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Heidelberg — weather in May

18.2°C Daytime temperatures 9.9°C Night temperatures 12 Sunny days 14.6-16 Sun (hours) 5 Rainy days 66.7 mm Precipitation 0°C water temperature
Air temperature
2022 2021 2020 2019 2018 2017 2016 2015 2014 2013
The maximum daily temperature 28.5°C — 27 May 2018.
The maximum night temperature 19.5°C — 31 May 2018.
The minimum daily temperature 3.5°C — 11 May 2020.
The minimum night temperature 0°C — 25 May 2013.
Sunny, cloudy and gloomy days
Precipitation, mm
Maximum precipitation 73.9 mm — June. Minimum precipitation 33.3 mm — April.
Wind speed, km / h
Maximum wind speed 12.9 km / h — February. Minimum wind speed 9 km / h — September.
Number of hours of sunshine
The maximum number of hours of sunshine per day 10 h. — July. The minimum number of hours of sunshine per day 3.1 h. — January.
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