Unusual Monsoon Surge Sparks Climate Concerns

SINGAPORE – Recent heavy rainfall in Singapore and across South-east Asia, while not unusual during the monsoon season, has reignited concerns about the long-term effects of climate change on regional weather patterns. Experts warn that wetter conditions could persist through the first quarter of 2025, influenced by global climate phenomena like La Niña.

Expert Insights: Climate Change and Rising Precipitation

Professor Winston Chow, an urban climate expert from Singapore Management University, highlighted that while the current monsoon surge aligns with historical patterns, climate change is expected to increase precipitation levels over the long term.
“Rising temperatures increase the likelihood of flooding in monsoon regions in South, Southeast, and East Asia,” Prof. Chow explained, emphasizing the role of global warming in intensifying weather extremes.

La Niña’s Return: A Key Factor in Prolonged Rainfall

Meteorologists anticipate the return of La Niña, a global climate phenomenon characterized by the large-scale cooling of ocean surface temperatures in the central and eastern equatorial Pacific. This cooling influences global weather patterns, often bringing drought to some areas while triggering heavy rainfall and flooding in others.

During La Niña events, intensified westward-blowing trade winds push warm water toward the maritime continent, which includes countries like Singapore and Indonesia. This concentrated warmth fuels the formation of rain clouds, resulting in above-average precipitation over equatorial Southeast Asia.

If La Niña develops between January and March 2025 as forecasted, typically dry months such as February and March could experience heightened and prolonged rainfall, increasing the risk of flooding in low-lying areas.

Comparing 2025 to Previous Weather Trends

Singapore has already experienced higher-than-average rainfall in January, with several days of continuous downpours disrupting daily activities. While the northeast monsoon season typically brings heavy rain from December to March, this year’s conditions appear wetter than in previous years, consistent with predictions of a long-term shift toward heavier precipitation due to climate change.

Implications for Singapore and Southeast Asia

The potential for extended wet weather raises concerns about infrastructure preparedness to manage flooding, particularly in urban areas. Governments across the region, including Singapore, are urged to prioritize climate resilience measures and adapt to increasingly unpredictable weather patterns.

Looking Ahead: Staying Informed and Prepared

As weather patterns evolve, the public is advised to stay updated on forecasts and take necessary precautions against heavy rainfall and potential flooding. National meteorological agencies continue to monitor developments, ensuring timely updates on the La Niña phenomenon and its implications for the region. (zai)