Bonn Weather in August
August in Bonn brings high temperatures, with daytime highs of 24°C (75°F) and nights around 14°C (57°F). Quite a bit of rainfall is expected, around 85 mm (3.3 in), so pack an umbrella.
Rainfall in Bonn in August
Typically, you can expect about 15 days of rain this month, with 85 mm (3.3 in) on average. Neither particularly heavy nor particularly frequent, the rain this month is about average. A light jacket should be enough on most wet days.
Temperature in Bonn in August
Weather in Bonn is at its perfect in August. Highs reach 24°C (75°F), while nights settle around 14°C (57°F). August is part of the summer season. Conditions stay fairly consistent through the month, making it easier to plan what to wear. With overnight lows of 14°C (57°F), evenings can feel noticeably cooler than the daytime. An extra layer is a good idea, though the cool air makes for a good night's sleep.
Sunshine in Bonn in August
Expect a lot of sunshine this month, with about 196 hours of sun. These sunny conditions add to the overall experience.Our weather planner can help you find worldwide destinations with pleasant weather during this period. June, July, August and September typically offer the best weather for Bonn.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Germany, check out our Bonn's climate page.
Bonn Temperature in August
Min Temperature
14°C (57°F)
Max Temperature
24°C (75°F)
Chance of Rain
49%
Precipitation
85 mm (3.3 in)
Rainy days
15 days
Sunshine
196 hours
Percentage Sunshine
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Bonn typically stay consistent throughout August, with daily highs averaging around 24°C (75°F). Nights are cool, with lows typically ranging from 11°C (52°F) to 14°C (57°F).
Average temperatures in August
Historical weather for Bonn in August
Browse day-by-day weather records for Bonn spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Bonn historical weather extremes in August
Based on 49 years of weather observations in Bonn between 1976 and 2025, these are the recorded extremes.
- On August 8, 2003, temperatures climbed to 38°C (100°F), marking the warmest August day on record.
- The coldest August day was on August 17, 2015, with a maximum of 14°C (57°F).
- The coldest night in August in Bonn was on August 13, 1999, with a minimum of 2°C (36°F).
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 →
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What to Wear in Bonn in August
For Bonn in August, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. High rain levels are expected, so pack waterproof gear and an umbrella or poncho. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.What To Do in Bonn in August
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Germany, check out our Bonn's climate page.
See the full Bonn climate overview or explore weather in Germany.
