September 4 in San José, through the years

Typical high: 29.8°. Hottest: 34.7° (2019). Coldest night: 18° (2001).

YEARHIGHLOWRAIN
2025 33° 18.7° 0 mm
2024 30.9° 20.1° 5.3 mm
2023 30.5° 20° 5.6 mm
2022 28.4° 20.7° 3.9 mm
2021 29.4° 19.7° 9.6 mm
2020 29.7° 20° 11.5 mm
2019 34.7° 19.9° 0.2 mm
2018 31.2° 18.8° 0.6 mm
2017 29.9° 18.7° 0.1 mm
2016 30.2° 19.1° 2.5 mm
2015 29.9° 19.2° 9.3 mm
2014 29.9° 18.9° 1.8 mm
2013 28.3° 19.1° 6.4 mm
2012 29.3° 19.2° 2.3 mm
2011 30.1° 19° 0.6 mm
2010 30° 18.6° 5.8 mm
2009 30.5° 19° 8 mm
2008 29° 19.2° 8.2 mm
2007 26.3° 18.4° 23.4 mm
2006 31.3° 18.2° 0.8 mm
2005 27.5° 18.9° 7.8 mm
2004 30.2° 19.4° 8 mm
2003 31.9° 18.8° 1 mm
2002 28.7° 19.5° 4.5 mm
2001 27.7° 18° 2.9 mm
2000 28.1° 18.4° 1.1 mm
1999 28.9° 18.2° 0.7 mm
1998 29.1° 19.6° 7.3 mm
1997 29.7° 18.4° 1.2 mm
1996 28.3° 18.3° 5.5 mm
Source: ERA5 reanalysis (Copernicus C3S)

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