August 21 in Karlsö, through the years

Typical high: 20.1°. Hottest: 27.2° (1997). Coldest night: 8.9° (2025).

YEARHIGHLOWRAIN
2025 14.6° 8.9° 0.8 mm
2024 21.7° 14.5° 3.4 mm
2023 20° 15.7° 1.2 mm
2022 20.5° 16.1° 21 mm
2021 15.5° 12° 1.5 mm
2020 23.7° 15.3° 0 mm
2019 19.2° 13.6° 0.2 mm
2018 17° 11.7° 0 mm
2017 20° 11.6° 0.4 mm
2016 18.4° 13.2° 10.1 mm
2015 21.7° 11.3° 0 mm
2014 17.5° 12.8° 0 mm
2013 22.6° 12.6° 0 mm
2012 17.7° 12.2° 2.1 mm
2011 19.8° 13.8° 1.9 mm
2010 20.5° 14.9° 1.1 mm
2009 18.8° 15° 0 mm
2008 18.6° 14.9° 0 mm
2007 23.3° 14.9° 0 mm
2006 21.8° 14.1° 0.5 mm
2005 18.1° 11.5° 0 mm
2004 20.7° 16.2° 0.2 mm
2003 20.9° 13.8° 0 mm
2002 27° 14.3° 0 mm
2001 19.6° 14.6° 0 mm
2000 18.3° 13.7° 0.5 mm
1999 15.9° 11° 0 mm
1998 16.5° 14.1° 4.3 mm
1997 27.2° 16.1° 0 mm
1996 26.7° 16.4° 0 mm
Source: ERA5 reanalysis (Copernicus C3S)

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