Bonn
August
Weather in Bonn for August 2025
Your guide to Bonn weather in August - trends and predictions
In general, the average temperature in Bonn at the beginning of August is 22.7 °C. As the month progressed, temperatures tended to moderately rise, reaching an average of 23.7 °C by the end of August.
Bonn experiences an exceptionally high level of rainfall in August, with more than 20 rainy days on average.
Is August a good time to visit Bonn? check out the best time to travel to Bonn page.
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10
Dry days
21
Rainy days
0
Snow days
23°/14°
Temperatures
14 km/h
Avg max wind
74 %
Avg humidity
Bonn in August average weather
Move between months or click on a day
| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  24° | 2 24° | 3  22° | ||||
| 4 21° | 5 24° | 6 23° | 7 21° | 8  21° | 9 22° | 10  25° |
| 11 29° | 12 28° | 13 30° | 14 27° | 15 26° | 16 26° | 17 25° |
| 18  24° | 19 27° | 20  28° | 21 23° | 22 26° | 23  26° | 24 31° |
| 25 24° | 26 24° | 27 23° | 28 24° | 29 26° | 30 22° | 31 23° |
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Temperatures trend during August in Bonn
See the weather trend as well as the moving average line
August weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Aug. | Moderate or heavy rain shower | 24° /16° | 20.6 mm | 5 | |
| 2 Aug. | Moderate or heavy rain shower | 24° /15° | 8.6 mm | 6 | |
| 3 Aug. | Heavy rain at times | 22° /14° | 4.6 mm | 5 | |
| 4 Aug. | Moderate or heavy rain shower | 21° /13° | 1.5 mm | 5 | |
| 5 Aug. | Moderate or heavy rain shower | 24° /13° | 3.4 mm | 6 | |
| 6 Aug. | Moderate or heavy rain shower | 23° /13° | 9.6 mm | 6 | |
| 7 Aug. | Heavy rain at times | 21° /13° | 4 mm | 5 | |
| 8 Aug. | Patchy rain possible | 21° /12° | 0.9 mm | 5 | |
| 9 Aug. | Patchy rain possible | 22° /14° | 5.2 mm | 5 | |
| 10 Aug. | Partly cloudy | 25° /11° | 0 mm | 7 | |
| 11 Aug. | Partly cloudy | 29° /14° | 0 mm | 7 | |
| 12 Aug. | Moderate or heavy rain shower | 28° /17° | 15.4 mm | 6 | |
| 13 Aug. | Patchy rain possible | 30° /16° | 14 mm | 7 | |
| 14 Aug. | Patchy rain possible | 27° /16° | 4.4 mm | 6 | |
| 15 Aug. | Moderate or heavy rain shower | 26° /16° | 6.5 mm | 6 | |
| 16 Aug. | Heavy rain at times | 26° /16° | 4.1 mm | 6 | |
| 17 Aug. | Patchy rain possible | 25° /17° | 6.7 mm | 6 | |
| 18 Aug. | Cloudy | 24° /15° | 2.6 mm | 5 | |
| 19 Aug. | Heavy rain at times | 27° /15° | 0.8 mm | 7 | |
| 20 Aug. | Overcast | 28° /15° | 1.1 mm | 7 | |
| 21 Aug. | Patchy rain possible | 23° /15° | 0.5 mm | 6 | |
| 22 Aug. | Partly cloudy | 26° /13° | 0 mm | 7 | |
| 23 Aug. | Sunny | 26° /14° | 0 mm | 7 | |
| 24 Aug. | Patchy rain possible | 31° /16° | 1.8 mm | 8 | |
| 25 Aug. | Light rain shower | 24° /15° | 4 mm | 6 | |
| 26 Aug. | Partly cloudy | 24° /12° | 0.1 mm | 6 | |
| 27 Aug. | Moderate or heavy rain shower | 23° /12° | 5.8 mm | 6 | |
| 28 Aug. | Overcast | 24° /12° | 0 mm | 6 | |
| 29 Aug. | Moderate or heavy rain shower | 26° /14° | 5 mm | 6 | |
| 30 Aug. | Light rain shower | 22° /14° | 8 mm | 5 | |
| 31 Aug. | Light rain shower | 23° /12° | 2.3 mm | 5 | |
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Important Notice
Our weather forecast for Bonn in August is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Bonn forecast closer to your planned date for the most up-to-date weather information.
Bonn in August - FAQ
What are the expected maximum and minimum temperatures in Bonn during August?
Enjoy moderate daytime temperatures of up to 23° and cooler nights around 14°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Bonn during August?
Significant rainfall exceeding 200.6 mm is expected in Bonn during August, occurring over more than 21 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Bonn during August?
The average wind speed in Bonn during August is 14 km/h, suggesting breezy to windy conditions, depending on your activities.
What to pack to Bonn in August?
As you prepare for your trip to Bonn in August, it's important to consider the typical weather patterns for the time of year. Below is a carefully tailored packing list to ensure that your time in Bonn, during August, is comfortable and enjoyable, regardless of the weather conditions.
- Clothing
- Warm Clothing: Sweaters, hoodies, long pants
- Rain Gear: Lightweight, waterproof clothing
- Footwear
- Waterproof Shoes
- Accessories
- Sunglasses: For sun protection
- Sun Hats: Wide-brimmed hats for sun protection in warm weather
- Scarves: To protect you from the cold wind
- Gloves/Mittens: Essential for cold weather
- Warm Hats: Warm hats for insulation in cold weather
- Umbrellas/Raincoats: For rainy days
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