September 9 in Kōyōchō, through the years

Typical high: 18.2°. Hottest: 21.8° (2020). Coldest night: 13.3° (2002).

YEARHIGHLOWRAIN
2025 19.8° 18.6° 0 mm
2024 21.2° 17.3° 0 mm
2023 21.3° 19.8° 24.8 mm
2022 19.6° 17.6° 0 mm
2021 17.5° 16.5° 6.7 mm
2020 21.8° 18.6° 1.2 mm
2019 21.8° 20.2° 0.2 mm
2018 16.6° 15.4° 0.9 mm
2017 17.2° 14.6° 0.1 mm
2016 19.9° 16.2° 128.2 mm
2015 14.8° 14.3° 0 mm
2014 16.8° 15.9° 0 mm
2013 17.3° 16.3° 4.3 mm
2012 18.5° 16.8° 9.6 mm
2011 19.3° 18.2° 0 mm
2010 18.9° 17.3° 0 mm
2009 16.9° 15° 0 mm
2008 18.6° 16.8° 0 mm
2007 19.1° 16.5° 0 mm
2006 17.7° 17° 5.3 mm
2005 19.1° 16.7° 0 mm
2004 17.6° 14.6° 0 mm
2003 15.9° 15.2° 8.3 mm
2002 15.8° 13.3° 0 mm
2001 18.3° 15.4° 14.5 mm
2000 14.6° 13.7° 2.7 mm
1999 20.2° 19° 0 mm
1998 18.2° 17.7° 0 mm
1997 16.3° 15.6° 0 mm
1996 15.4° 13.9° 0 mm
Source: ERA5 reanalysis (Copernicus C3S)

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