Japan Meteorological Agency announced that 2025 was the hottest summer in Japan’s history. The average temperature was much higher than usual, and extreme high - temperature weather brought many impacts.
Japan has just endured its hottest summer on record, according to the Japan Meteorological Agency (JMA). This news has sent shockwaves through the global community, as it serves as another stark reminder of the escalating effects of climate change.
Record - Breaking Temperatures
The JMA reported that the average temperature in Japan from June to August 2025 was 2.36 degrees Celsius higher than the long - term norm. This figure far surpasses the previous record highs set in 2023 and 2024, which were 1.76 degrees Celsius above average. On August 5, a temperature of 41.8 ° was recorded in the city of Isesaki in Gunma prefecture, which is the highest temperature ever recorded in Japan. Additionally, temperatures of 40 ° or higher were recorded in 30 locations in 13 prefectures across a period of nine days, the largest number since comparable statistics were first kept in 2010.
Reasons for the Extreme Heat
The westerly jet stream generally flowed more to the north than usual throughout the summer of 2025, bringing in warm air that raised temperatures noticeably in northern, eastern, and western Japan. Moreover, long - term global warming has caused temperatures in Japan to rise, making it more likely that such unprecedented high sea temperatures will occur. A strong Pacific high - pressure system also covered a wide area of the archipelago, contributing to the extreme heat.
Impacts of the Heatwave
The extreme heat has had a significant impact on various aspects of Japanese society. The number of people seeking medical treatment due to heat - related issues has soared. According to the Japan Fire Defense Agency, more than 53,000 people have been treated for heatstroke this summer. In addition, the agricultural sector has been severely affected. The high temperature and lack of rain have led to water shortages in rice - growing areas, affecting the growth of rice. This has raised concerns about potential food price increases.
Response and Warning
Weather officials warned that higher - than - usual temperatures are expected to continue through the following month. The JMA has urged the public to take precautions against heatstroke, including using air conditioners as needed and staying hydrated. As the world watches, Japan’s experience serves as a警钟 for other countries to step up their efforts in combating climate change and preparing for the challenges posed by extreme weather conditions.