September 11 in Ahvenniemi, through the years

Typical high: 15.9°. Hottest: 21.9° (2025). Coldest night: 4.2° (2008).

YEARHIGHLOWRAIN
2025 21.9° 14.4° 0 mm
2024 17.6° 15.2° 0.9 mm
2023 19.1° 14.4° 0 mm
2022 15.2° 6.6° 0 mm
2021 15.5° 8.7° 0.9 mm
2020 12.5° 7.8° 0.4 mm
2019 18.1° 14.2° 1 mm
2018 17.1° 12.9° 10 mm
2017 15.7° 10° 4.1 mm
2016 19° 12.4° 0 mm
2015 18.5° 6.8° 0 mm
2014 18.9° 10.4° 0 mm
2013 17.3° 11.5° 0.2 mm
2012 19.1° 11.7° 1.7 mm
2011 15.1° 10° 0 mm
2010 12.9° 10.3° 2.7 mm
2009 16.4° 6.8° 0.2 mm
2008 9.2° 4.2° 0.1 mm
2007 13.8° 4.9° 0 mm
2006 17.9° 9.7° 0 mm
2005 14.5° 4.9° 0 mm
2004 15.4° 8.5° 0 mm
2003 14.2° 0 mm
2002 15.6° 4.8° 0 mm
2001 14.2° 8.3° 0.1 mm
2000 12.1° 7.2° 0.8 mm
1999 17.3° 0 mm
1998 17.5° 13.8° 2.7 mm
1997 15.3° 10.3° 2.3 mm
1996 10.4° 6.4° 2.9 mm
Source: ERA5 reanalysis (Copernicus C3S)

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