September 7 in Koyama, through the years

Typical high: 27.3°. Hottest: 30.4° (2025). Coldest night: 20° (2002).

YEARHIGHLOWRAIN
2025 30.4° 21.6° 13.7 mm
2024 29.3° 21.9° 2.9 mm
2023 29.3° 21.8° 4 mm
2022 26.2° 21.3° 25 mm
2021 28.9° 21.7° 2.9 mm
2020 29.7° 20.9° 5.6 mm
2019 28.2° 21.7° 5.2 mm
2018 28° 21.6° 14.8 mm
2017 28.3° 22.3° 22.3 mm
2016 26.5° 21.5° 8.5 mm
2015 27.4° 20.9° 2.3 mm
2014 25.2° 21.1° 19.3 mm
2013 26.1° 20.8° 10.5 mm
2012 27.7° 21.3° 2.4 mm
2011 28.2° 21.4° 10.3 mm
2010 26.2° 20.3° 10.8 mm
2009 26.7° 20.8° 2.6 mm
2008 28.9° 21.7° 9.8 mm
2007 25.4° 20.6° 6.5 mm
2006 28.2° 21.2° 5.5 mm
2005 23.7° 20.8° 23.5 mm
2004 27.6° 20.5° 1.8 mm
2003 28.8° 20.6° 0 mm
2002 27.4° 20° 0.4 mm
2001 23.5° 20.6° 5.4 mm
2000 27.6° 21° 2.7 mm
1999 26.2° 21.1° 0 mm
1998 25.7° 21.2° 11.8 mm
1997 27° 20.6° 5.4 mm
1996 27.3° 20.7° 5 mm
Source: ERA5 reanalysis (Copernicus C3S)

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