WEATHER AND CLIMATE IN SINGAPORE: HEAT, HEAVY RAINS, FLOODS BUT NO TYPHOONS

WEATHER IN SINGAPORE

Only two degrees north of the equator, Singapore has a hot, humid, tropical climate the year round. High temperatures are moderated somewhat by sea breezes and high humidity. There are two monsoon seasons, the northeastern (dry) monsoon from December to March and the southwestern (wet) monsoon from June to September. Even between the monsoon seasons, afternoon and early evening thunderstorms frequently occur.

The weather in Singapore can be so steamy that outdoor air conditioners are used for events like concerts. When sightseeing try to get it in early and avoid the mid afternoon heat. The nighttime is also a pleasant time to wander around. The average daytime temperature is 31ºC (88ºF), dropping to around 24ºC (75ºF) in the evenings. The relative humidity averages 70 to 80 percent in the afternoon. Rain falls throughout the year, but is heaviest during the early northeast monsoon from November through January. The driest month is July in the middle of the southeast monsoon. The intermonsoon months of April-May and October are marked by thunderstorms and violent line squalls locally known as Sumatras. The average annual rainfall is 237 centimeters (about 100 inches), and much of the rain falls in sudden showers. Singapore is generally free from typhoons, which usually strike further north. The greatest natural hazard comes from local flash flooding, the threat of which has increased as buildings and paved roads have replaced natural vegetation.

The rainy season is very humid. Most of the rains falls in one- or two-hour long downpours in the afternoon. Sometimes there is a pleasant wind. In the dry season it is still humid and rains occur from time to time. The rainy season in Singapore coincides more or less with the rainy seasons in Borneo, Indonesia and the east coast of Malaysia but it is different from the rainy season on the west coast of Malaysia (from September to November) and from Thailand and the rest of Southeast Asia (from June to October). Cyclones and or typhoons are very rare in Singapore.

Weather conditions in Singapore are monitored closely by the Meteorological Service Singapore, which operates under the National Environment Agency (NEA). The agency provides regular rainfall forecasts, thunderstorm warnings, and flood advisories to help residents prepare for severe weather.

Why Singapore Rarely Gets Hit by Typhoons

Singapore is rarely affected by typhoons or major tropical cyclones. Although the country frequently experiences thunderstorms, heavy rainfall, and occasional squalls, it is largely protected from the powerful storms that regularly strike countries farther north in Southeast Asia, such as the Philippines, Taiwan, China, and Japan. Singapore’s storms are typically short-lived tropical downpours associated with localized convection or regional monsoon systems rather than large rotating cyclones. As a result, the country does not usually experience the extreme winds, storm surges, and widespread destruction associated with typhoons and hurricanes. [Source: Assistant, Quora.com]

Flooding in front of Liat Towers, Singapore in December 2011

Historically, Singapore has recorded virtually no direct landfalls by fully developed typhoons. Instead, the country occasionally experiences indirect effects from regional tropical systems, including periods of heavy rain, gusty winds, rough seas, and localized flooding. These conditions are often associated with monsoon surges, thunderstorms, or weakening tropical disturbances located elsewhere in Southeast Asia. On rare occasions, the outer circulation bands of distant cyclones may influence Singapore’s weather, but the impacts are usually far less severe than those experienced in countries located farther north in the typhoon belt.

One of the main reasons Singapore rarely experiences typhoons is its location near the Equator. Singapore lies at approximately 1.35 degrees north latitude, very close to the equatorial zone. Tropical cyclones require the Coriolis effect—a force created by the Earth’s rotation—to generate and sustain their rotating circulation. Near the Equator, the Coriolis effect is extremely weak and generally insufficient to support the development of organized tropical cyclones. Most typhoons in the western Pacific form farther north, usually between about 5 and 20 degrees north latitude, where rotational forces are much stronger.

The typical movement patterns of typhoons also reduce the likelihood of Singapore being directly affected. Tropical cyclones in the western North Pacific are commonly steered westward or northwestward by subtropical high-pressure systems and atmospheric circulation patterns. Many storms move toward the Philippines, Taiwan, southern China, Vietnam, or Japan before curving northeastward into the Pacific. These storm tracks usually remain well north of Singapore. Even tropical systems that pass through the South China Sea generally stay several hundred kilometers north of the island nation.

Environmental conditions near the Equator further discourage cyclone formation and intensification. Although sea surface temperatures around Singapore are warm enough to support tropical weather systems, the region often experiences vertical wind shear, which disrupts the vertical structure of developing storms. The lack of sufficient rotational force combined with changing wind patterns makes it difficult for tropical disturbances near Singapore to organize into strong cyclones. Storms moving southward toward equatorial regions also tend to weaken before reaching such low latitudes.

When Are Rains the Heaviest in Singapore?

Singapore’s climate is characterized more by frequent rainfall and thunderstorms than by major cyclonic storms. The island experiences a tropical rainforest climate with high humidity, abundant annual rainfall, and regular convective storms throughout the year. Sudden afternoon downpours and lightning storms are common, particularly during the inter-monsoon periods. While these storms can occasionally cause flash flooding or transportation disruptions, Singapore is largely sheltered from the destructive storms because of its unique equatorial location.

