Only in early October 2021, we were informed about the extremely start of October 2021 in China (+39,0°C), Japan (+35,7°C), and South Korea (+32,3°C) /https://mkweather.com/extreme-indian-summer-in-east-asia-china-390c-japan-357c-south-korea-323c//.
Extremely hot weather in Japan, Korea, and Taiwan is however persisting until the half of October 2021, with tropical days and heatwaves, never seen in the middle of autumn before.
All first 14 October 2021 days in Japan were tropical, with maximum temperatures in southern islands +30/+36°C.
Lastly, an extreme temperature of +34,0°C was measured on 12. October 2021 in Ushibuka – so high temperature has never been measured so late in the season.
South Korea reported on 10. October 2021 tropical +31,8°C in Daegu, North Korea on 14. October summer +26,7°C in Wonsan.
Taiwan, before the arrival of Typhoon Komapsu /https://mkweather.com/extreme-850-mm-38-h-in-taiwan-and-6253-mm-24-h-in-philippines-from-typhoon-kompasu-a-system-already-in-china-vietnam-with-impact-in-thailand-laos-cambodia-and-myanmar/; https://mkweather.com/tropical-storms-lionrock-and-kompasu-in-philippines-china-taiwan-vietnam-laos-thailand-cambodia-and-myanmar-and-tropical-storm-namtheun-near-japan// reported extreme +38,7°C – the highest temperature ever recorded in Taiwan in October. All near 40% heat index and deadly combination of heat and humidity.
Meanwhile, northern China already reported the first early snowfall and the first serious winter season coldwave.
In northern province Shanxi moreover, extreme floods have appeared in the last few days, with millions affected.
It is forecasted, that cold Arctic air will soon shift above eastern parts of East Asia, including Japan, where anomalous and extreme Indian summer period will be replaced, in Hokkaido maybe with the first snow below 1000 MASL and frosts.