The 1981-2010 long-term mean annual rainfall total is 2165.9mm.įig 6 – Hourly variation of temperature for each month (1981-2010)Ĭompared to countries in the temperate regions, temperatures in Singapore vary little from month to month and also from day to day. Much of the rain is heavy and accompanied by thunder. Rainfall is plentiful in Singapore and it rains an average of 167 days 1 of the year. Generally wetter than the Inter-monsoon Period earlier.Short duration showers/thunderstorms in the afternoon.Occasional “Sumatra Squalls” with wind gusts of 40-80 km/h occuring between the predawn hours and.Southwest Monsoon Season (June-September)

Hot afternoons are common (maximum temperature above 32☌).

Thunderstorms, at times severe, occur in the afternoon.

Light and variable, interacting with land and sea breezes Season, usually from late January to early March.

Windy and relatively dry in the later part of the.

Rapid development of afternoon and early evening.

Monsoon Surges cause widespread continuous moderate to heavy rain, at times with 25-35 km/h winds in the first half of the season, usually from December to early January.

Northeast Monsoon Season (December-early March) The occurrence of these events at different times of year is outlined in the following table. Sumatra squalls, an organised line of thunderstorms travelling eastward across Singapore, having developed over the island of Sumatra or Straits of Malacca west of us Īfternoon and evening thunderstorms caused by strong surface heating and by the sea breeze circulation that develops in the afternoon. Monsoon surges, or strong wind episodes in the Northeast Monsoon flow bringing about major rainfall events The Northeast Monsoon occurs from December to early March, and the Southwest Monsoon from June to September.The major weather systems affecting Singapore that can lead to heavy rainfall are: Singapore’s climate is characterised by two monsoon seasons separated by inter-monsoonal periods (see table below). However, many variables exhibit prominent diurnal (or daily) variations from hour to hour, indicating the strong influence that solar heating has on the local climate. Many of its climate variables, such as temperature and relative humidity, do not show large month-to-month variation. Singapore is situated near the equator and has a typically tropical climate, with abundant rainfall, high and uniform temperatures, and high humidity all year round.

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