Last updated: August 23, 2025
In September, the average temperature in Brunn, Germany hovers around 15°C (59°F). Expect a range from a chilly 1°C (34°F) to a warm 29°C (85°F) throughout the month. With an average precipitation of 55 mm (2.2 in) spread across about 10 days, you might want to keep an umbrella handy. Additionally, the average humidity is quite high at 85%, adding to the overall atmosphere of the season.
In September in Brunn, the average temperature is 15°C (59°F). Maximums can reach 29°C (85°F) and minimums can be as low as 1°C (34°F). This makes it a great time for travelers to experience a pleasant mix of warm days and cool evenings, ideal for outdoor activities and exploration.
In Brunn in September, the precipitation amount is 55 mm (2.2 in) spread over a duration of 10 days.
In Brunn in September, humidity is 85%. With an average temperature of 15°C (59°F), this humidity feels like a warm, damp blanket wrapping around you, making traveling quite uncomfortable and sticky. Be prepared to take frequent breaks and stay hydrated as you navigate the lush, but humid environment.
In Brunn in September, the maximum UV index is 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in Brunn, you can refer to this Hourly UV Index in Brunn.
UV Risk Categories
Weather in Brunn varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Brunn, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 0°C (32°F) | 60 mm (2.3 inches) | 91% | low |
| February Weather | 2°C (36°F) | 56 mm (2.2 inches) | 89% | moderate |
| March Weather | 5°C (41°F) | 59 mm (2.3 inches) | 88% | moderate |
| April Weather | 9°C (49°F) | 39 mm (1.5 inches) | 84% | high |
| May Weather | 13°C (56°F) | 103 mm (4.0 inches) | 77% | very high |
| June Weather | 19°C (66°F) | 86 mm (3.4 inches) | 82% | very high |
| July Weather | 19°C (67°F) | 84 mm (3.3 inches) | 83% | very high |
| August Weather | 19°C (67°F) | 105 mm (4.1 inches) | 84% | very high |
| September Weather | 15°C (59°F) | 55 mm (2.2 inches) | 85% | high |
| October Weather | 10°C (50°F) | 59 mm (2.3 inches) | 88% | moderate |
| November Weather | 4°C (40°F) | 45 mm (1.8 inches) | 88% | low |
| December Weather | 2°C (36°F) | 90 mm (3.5 inches) | 91% | low |