According to JMA data, In Sapporo city, Hokkaido prefecture, the days over 30℃ are NOT becoming more common.
There is no trend from 1937 to 2019.
The number of days over 30℃ for 1924 was 31, but last year was 18.
http://www.data.jma.go.jp/obd/stats/etrn/view/daily_s1.php?prec_no=14&block_no=47412&year=1924&month=07&day=&view=p1
http://www.data.jma.go.jp/gmd/risk/obsdl/index.php
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#温暖化?
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リツイートの一部