Japan has officially introduced the term 'kokushobi' to describe days when temperatures soar to 40°C (104°F) or higher, a response to the country's record-breaking summer heat. The Japan Meteorological Agency (JMA) conducted a national survey, receiving 478,000 responses, to find a fitting description for the extreme heat experienced during the summer of 2025, where average temperatures were significantly above normal. Cities like Tokyo and Kyoto have seen a marked increase in the number of days exceeding 35°C, highlighting the growing intensity and frequency of heatwaves, a trend largely attributed to climate change.