Wedding Weather in Heidelberg
Historical weather statistics for August 17.
Average Temperature
20.2°C
Min: 14.3°C | Max: 26.3°C
After dark
14.3°C
90% of years dropped below 18 °C
Rain Risk
39%
Rain of ≥1 mm · 450 days analysed
Heavy rain (≥5 mm): 14%
Precipitation
2 mm
Daily average 1996-2025
Average wind
17 km/h
Max 26 km/h · Light breeze — secure veils and weighted linens
Top 3 dates to get married in Heidelberg in August
Based on 30 years of historical weather, these are the dates with the best combination of temperature and lowest rain risk.
Mandatory Plan B: book a marquee or covered hall
39% rainWith between 35% and 60% historical probability, rain is a realistic scenario. Don't improvise on the day.
- 1
Book a full marquee with flooring, heating and side closures (budget €3,000-8,000).
- 2
Negotiate with your venue that the covered space fits ceremony + cocktail + dinner.
- 3
Talk to catering: you'll need paved areas to keep the service running if it rains.
- 4
Brief the photographer: plan alternatives for outdoor shots in well-lit indoor spaces.
We'll alert you about the weather for your wedding in Heidelberg
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Weather History for August 17 in Heidelberg
Real weather data recorded on this date, year by year.
Across 450 days analysed (30 years of history for this date plus the 7 days either side), it rained 39% of the time (≥1 mm).
Attire & Styling Recommendations
Perfect Weather Wedding: Perfect temperature. Allows total freedom in bridal gown designs (strapless, sleeveless, flowing chiffon). Guests will feel comfortable without extra layers, and standard suits will be perfect.
Nights typically drop to 14 °C: in 90% of years it was 18 °C or colder. Tell your guests to bring a jacket.
Photography & Golden Hour
Estimated sunset at 19:41 (local solar time). Schedule your ceremony around 17:41 to capture the golden hour (18:51 - 19:41) in your photos.
Time computed from solar astronomy. Civil time (with DST and political timezones) may differ by ±1h.
Annual Averages: Month-by-Month in Heidelberg
Plan ahead. Compare average temperatures, historical rain days, and the weather comfort index (Quality score) calculated for each month of the year.
| Month | Avg Temp | Min / Max | Rainy Days (Avg) | Rain Risk | Comfort Score |
|---|---|---|---|---|---|
| January | 0.2°C | -2.3°C / 3.4°C | 12.5 days | 40% | 1 / 10 |
| February | 1.6°C | -1.6°C / 5.5°C | 11.5 days | 40% | 1 / 10 |
| March | 5.1°C | 0.8°C / 10.1°C | 11.5 days | 37% | 1 / 10 |
| April | 9.4°C | 3.9°C / 14.8°C | 10.3 days | 34% | 2.2 / 10 |
| May | 14.1°C | 8.5°C / 19.3°C | 13.4 days | 43% | 3.4 / 10 |
| June | 18.4°C | 12.3°C / 23.7°C | 12.5 days | 42% | 5.2 / 10 |
| July | 20.2°C | 14.2°C / 25.9°C | 14.2 days | 46% | 5.6 / 10 |
| August | 20°C | 14.1°C / 26°C | 12.6 days | 41% | 6 / 10 |
| September | 15.5°C | 10.1°C / 21.5°C | 10.6 days | 35% | 4.6 / 10 |
| October | 10.3°C | 6.3°C / 15.5°C | 12.3 days | 40% | 2.2 / 10 |
| November | 4.7°C | 2°C / 8.4°C | 12.3 days | 41% | 1 / 10 |
| December | 1.3°C | -1°C / 4.2°C | 14.2 days | 46% | 1 / 10 |
Marry in Heidelberg
Check catering prices, hotels, legal requirements, and recommended vendors to marry in Heidelberg.
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