Monthly Archives: June 2023

June 30, 2023

Wet Weather Expected to Continue in the First Half of July 2023

Singapore, 30 June 2023 – The prevailing Southwest Monsoon conditions are expected to persist over Singapore and the surrounding region in the first half of July 2023, with low-level winds blowing from the southeast or southwest.

2     In the first fortnight of July 2023, wet weather conditions are forecast over Singapore and the surrounding region. Short-duration thundery showers are expected between the late morning and afternoon over parts of the island on most days. On a few days, the passage of Sumatra squalls may bring widespread thundery showers and gusty winds between the pre-dawn and morning. The total rainfall for the first half of July 2023 is likely to be above average over most parts of the island.

3     While showers are expected in the coming fortnight, there could still be a few warm days with daily highs of slightly above 34 degrees Celsius. On most other days, the daily maximum temperature is likely to range between 32 degrees Celsius and 34 degrees Celsius. Several nights may be warm and humid, when the prevailing winds blow from the southeast or south bringing warm and moist air from the sea to Singapore. On these nights, the temperatures may stay above 28 degrees Celsius, particularly over the eastern and southern coastal areas of the island.

4      For updates of the daily weather forecast, please visit the MSS website (https://www.weather.gov.sg), NEA website (www.nea.gov.sg), or download the myENV app.

 

REVIEW (1 – 29 June 2023)

5    Southwest Monsoon conditions prevailed over Singapore and the surrounding region from early June 2023 with the prevailing winds blowing mostly from the southeast or southwest.

6    In June 2023, localised short-duration thundery showers fell over parts of the island on some afternoons. There were several days when Sumatra squalls brought widespread thundery showers and gusty winds over Singapore in the pre-dawn and morning. On 4 June 2023, widespread thundery showers from a Sumatra squall fell over many parts of Singapore in the late morning and early afternoon. The daily total rainfall of 96.2mm recorded at Toa Payoh that day was the highest daily rainfall for June 2023.

7    June 2023 was less warm compared to May 2023. The daily maximum temperature ranged between 32 and 34 degrees Celsius on most days. The highest daily maximum temperature of 34.7 degrees Celsius was recorded at Pulau Ubin and Ang Mo Kio on 2 June 2023 and 20 June 2023 respectively. There were also several warm nights where the minimum night-time temperatures remained above 28 degrees Celsius.

8     Most parts of Singapore recorded above average rainfall in June 2023. MacRitchie Reservoir recorded rainfall of 84 per cent above average, and Mandai recorded rainfall of 34 per cent below average.

 

 

 

 

 

CLIMATE STATION STATISTICS

Long-term Statistics for July
(Climatological reference period: 1991 – 2020)

Average daily maximum temperature: 31.4 °C
Average daily minimum temperature: 25.4 °C
Average monthly temperature: 28.2 °C
Average rainfall: 146.6 mm
Average number of rain days: 14

 

Historical Extremes for July
(Rainfall since 1869 and temperature since 1929)

Highest monthly mean daily maximum temperature: 32.4 °C (1997)
Lowest monthly mean daily minimum temperature: 22.9 °C (1975)
Highest monthly rainfall ever recorded: 527.3 mm (1890)
Lowest monthly rainfall ever recorded: 12.2 mm (2019)

 

June 16, 2023

More Warm Days and Less Wet Weather Expected for Rest of June 2023

Singapore, 16 June 2023 – More warm days are expected for the rest of June 2023 compared to the first half of the month. In the coming fortnight, daily maximum temperatures of about 34 degrees Celsius are expected on most days and could reach a high of around 35 degrees Celsius on a few days. Warm and humid conditions are also expected on some nights, with temperatures hovering around 29 degrees Celsius. With the prevailing Southwest Monsoon expected to persist in the second half of June 2023, the low-level winds over Singapore will mostly blow from the southeast or southwest.

2    The second half of June 2023 is expected to be drier than the first half of the month. The presence of a dry air mass may bring relatively fair and warm weather to Singapore on a few days in the coming fortnight. Localised short-duration thundery showers may still occur in the afternoon over parts of the island on some days when there is convergence of prevailing winds with the sea breeze. Widespread thundery showers with gusty winds, due to Sumatra squalls, are forecast between the pre-dawn hours and morning on one or two days. On the whole, we expect below average rainfall in the second half of June 2023. For the month of June, the total rainfall is expected to be near average over most parts of the island.

3    More warm days are expected in the coming fortnight compared to the first half of the month. During the second half of June 2023, the daily maximum temperature is forecast to be around 34 degrees Celsius on most days. On a few days when there is less cloud cover, the daily maximum temperature could reach a high of around 35 degrees Celsius. Warm and humid conditions can also be expected on some nights when prevailing winds from the southeast or south blow warm and humid air from the sea to Singapore. On these nights, minimum night-time temperatures of up to 29 degrees Celsius can be expected, particularly over the south-eastern parts of the island.

4     For updates of the daily weather forecast, please visit the MSS website (https://www.weather.gov.sg), NEA website (www.nea.gov.sg), or download the myENV app.

 

REVIEW (1 – 15 June 2023)

5     In the first half of June 2023, the light and variable winds over Singapore and the surrounding region strengthened to blow from the southeast or southwest, as the Southwest Monsoon season set in over the region.

6    On several days during the first fortnight of June 2023, the presence of low-pressure systems over the surrounding sea areas led to the development of Sumatra squalls. This passage of Sumatra squalls brought thundery showers to Singapore between the pre-dawn hours and morning. On 4 June 2023, widespread thundery showers from a Sumatra squall fell over many parts of Singapore in the late morning and early afternoon. The daily total rainfall of 96.2mm recorded at Toa Payoh that day was the highest daily rainfall for the first half of June 2023.

