Central Tokyo has recorded a historic streak of 10 consecutive days with temperatures reaching or exceeding 35 degrees Celsius, setting a new record for the longest such heatwave since records began in 1875. On August 27, 2025, the temperature in central Tokyo peaked at 36.0 degrees Celsius, marking the 10th straight day of intense heat and surpassing the previous record of 9 consecutive days set in 2022. This period also marks the highest number of annual "mousho-bi" (days with temperatures above 35 degrees Celsius) with 23 days, breaking the previous annual record. The Japan Meteorological Agency and the Ministry of the Environment have issued heatstroke warning alerts across multiple prefectures from Tohoku to Kyushu, urging residents to stay hydrated, avoid prolonged outdoor activities, and use air conditioning indoors. The ongoing heatwave is expected to persist through August 27 and 28, with some regions such as Nagoya forecasted to approach temperatures near 40 degrees Celsius. Authorities continue to emphasize the importance of heatstroke prevention measures amid this prolonged period of severe heat.