August 21 in Heinaichō, through the years

Typical high: 18°. Hottest: 21.8° (2025). Coldest night: 12.6° (1997).

YEARHIGHLOWRAIN
2025 21.8° 19.7° 3.3 mm
2024 18.4° 16.2° 0 mm
2023 21.6° 21° 0 mm
2022 19.3° 16.8° 0.2 mm
2021 15.4° 14.3° 0 mm
2020 18.4° 17.4° 2.7 mm
2019 16.3° 15.4° 4.6 mm
2018 17.2° 15.9° 1.3 mm
2017 18.8° 16.6° 0 mm
2016 21.8° 20.3° 40.2 mm
2015 18.6° 16.6° 0 mm
2014 17.9° 16.4° 0.1 mm
2013 19.1° 18.3° 0 mm
2012 19.1° 17.5° 0 mm
2011 16.1° 15.6° 0 mm
2010 20.9° 19.5° 0 mm
2009 18.8° 17.1° 32.9 mm
2008 14.8° 14.3° 0 mm
2007 19° 17.4° 0 mm
2006 20° 18.3° 0.3 mm
2005 17.8° 16.9° 5.7 mm
2004 17.2° 15° 0.7 mm
2003 15.2° 14° 0.1 mm
2002 13.6° 12.7° 19.4 mm
2001 16.8° 15.6° 0 mm
2000 16° 15.7° 0 mm
1999 21° 20° 0 mm
1998 18.5° 17.1° 0 mm
1997 14.2° 12.6° 0 mm
1996 16.4° 15.2° 1.8 mm
Source: ERA5 reanalysis (Copernicus C3S)

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