Record-Breaking Heatwave Hits Japan
Tokyo experienced a scorching day on July 7, with the temperature in central Tokyo reaching 35 degrees Celsius. This marked the city’s first “extremely hot day” of the year, signaling the onset of a severe heatwave across the country.
The intense heat was driven by a vast high-pressure system that stretched across the Japanese archipelago. By 11 a.m., the Japan Meteorological Agency (JMA) reported that 10 observation points nationwide had already recorded temperatures of 35°C or higher. Additionally, 670 locations had experienced a “hot summer day,” where the mercury climbed to at least 30°C. The widespread nature of the heat indicates a significant shift in weather patterns, raising concerns about public health and safety.
In response to the rising temperatures, the Ministry of the Environment and the JMA issued heatstroke alerts for 32 locations across Japan. This is the highest number of alerts issued this year and marks a notable development as it includes areas in northern Japan for the first time in 2025. Authorities are urging residents to take precautions, such as using air conditioning wisely and staying well-hydrated, especially during peak heat hours.
Several regions saw temperatures exceeding 35°C, with some locations recording even higher readings. In Mima, Tokushima Prefecture, the temperature reached 36.2°C, while Minokamo in Gifu Prefecture hit 36°C. Akiota in Hiroshima Prefecture recorded 35.9°C, and Matsusaka and Kuwana in Mie Prefecture both reached 35.8°C. In central Tokyo, the Chiyoda ward recorded a temperature of 35.6°C, reflecting the severity of the heatwave in the capital.
The prolonged exposure to extreme heat poses serious risks, particularly for vulnerable populations such as the elderly, children, and those with pre-existing health conditions. Public health officials have emphasized the importance of monitoring weather updates and adjusting daily routines to avoid excessive heat exposure.
As the heatwave continues, experts are warning that similar conditions could persist for several days, leading to potential long-term impacts on energy consumption, agriculture, and public health infrastructure. The JMA has advised citizens to remain vigilant and follow safety guidelines to mitigate the effects of the heat.
With climate change contributing to more frequent and intense heat events, the current situation highlights the need for proactive measures to protect communities from the dangers of extreme weather. Local governments and emergency services are preparing for increased demand on healthcare systems and public resources, ensuring that support is available for those most affected.
The ongoing heatwave serves as a reminder of the growing challenges posed by global warming and the importance of adapting to changing environmental conditions. As Japan grapples with these record-breaking temperatures, the focus remains on safeguarding public health and implementing sustainable strategies to cope with future heatwaves.
