Recently in SapporoHeat islandPhenomenonJapan's three largest citiesAs remarkable as. In January, the lowest temperature in January in Sapporo has risen by 100 degrees, above +1 degrees in Nagoya and +6.5 degrees in Osaka, and close to +4.3 degrees in Tokyo.. Sapporo District Meteorological ObservatoryIs installed in SapporoCity centerHowever, due to the heat island phenomenon, the minimum ....