Heatwave in southern China: Causes and effects of climate change
Large swathes of Asia are experiencing extreme weather fluctuations, with heatwave in southern China the climate landscape as one of the most prominent extreme weather events. This phenomenon has not only brought record-breaking temperatures but has also been accompanied by torrential rains and strong winds that have battered Guangzhou and the surrounding areas. This complex situation reflects the escalating direct impacts of climate change and the growing environmental challenges facing major industrialized nations.
The historical context of climate variability in Asia
Historically, southern China was known for its subtropical climate, characterized by hot and humid summers. However, the past few decades have witnessed dramatic transformations. With rapid industrial development and massive urbanization since the late 20th century, carbon emissions have increased, making these environments more vulnerable to global warming. These changes were not sudden; rather, they are the culmination of years of environmental interactions that have disrupted the natural balance, paving the way for unusual, violent, and unpredictable weather patterns.
In the latest incident, Foshan City in Guangdong Province, southern China, experienced violent winds reaching speeds of 35.7 meters per second, equivalent to the intensity of a devastating typhoon making landfall. Strong winds of category 12 were also recorded across several urban districts, prompting a state of alert among local authorities and residents alike to deal with these exceptional conditions.
The economic and social impact of the heatwave in southern China
The significance of the heat wave in southern China and its associated phenomena extends far beyond the local geographical area, reaching regional and international dimensions. Guangdong province is a global industrial and commercial hub, and any disruption to its infrastructure or transportation networks due to extreme weather will inevitably lead to disruptions in global supply chains. Regionally, these temperature fluctuations affect the monsoon wind patterns in Southeast Asia, threatening food security and agricultural production in neighboring countries. Locally, these conditions are placing immense pressure on power grids and healthcare systems.
Expert warnings and an analysis of climate data
In this context, Wu Hongyu, chief expert at the Guangdong Provincial Climate Center of the Guangdong Meteorological Bureau, points out that the real concern lies not in the intensity of a single event, but in the increasingly clear trend of extreme weather and climate events becoming more frequent, stronger, and more intense in recent years. Official data shows that over the past 65 years, the average annual temperature in Guangdong has increased by 0.22 degrees Celsius per decade. Meanwhile, the average number of hot days has increased by about 3.5 days per decade, and the number of days with heavy rainfall jumped to a record high of 10.7 days in 2024, compared to just 3.6 days in 1963.
Adaptation and early monitoring strategies
To address these challenges, authorities released the Guangdong Provincial Climate Change Adaptation Action Plan (2025-2035) in February 2025. Key measures include strengthening extreme weather monitoring and early warning systems, constructing advanced sponge cities to mitigate urban flooding, and improving prevention and mitigation of typhoons, floods, and other disaster risks. Expert Wu emphasizes that urban construction and renewal must be based on new climate data rather than past experiences, stressing that addressing the global challenge of climate change requires a scientific and well-considered response.
