Mild
Average highs are around 23°C, so days are mild rather than hot.
August verdict
Good for holiday weather
Average highs are around 23°C, so days are mild rather than hot. Sunshine averages 6.8h per day, enough for a balanced month. Rainfall averages 77mm, which is relatively low for holiday planning.

Monthly averages
Temp
23°C
Rain
77mm
Sun
6.8h
Weather score
56
Good
Mild
Average highs are around 23°C, so days are mild rather than hot.
Drier
Rainfall averages 77mm, which is relatively low for holiday planning.
Some sun
Sunshine averages 6.8h per day, enough for a balanced month.
Map
Compare Heidelberg, Baden-Wurttemberg, Germany with nearby places by weather score, rain, sun, temperature, and swim conditions.
August23°C average high
August is one of Heidelberg's warmest months, with daytime heat above the yearly average.
Warmest monthsJune to September
This stretch sets the upper range for average daytime heat.
August77mm average rain
August is wetter than Heidelberg's yearly average, so flexible plans matter more.
Driest monthsJanuary to May and July to December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
August6.8 hours average sun
August is brighter than Heidelberg's yearly average, though the strongest sunshine usually sits closer to the peak months.
Brightest monthsMay to August
This stretch has the strongest sunshine in the monthly averages.
August56 weather score
August is one of Heidelberg's best weather-score months, combining the strongest overall balance in the yearly averages.
Best weather monthsJune to August
These months have the strongest weather score in the monthly averages.