The heaviest rainfall in Singapore usually occurs during the Northeast Monsoon season, which lasts from November to January. December is typically the wettest month of the year, followed closely by November and January. During this period, strong monsoon winds bring moist air from the South China Sea, producing long periods of widespread rain and cloudy weather. Monsoon surges can result in several consecutive days of continuous rainfall, occasionally causing localized flooding and traffic disruptions in low-lying urban areas. Temperatures during the Northeast Monsoon are often slightly cooler because of the persistent cloud cover and rainfall. [Source: Hayes & Jarvis, Meteorological Service Singapore]

Although rain can occur at almost any time, Singapore’s heaviest daily downpours usually develop during the late afternoon and early evening. The period between about 1:00 p.m. and 7:00 p.m. is especially prone to sudden thunderstorms. Strong solar heating during the day warms the land surface and causes warm, moisture-laden air to rise rapidly into the atmosphere. As this air cools, large convective clouds form and can quickly develop into intense thunderstorms accompanied by torrential rain, lightning, and gusty winds. These storms are often short but extremely heavy and can reduce visibility and overwhelm drainage systems in some locations.

Another important weather feature in Singapore is the “Sumatra squall,” which commonly occurs during the Southwest Monsoon season from June to September. Sumatra squalls are lines of thunderstorms that form over the Indonesian island of Sumatra before moving eastward across the Strait of Malacca toward Singapore. These storms usually arrive during the pre-dawn or early morning hours and are associated with strong winds, lightning, and heavy rain. While the Southwest Monsoon is generally the driest and hottest season of the year, brief afternoon showers and occasional squalls still occur regularly. The squalls can sometimes produce stronger winds than ordinary local thunderstorms.

Singapore also experiences two inter-monsoon periods, usually from April to May and again from October to November. These transitional seasons are known for producing some of the island’s most intense thunderstorms and lightning activity. Winds during the inter-monsoon periods are lighter and more variable, creating unstable atmospheric conditions that encourage rapid thunderstorm development. Because of its location near the Equator, Singapore is considered one of the world’s most lightning-prone countries. Thunderstorms during these periods often form quickly and can affect one part of the island while another area remains relatively dry.

Climate experts have noted that climate change may increase the frequency and intensity of extreme rainfall events in Singapore and elsewhere in Southeast Asia. Even so, Singapore remains relatively protected from the devastating typhoons that affect countries farther north, such as the Philippines, Taiwan, China, and Japan. Its climate is therefore defined less by giant tropical storms and more by frequent, intense, but usually short-lived equatorial rainstorms.

How Singaporeans Deal With the Heat and Humidity

Living in Singapore means adapting to a tropical climate marked by year-round heat, high humidity, and frequent rainfall. Daytime temperatures typically range between 30°C and 34°C (86°F to 93°F), while humidity levels often exceed 80 percent. Because the island lies close to the Equator, there is little seasonal variation, and warm, humid conditions persist throughout the year. Singaporeans have therefore developed a combination of lifestyle habits, clothing choices, architectural designs, and urban planning strategies to remain comfortable in the climate. Air conditioning, shaded public spaces, and careful daily routines all play an important role in helping residents cope with the weather. [Source: askSingapore, Reddit]

Air conditioning remains one of the most important ways Singaporeans cope with the climate. Homes, offices, shopping malls, buses, trains, schools, and restaurants are usually air-conditioned, creating an extensive indoor cooling network throughout the city. Many residents move through much of the day in climate-controlled environments, transitioning directly from air-conditioned apartments to public transport and workplaces. At home, ceiling fans and standing fans are widely used to improve ventilation and reduce electricity costs. Some households also install solar-control window films, blackout curtains, or energy-efficient cooling systems to limit heat entering buildings. Together, these everyday adaptations and urban design strategies have allowed Singapore to remain highly livable despite its consistently hot and humid tropical climate.

One of the most common strategies is avoiding prolonged outdoor activity during the hottest parts of the day, especially between late morning and mid-afternoon. Many Singaporeans schedule outdoor errands, exercise, and commuting for the early morning or evening when temperatures are slightly cooler. Sudden afternoon thunderstorms are also common, so people often carry umbrellas not only for rain protection but also for shade from the intense tropical sun. Lightweight UV-blocking umbrellas are widely used while walking between public transport stations, shopping centers, and office buildings. Portable rechargeable fans, cooling towels, and insulated water bottles have also become common everyday accessories.

Hydration is considered essential in Singapore’s climate. Residents regularly carry water bottles and take advantage of the country’s clean and safe tap water to refill throughout the day. Cold beverages, iced desserts, and air-conditioned cafés are popular ways of cooling down during hot weather. Frequent showering is also a routine part of daily life, with many people showering two or even three times a day to remain comfortable in the humid conditions. Singapore’s humidity causes perspiration to evaporate more slowly, making people feel sticky and overheated even during relatively short periods outdoors.

