May · Germany
Best time to visit Heidelberg in May Weather, crowds & prices
Weather in Heidelberg in May
Average temperature 16°C, 86 mm of rain, about 27 days with 6+ hours of sunshine and 70% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
May score
8.5/10
Ranked #4 of 12 months
- Avg temp
- 16°C
- Rainfall
- 86 mm
- Humidity
- 70%
- Days with 6h+ sun
- 27
- Crowd Density
- Moderate Crowds
- Average Expenses
- $$ · Moderate Cost ($$)
May in Heidelberg scores 8.5/10 for sightseeing and cultural travel - an above-average month (#4 of 12). Expect around 16°C, 86 mm of rain, and roughly 27 days with 6+ hours of sunshine this month.
Castle ruins look over the Neckar in Heidelberg, with the Old Bridge and Philosophers' Walk close by.
May is one of the strongest months in Heidelberg (4th)
Temperatures hover around 16°C (60°F) — the kind of month where neither heat nor cold forces the schedule.
Budget for roughly 86 mm of rain this month — a flexible day or two helps — with about 27 days with 6+ hours of sunshine and 15.4 hours of daylight to work around it.
On our climate-comfort scale this is one of the strongest months of the year for Heidelberg at 8.5/10 (4th of 12), just behind June at 9.1/10.
Pack layers you can shed by midday plus one warm layer for the evening, a packable rain layer.
Expect mid-season pricing, and crowds are moderate.
Frequently asked
- What is the weather like in Heidelberg in May?
- In May, Heidelberg averages 16°C, 86 mm of rain, and about 27 days with 6+ hours of sunshine. Its climate-comfort score is 8.5/10.
- Is May a good time to visit Heidelberg?
- May earns a 8.5/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Heidelberg in May?
- Expect about 86 mm of rain in May. Average humidity is 70% and there are about 27 days with 6+ hours of sunshine.
Curated in Heidelberg
Tickets & experiences
Things to do in Heidelberg
Heidelberg, Germany. Live activities and tours from GetYourGuide, matched to this destination.