August 20 in Heiniemi, through the years

Typical high: 20°. Hottest: 27.4° (2022). Coldest night: 1.8° (2009).

YEARHIGHLOWRAIN
2025 12.5° 5.2° 5.6 mm
2024 21.1° 8.5° 0 mm
2023 21.9° 5.7° 0 mm
2022 27.4° 18.3° 0.3 mm
2021 16.8° 11.8° 1.2 mm
2020 25.6° 14.1° 1.4 mm
2019 19.8° 12° 0.5 mm
2018 16.5° 9.5° 0 mm
2017 18.6° 13.5° 0.2 mm
2016 20.2° 12.6° 12.7 mm
2015 23.1° 8.1° 0 mm
2014 17.7° 11.1° 0.3 mm
2013 22.6° 9.4° 0 mm
2012 15.5° 4.6° 0 mm
2011 17.9° 9.5° 0.1 mm
2010 19.1° 4.2° 0 mm
2009 16.8° 1.8° 0 mm
2008 19.4° 13.3° 0.6 mm
2007 20.2° 11.2° 2.2 mm
2006 22.5° 9.1° 0.4 mm
2005 23° 13.1° 0 mm
2004 18.9° 11.6° 18 mm
2003 20.2° 13.6° 7.9 mm
2002 26.5° 13.1° 0 mm
2001 19.9° 4.7° 0 mm
2000 17.3° 8.3° 2 mm
1999 16° 7.2° 0 mm
1998 15.8° 7.1° 0 mm
1997 21.1° 12.9° 0 mm
1996 25.9° 14.3° 0 mm
Source: ERA5 reanalysis (Copernicus C3S)

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