Clothing choices in Singapore are strongly influenced by the tropical environment. Most people wear lightweight, breathable fabrics such as cotton, linen, or modern moisture-wicking materials designed to improve ventilation and reduce heat retention. Loose-fitting clothing is preferred because it allows better airflow and helps reduce discomfort caused by humidity. Light-colored clothing is also common because it reflects sunlight more effectively than darker colors. Even in professional workplaces, business attire is often adapted to tropical conditions, and commuters sometimes carry spare clothing or freshen up in office washrooms after traveling in the heat.

Singapore’s urban infrastructure has been designed extensively to reduce exposure to heat and heavy rain. Much of the city is connected by sheltered walkways linking housing estates, bus stops, shopping malls, and MRT stations. These covered pathways allow pedestrians to move around while avoiding direct sunlight and sudden tropical downpours. Public housing blocks are commonly built with open-air ground floors known as “void decks,” which improve airflow and create cooler communal spaces. Trees, rooftop gardens, parks, and vertical greenery are integrated throughout the city as part of Singapore’s long-term “Garden City” and “City in Nature” planning policies aimed at reducing urban heat.

Flooding in Singapore in 2010

In July 2010, Philip Lim of Agence France Presse wrote: “Singaporeans were salvaging cars, soaked belongings and damaged goods after a third flash flood in two months submerged low-lying areas of the city-state. Shops and houses along posh Orchard Road were again hit by floods after heavy rain overwhelmed the drainage system of the wealthy metropolis, which is often lauded for its excellent urban management. The flooding took place just before parliament was to debate the issue following public clamour for explanations for earlier floods, which are normally associated with neighbouring capitals like Manila and Jakarta. [Source: Philip Lim, Agence France Presse, July 17, 2010 ~~]

“Residents in affected houses hauled out sodden furniture and opened windows and doors on Sunday after muddy water from overflowing canals receded. "We never had floods like that," said Peter Wong, 49, a long-time resident in a row of houses in eastern Singapore invaded by calf-high floodwaters on Saturday. "Everything was gone, the carpets as you can see are damaged, the bottom of all the sofa seats are still soaking wet now, after 24 hours. We had to replace a new fridge, the fridge is totally damaged," Wong told AFP."I'm trying to keep a cool head over this but it is frustrating. My life is disrupted," added the hotelier, who failed to take out insurance against "acts of God" like floods. ~~

“The Straits Times said some restaurants lost live fish stored in tanks. A major highway was also closed for two and a half hours, while motorists and commuters had to be rescued from stranded vehicles, but there were no reports of major injuries. The flash floods were the third in a month. Flash floods were a rare occurrence in Singapore until recently, with a climate expert interviewed by the Straits Times attributing the problem to regional weather phenomena such as Typhoon Conson and Indonesian squalls. Critics had blasted the Public Utilities Board (PUB) for not being prepared to handle the first two floods, while the department defending itself by saying abnormal weather conditions and clogged drains were to blame. The flooding issue has become so serious that the Singapore parliament is scheduled to address the problem when it convenes on amid forecasts of more rain.” ~~

Orchard Road to Be Raised after Floods

After the severe floods in 2010, the Singapore government announced that parts of Singapore's famous shopping thoroughfare Orchard Road would be raised to prevent a repeat of the flash floods that hit the area. A spokeswoman from the Public Utilities Board (PUB) told AFP the road will be built up by up to 50 centimetres (20 inches) at low-lying spots. "On average, it will be raised by 30 centimetres," she said. [Source: Agence France Presse, October 27, 2010 \]

AFP reported: “This would elevate the street above a drainage canal that overflowed four months ago and sent a sudden gush of water into the busy tourist district following torrential rains. In total, 1.4 kilometres (nearly a mile) of the road will be raised by laying coats of asphalt in stages. The project is expected to cost S$22 million (US$16.9 million) and is due to be completed by the second quarter of 2011. \

“The PUB will also raise bus shelters, traffic lights, lamp posts and electronic road pricing gantries that charge each vehicle entering the area. In addition to the road raising, the worst-hit building along Orchard Road is installing pop-up barriers to protect shops located below street level, including a Hermes outlet, from floodwaters. Singapore authorities were left red-faced in June after Orchard Road became a muddy stream following heavy rain, a rare smear on the city-state's image as an urban planner's dream. Affected shops including designer outlets had to be shuttered for maintenance and unsightly cleaning. \

Image Sources: Wikimedia Commons

Text Sources: “Encyclopedia of World Cultures Volume 5: East/Southeast Asia:” edited by Paul Hockings, 1993; National Geographic, Live Science, New York Times, Washington Post, Los Angeles Times, Times of London, Lonely Planet Guides, Library of Congress, Singapore Tourism Board, The Guardian, Smithsonian magazine, The New Yorker, Time, Encyclopedia.com, The Conversation, BBC, CNN, Reuters, Associated Press, AFP, Lonely Planet Guides, Google AI, Wikipedia and various websites, books and other publications.

Last updated May 2026