September 10 in Koper, through the years

Typical high: 26.9°. Hottest: 27.5° (2025). Coldest night: 19.5° (1999).

YEARHIGHLOWRAIN
2025 27.5° 22° 1.5 mm
2024 27° 22° 0.2 mm
2023 27.1° 21.2° 0.3 mm
2022 26.4° 21.9° 0.1 mm
2021 26.2° 22.7° 15 mm
2020 27.1° 21° 0.1 mm
1999 27.1° 19.5° 0 mm
1998 27.2° 21.4° 0 mm
1997 26.7° 19.7° 0 mm
Source: ERA5 reanalysis (Copernicus C3S)

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