SeasonMapHeidelberg weather in July
Germany
July in Heidelberg: warm, a little rain, with clean air — an excellent time to visit.
#5 of 12 months in Heidelberg · #474 of 1383 destinations to visit in July · comfort 85/100 (tier A)
Updated September 2026 · climate normals from ERA5 reanalysis
Traveller notes on Heidelberg in July
Other months in Heidelberg
Germany's forum calls June genuinely variable — anywhere from hot and humid around 30-35°C to chilly and rainy at 15-20°C in the same month. Regulars' standard packing list covers both: summer clothes plus a hooded rain jacket and a warm sweater, since Heidelberg's Neckar valley runs a touch milder than much of the rest of the country but not immune to the swings.
Add your own note from Heidelberg's card on the map.
Heidelberg climate normals — July
| Daytime high | 27°C / 81°F | 🌤 warm |
|---|---|---|
| Nighttime low | 16°C / 60°F | |
| Feels like (high) | 28°C / 82°F | |
| Rainfall | 70 mm / 2.8 in | 🌦 some rain |
| Rainy days | 11 days | |
| Humidity | 63% | 💧 humid |
| Dew point | 13°C / 55°F | |
| Sunshine | 12 h/day | |
| Daylight | 15.8 h | |
| Wind | 14 km/h / 9 mph | |
| Air quality (US AQI) | 48 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in Heidelberg in July
How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.
Peak crowdsCastle illumination nights, Summer holidays in Germany, school holidays in 6 of the markets that fill it(estimated)
Peak crowdsBusyShoulder seasonQuiet
Best months for Heidelberg's weather
Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).
Fair weatherHeidelberg's best weather comes in June, August and September — separate windows, not one continuous season.
Best weatherFair weatherToughest weather
What's on in Heidelberg in July
Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.
- Festival
Castle illumination nights
6 Jun – 11 JulMajor festivalCrowdedRed flares light the castle ruin and fireworks go off over the old bridge for about twenty minutes, on the first Saturday of June and again in July. Free, and the riverbank fills from eight. Source ↗
Nearby, and something's on
Within 300 km of Heidelberg — a day trip or a short hop — with something on this month. Never part of the comfort score.
Where is Heidelberg?
Heidelberg in July — FAQ
- Is July a good time to visit Heidelberg?
- July in Heidelberg: warm, a little rain, with clean air — an excellent time to visit. It ranks #5 of 12 months for Heidelberg on SeasonMap's comfort score (85/100).
- What is the weather like in Heidelberg in July?
- In July, Heidelberg averages a daily high of 27.4°C and a low of 15.7°C, with about 70.1 mm of rain over roughly 10.9 rainy days.
- What is the air quality in Heidelberg in July?
- Heidelberg has a mean US Air Quality Index of about 48 in July.
Other months in Heidelberg
Compare Heidelberg in July
Warmer or cooler than Heidelberg in July
Similar destinations in Central Europe — July
Within 300 km: Strasbourg's Storks on the nests around 15 Feb – 31 Aug, and Freiburg's Freiburger Weinfest on 2–7 Jul.