Monthly Archives: September 2016

New climate station temperature record for September

Singapore, 30 September 2016 – Southwest Monsoon conditions are forecast to continue into the first half of October 2016. The low level winds are expected to blow from the southwest or west and gradually become light and variable in direction towards the end of the outlook period.

2.       During the first half of October 2016, short-duration thundery showers are expected on four to six days mostly in the late morning and afternoon. In addition, widespread thundery showers with occasional gusty winds due to squall lines moving eastwards from the Strait of Malacca, are expected on two or three days between the pre-dawn hours and morning. Rainfall for the first fortnight of October 2016 is expected to be slightly below normal.

3.       The warm temperatures experienced in the last week of September 2016 can still be expected on a few days in the first two weeks of October 2016. During this period, the daily maximum temperatures are forecast to range between 33°C and 34°C on most days and could reach a high of around 35°C on a few days.

4        For updates of the daily weather and haze forecast, please visit our MSS website (https://www.weather.gov.sg), NEA website (www.nea.gov.sg), the haze microsite (www.haze.gov.sg) or download the myENV app, MSS’ Weather@SG app.

REVIEW: 1 – 29 September 2016

5          In September 2016, Southwest Monsoon conditions prevailed over the region with the low level winds blowing predominantly from the southwest or west.

6          During the month, Singapore experienced a few warm days, in particular in the last week of the month. At the Changi climate station, the daily maximum temperature recorded on 29 September 2016 was 34.4°C, which exceeds the highest ever recorded daily maximum temperature of 34.3°C (on 15 September 2000) for September.

7          During the review period, lines of thunderstorms or squalls that moved eastwards from the Strait of Malacca brought widespread thundery showers accompanied by gusty winds to Singapore on several days mostly between the early hours and predawn. On a few days, thundery showers due to strong solar heating of land areas affected Singapore mostly in the late morning and early afternoon. Rainfall was heaviest on 14 September 2016 over the Paya Lebar-Macpherson area where a total of 86.6mm of rainfall was recorded.

8          Most parts of Singapore received slightly below normal rainfall in September 2016. The highest rainfall of 216.4mm (23% above average) was recorded around the Telok Blangah area. Rainfall was lowest around Mandai where 86.4mm (57% below average) was recorded.

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

Cooler nights expected on a few days

Singapore, 16 September 2016 – The prevailing Southwest Monsoon conditions are forecast to persist for the rest of September 2016. During the period, the low level winds are expected to blow mainly from the southwest. With the expected presence of low pressure systems such as tropical storms in our nearby region, the winds could turn to blow from the west on some days.

2       In the second half of September 2016, strong solar heating of land areas could give rise to thundery showers over Singapore on five to seven days, mostly in the late morning and early afternoon. In addition, the development of Sumatra squalls to the west of Singapore is expected to bring widespread thundery showers with occasional gusty winds on two or three days in the pre-dawn hours and morning. Higher rainfall is expected in the second fortnight of this month compared to that in the first fortnight, and the total rainfall for September 2016 is expected to be above normal.

3        For the rest of the month, the daily maximum temperatures on most days are expected to range between 32°C and 33°C. On rainy days, the daily minimum temperature, in particular during the night, would be cooler than normal and range between 22°C and 24°C.

4        For updates of the daily weather and haze forecast, please visit our MSS website (https://www.weather.gov.sg), NEA website (www.nea.gov.sg), the haze microsite (www.haze.gov.sg) or download the myENV app, MSS’ Weather@SG app.

REVIEW: 1 – 15 September 2016

5          In the first half of September 2016, Southwest Monsoon with low level winds blowing mostly from the southeast or southwest prevailed over the region.

6          During the period, Singapore experienced a few warm days in the first few days of the month where the highest daily maximum temperature recorded was 34.2°C. The lowest daily maximum temperature recorded was 29.4°C on 12 September 2016 when rain fell over the island from the early morning and eased off in the later part of the afternoon. The lowest daily minimum temperature recorded ranged between 21.9°C and 25.8°C.

7          On a few days during the review period, squall lines that developed over Sumatra or the Strait of Malacca passed over Singapore, bringing widespread thundery showers and gusty winds in the pre-dawn hours and morning. Arising from the squally weather, rainfall was heaviest on 14 September 2016 over the Paya Lebar-Macpherson area where a total of 86.6mm of rainfall was recorded. Overall, most of the thundery showers in the first half of the month fell in the late morning and early afternoon, and were due to strong solar heating of land areas.

8          In the first fortnight of September 2016, rainfall was slightly above normal over the central and western parts of Singapore. The highest rainfall of 128.9mm (54% above average) was recorded around the Paya Lebar area. Rainfall was lowest around Sentosa island where 39.8mm (53% below average) was recorded. 

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