7    The first half of June 2023 was not as warm compared to May 2023 where maximum temperatures of above 35 degrees Celsius were recorded on some days. In the first two weeks of June 2023, there were three days where the daily maximum temperature was above 34 degrees Celsius. The highest daily maximum temperature of 34.7 degrees Celsius was recorded at Pulau Ubin on 2 June 2023. There were also a few warm nights, particularly over the southern and eastern parts of the island where the minimum night-time temperatures ranged between 28 degrees Celsius and 29 degrees Celsius. The warm nights were due to prevailing winds blowing from the southeast bringing warm, humid air from the sea over the land.

8    In the first fortnight of June 2023, rainfall was above average over most parts of Singapore. Seng Kang recorded rainfall of 114 per cent above average, and Mandai recorded rainfall of 58 per cent below average.

 

 

 

CLIMATE STATION STATISTICS

Long-term Statistics for June
(Climatological reference period: 1991 – 2020)

 

Average daily maximum temperature: 31.9 °C
Average daily minimum temperature: 25.7 °C
Average monthly temperature: 28.5 °C
Average rainfall: 135.3 mm
Average number of rain days: 13

 

Historical Extremes for June
(Rainfall since 1869 and temperature since 1929)

Highest monthly mean daily maximum temperature: 33.2 °C (1997)
Lowest monthly mean daily minimum temperature: 23.2 °C (1965)
Highest monthly rainfall ever recorded: 378.7 mm (1954)
Lowest monthly rainfall ever recorded: 21.8 mm (2009)

 

June 1, 2023

More Warm Nights Expected with Onset of Southwest Monsoon Conditions

Singapore, 1 June 2023 – Low-level winds over Singapore and the surrounding region are forecast to strengthen and blow from the southeast or southwest in early June 2023, as the Southwest Monsoon progressively sets in over the region. The Southwest Monsoon season typically extends into September and is generally a drier season compared to other times of the year.

2     In the first fortnight of June 2023, localised short-duration thundery showers can be expected over parts of the island on some afternoons. In addition, Sumatra squalls may bring widespread thundery showers and gusty winds between the pre-dawn and morning on a few days. The total rainfall for the first half of June 2023 is likely to be near average over most parts of the island.

3     The daily maximum temperature in the next fortnight is forecast to range between 33 degrees Celsius and 34 degrees Celsius on most days. On one or two days when there is less cloud cover, the daily maximum temperature could reach a high of around 35 degrees Celsius. The nights are also expected to be warm and humid. Warm nights typically occur when the prevailing winds blow from the southeast or south and bring warm, humid air from the sea. On these nights, the temperatures may stay above 29 degrees Celsius, particularly over the southern and eastern coastal areas of the island.

4      For updates of the daily weather forecast, please visit the MSS website (https://www.weather.gov.sg), NEA website (www.nea.gov.sg), or download the myENV app.

 

REVIEW (1 – 31 May 2023)

5      Inter-monsoon conditions prevailed in May 2023 with the prevailing winds generally light and variable in direction.

6      Localised short-duration thundery showers fell over parts of Singapore in the afternoon on several days in May 2023. There were a few days when Sumatra squalls brought widespread thundery showers and gusty winds over the island in the morning. On 4 May 2023, strong solar heating of land areas coupled with localised convergence of winds led to the development of thundery showers over most parts of Singapore in the afternoon. The daily total rainfall of 113.2 mm which fell at Paya Lebar that day was the highest rainfall recorded for May 2023.

7      May 2023 was warm, with maximum temperatures above 34 degrees Celsius on most days. There were nine days in May registering temperatures of 35 degrees Celsius or more. Most of these days occurred in the first half of the month. It was especially warm in the second week of May 2023 when light winds and clear sky conditions resulted in high temperatures across many parts of Singapore. Warm night-time temperatures were also experienced during the second half of the month when the temperatures stayed above 29.0 degrees Celsius on some days.

8      On 13 May 2023, several locations recorded temperatures exceeding 36 degrees Celsius, with the highest temperature of 37.0 degrees Celsius measured at Ang Mo Kio. This temperature reading ties with the record for highest daily maximum temperature in Singapore (last recorded at Tengah on 17 April 1983) since temperature records started in 1929. On 25 May 2023, the daily minimum temperature recorded at the East Coast Parkway station reached a high of 29.7 degrees Celsius, the highest recorded for the month of May. The previous record was 29.5 degrees Celsius registered at the same station on 18 May 2022. At the Changi climate station, the mean temperature for May 2023 was 29.5 degrees Celsius, surpassing the previous record high of 29.4 degrees Celsius set in May 1998.

9      Most parts of Singapore recorded below average rainfall in May 2023. Paya Lebar recorded rainfall of nine per cent above average, and Punggol recorded rainfall of 64 per cent below average.

 

 

 

 

 

CLIMATE STATION STATISTICS

Long-term Statistics for June
(Climatological reference period: 1991 – 2020)

Average daily maximum temperature: 31.9 °C
Average daily minimum temperature: 25.7 °C
Average monthly temperature: 28.5 °C
Average rainfall: 135.3 mm
Average number of rain days: 13

 

Historical Extremes for June
(Rainfall since 1869 and temperature since 1929)

Highest monthly mean daily maximum temperature: 33.2 °C (1997)
Lowest monthly mean daily minimum temperature: 23.2 °C (1965)
Highest monthly rainfall ever recorded: 378.7 mm (1954)
Lowest monthly rainfall ever recorded: 21.8 mm (2009)