Widespread Heatwave to Hit China: Temperatures to Soar in Coming Week
As the summer months approach, concerns about high temperatures and their impact on daily life are on the rise. According to recent forecasts from the Central Meteorological Observatory, a significant portion of China is bracing for a week-long heatwave, with areas including the southern part of Hebei, the Yellow-Huai region, the Jianghan and Jianghuai regions, the northern part of Jiangnan, the Guanzhong area of Shaanxi, and the Sichuan Basin expected to experience persistent high temperatures. Temperatures in some areas are predicted to soar as high as 39°C to 41°C, with a significant portion of these regions also experiencing high humidity, which will enhance the perception of heat, making it feel even hotter.
13 July 2025
Experts assure that meteorological workers will not intentionally report high or low temperatures, and evaluations of forecasters' predictions are based on accuracy. The temperatures reported by meteorological departments are measured using thermometers inside a Stevenson screen, a standardized enclosure that protects the instruments from direct sunlight, rain, and other environmental factors. This setup, mandated by the World Meteorological Organization, ensures consistency in temperature measurements worldwide, allowing for comparative analyses. However, the temperature readings from these screens can differ from the temperatures experienced on asphalt or concrete roads, particularly under intense sunlight, with the surface temperature of roads being 4°C to 5°C higher than the air temperature measured in the Stevenson screen.
The perceived temperature, or "feels-like" temperature, is influenced by several factors, including humidity, wind speed, and individual differences such as clothing, activity level, and personal health. High humidity levels can make the air feel hotter because the body's ability to cool itself through sweating is impaired. For instance, when the air temperature reaches around 33°C and the relative humidity is about 80%, individuals are likely to feel extremely hot and uncomfortable, increasing the risk of heat-related illnesses.
In response to public needs, meteorological services are moving towards providing more detailed and user-friendly forecasts, including predictions of the perceived temperature. This shift aims to better prepare people for the actual conditions they will face, not just the numerical value of the temperature. Recently, the National Health Commission and the China Meteorological Administration issued the country's first national heat health risk warning and health tips, offering the public guidance on how to protect themselves during high-temperature events.
To protect against the heat, residents are advised to take preventive measures such as staying hydrated by drinking plenty of water, using sunhats, sunglasses, sunscreen, and light, breathable clothing. Staying hydrated by drinking plenty of water is also highly recommended. For those with outdoor jobs or responsibilities, regular breaks in cool, shaded areas can help mitigate the effects of the heat. It is also essential to monitor one's health and be aware of the signs of heat exhaustion or heatstroke, which include dizziness, weakness, excessive sweating, and skin that feels hot to the touch.
Additional measures to stay safe during the heatwave include using cooling devices such as air conditioners or fans, limiting outdoor activities to early morning or evening, and dressing in lightweight, light-colored clothing. It is also crucial to stay informed about the weather forecast and heat index warnings, and to check on vulnerable individuals such as the elderly, young children, and people with pre-existing medical conditions who may be more susceptible to heat-related illnesses.
By taking these precautions and understanding the factors that influence our perception of heat, individuals can reduce their risk of heat-related illnesses and stay safe during the impending heatwave. It is also essential for communities to come together to support vulnerable members and ensure everyone's safety during this period of extreme weather.
