Forecast

WEATHER OUTLOOK (15 May – 1 June 2026)

1    Inter-monsoon conditions are expected to prevail over Singapore and the surrounding region with winds mostly light and variable in direction.

2    In the second fortnight of May 2026, short-duration thundery showers are expected over parts of the island on most afternoons, occasionally extending into the evening. Additionally, Sumatra squalls may bring widespread thundery showers accompanied by gusty winds during the pre-dawn hours and morning on a few days. The total rainfall for this period is forecast to be near the long-term average across most parts of the island.

3    For the remainder of May 2026, the daily maximum temperatures are expected to range between 33 degrees Celsius and 34 degrees Celsius on most days, with highs of around 35 degrees Celsius on a few days.

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 OF THE PAST TWO WEEKS (1 – 14 May 2026)

5    In the first half of May 2026, inter-monsoon conditions prevailed over Singapore, with prevailing winds generally light and variable in direction. On some days, the low-level winds shifted to blow from the south or southwest.

6    In the past fortnight, thundery showers fell over parts of Singapore on most days. On 8 May 2026, regional convergence of winds brought moderate to heavy thundery showers over many parts of Singapore in the evening. The daily total rainfall of 114.6 mm recorded around Tampines area that day was the highest rainfall recorded for the first fortnight of May 2026.

7    Although it rained on most days during the first half of the month, there were still some warm days. There were six days where maximum temperatures of 34 degrees Celsius or more were recorded. The highest daily temperature of 35.1 degrees Celsius was recorded at Paya Lebar on 2 May 2026.

8    Most parts of the island recorded above-average rainfall in the first half of May 2026. The area around Paya Lebar registered rainfall of 189 per cent above average, and the area around Bedok North registered rainfall of 14 per cent below average.

CLIMATE STATION STATISTICS

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

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