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Heidelberg Weather in August
August in Heidelberg averages 26°C (79°F) during the day and 15°C (59°F) at night. Quite a bit of rainfall is typical this month, with around 62 mm (2.4 in) on average. An umbrella is a good idea.
Rainfall in Heidelberg in August
Past climate data indicates that roughly 14 days will see rain, totalling around 62 mm (2.4 in) for the month. The rainfall pattern this month is fairly balanced. Showers tend to be moderate rather than extreme.
Temperature in Heidelberg in August
Weather in Heidelberg is at its excellent in August. Highs reach 26°C (79°F), while nights settle around 15°C (59°F). Experience the summer season in August. This kind of day-to-night contrast is typical for this time of year. With lows of 15°C (59°F), nights are cool. If you're out after dark, an extra layer will keep you comfortable. The cooler air at night is also great for getting a good rest.
Sunshine in Heidelberg in August
Expect a lot of sunshine this month, with about 220 hours of sun. These sunny conditions add to the overall experience.If your ideal day consists of dry skies and pleasant temperatures, May, June, July, August and September typically offer the best circumstances for Heidelberg.
Heidelberg Temperature in August
Min Temperature
15°C (59°F)
Max Temperature
26°C (79°F)
Chance of Rain
47%
Precipitation
62 mm (2.4 in)
Rainy days
14 days
Sunshine
220 hours *
Percentage Sunshine
*
* Data from: Mannheim, Germany (19 KM, 11 Miles).
Heidelberg Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Heidelberg - and find the best time to visit.
Daily Historical Temperatures
48-year average (1976-2025)
Based on our historical records, temperatures in Heidelberg typically stay consistent throughout August, with daily highs averaging around 26°C (79°F). Nights are pleasant, with lows typically ranging from 13°C (55°F) to 16°C (61°F).
Average temperatures in August
Historical weather records for Heidelberg in August
Browse day-by-day weather records for Heidelberg spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Heidelberg historical weather extremes in August
Based on 21 years of weather observations in Heidelberg between 2005 and 2026, these are the recorded extremes.
- The warmest day in August was on August 7, 2015, with a maximum of 38°C (100°F).
- On August 29, 2021, Heidelberg saw its coldest August day with temperatures maxing out at 15°C (59°F).
- The coldest night in August in Heidelberg was on August 11, 2016, with a minimum of 7°C (45°F).
- The wettest August day on record brought 39 mm (1.5 in) of precipitation to Heidelberg (August 26, 2014).
Best Places in Germany in August
Find out more about the weather in Germany and which places have the best travel conditions in this month. See all of Germany in August →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Heidelberg in August
Warm weather calls for comfortable, breathable clothing in August. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). Rain is likely on several days, so bring a good rain jacket. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.
What To Do in Heidelberg in August
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Swimming9/10 -
Cycling8/10 -
Walking8/10 -
Camping8/10 -
Outdoor sports8/10
Heidelberg 3-Day Forecast
More climate data for Heidelberg
See the full Heidelberg climate overview or explore weather in Germany.
Popular in August
Where to go in August - average daytime high across popular destinations.
Berlin
26°C (79°F) Düsseldorf24°C (75°F) Hanover24°C (75°F) Munich25°C (77°F) Cologne25°C (77°F) Hamburg24°C (75°F) Winterberg
22°C (72°F) Binz
21°C (70°F) Bucket list
Need travel inspiration? Check out our bucket list articles and be inspired.
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