery showers affected a few areas on some days mainly in the late morning and early afternoon. The heaviest rain fell over the Choa Chu Kang area on 11 August 2016 where a total of 65.6mm of rainfall was recorded. On 3 August 2016, a Sumatra squall that moved across Singapore in the predawn hours brought strong wind gusts of up to 86.1km/h around the West Coast areas.

7          Rainfall across Singapore was below normal in the first half of August 2016. The highest rainfall of 56mm (39% below average) was recorded around Serangoon. Rainfall was lowest around Jurong West where 4mm (95% below average) was recorded.

CLIMATE STATION STATISTICS FOR AUGUST (Climatological reference period: 1981 – 2010)

Thundery showers are still expected on some days

Advisory

Singapore, 1 August 2016 –  Southwest Monsoon conditions are forecast to persist in August 2016 with the low level winds blowing mostly from the southeast or southwest.

2          In the first fortnight of August 2016, short-duration thundery showers due to strong solar heating of land areas are forecast to occur in the late morning and early afternoon on four to five days. In addition, thundery showers with gusty winds due to Sumatra squalls are likely on one to two days in the pre-dawn and morning. Rainfall for the first fortnight of August 2016 is expected to be slightly below normal.

3          Compared to the weather conditions in the second half July 2016, the first fortnight of August 2016 is expected to be generally drier and warmer. The daily maximum temperatures for the next fortnight is forecast to range between 33°C and 34°C, and could reach around 35°C on a few days.

REVIEW (1 – 31 July 2016)

4          Southwest Monsoon conditions prevailed over the region in July 2016, with the low level winds blowing predominantly from the southeast or southwest.

5          Singapore experienced several warm days in the first half of July 2016, when the daily maximum temperatures ranged between 30.2°C and 36°C. With wetter weather in the second half of the month, it was a relatively cooler fortnight with the daily maximum temperatures ranging between 28.8°C and 34.7°C. At the Changi climate station, the mean monthly temperature recorded for July 2016 was 28.4°C, warmer than the long-term mean of 27.9°C for July.

6          Singapore experienced relatively wet conditions in July 2016 as a result of strong convergence of winds in the surrounding region as well as the passage of Sumatra squalls on several days. The heaviest rain fell on 21 July 2016 and brought a daily rainfall of 96.8mm to the East Coast area.

7          Almost all parts of Singapore received above normal rainfall in July 2016. The highest rainfall of 426mm (120% above average) was recorded over the western part of the island around Tengah. Rainfall was lowest around Buangkok where 146.6mm (16% below average) was recorded.

CLIMATE STATION STATISTICS FOR AUGUST (Climatological reference period: 1981 – 2010)