Heidelberg

What is the climate like in Heidelberg?

The best time to visit Heidelberg is typically May – October, with trip comfort peaking in September (7.8/10). Heidelberg is warmest in October, when daily highs average 80°F (26°C), and coolest in July, when lows fall to about 37°F (3°C). The wettest month is typically December and the driest is July; the year sees roughly 31 in (792 mm) of precipitation.

• Best time to visitMay – October — comfort peaks in September (7.8/10)
• Warmest monthOctober — average high 80°F (26°C)
• Coolest monthJuly — average low 37°F (3°C)
• Wettest monthDecember (5.7 in (144 mm))
• Driest monthJuly (0.1 in (4 mm))
• Annual precipitation31 in (792 mm)
• Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
• Records fromJohannesburg Intl, 42 km away (1973-2020)