Overview

• Kimotsuki in Kagoshima reached 35.0°C early Sunday afternoon, marking Japan’s latest recorded day with a high of at least 35°C, according to the JMA.
• The milestone eclipsed the prior late-season record set in Itoigawa, Niigata, on October 9, 2013.
• Unseasonable warmth was widespread, with 142 of 914 observation sites hitting 30°C or higher and 32 locations registering their highest October temperatures on record.
• Meteorologists attribute the event to strong high pressure and warm air advection over western Japan.
• The JMA advises continued caution as parts of Kyushu may again top 30°C on Monday, heightening risks of heat-related illness.