Last updated: August 23, 2025
In September, the average temperature in Nonnenhorn, Germany is a pleasant 15°C (59°F), with daytime highs reaching up to 26°C (80°F) and nighttime lows dipping to 4°C (39°F). Visitors should be prepared for 117 mm (4.6 in) of precipitation spread over approximately 12 days, and the air is typically quite humid, with an average humidity of 83%.
In September in Nonnenhorn, the average temperature is 15°C (59°F), with maximums reaching up to 26°C (80°F) and minimums dropping as low as 4°C (39°F). This mild climate makes Nonnenhorn an ideal destination for travelers seeking comfortable weather during their visit.
In Nonnenhorn in September, the total precipitation amount is 117 mm (4.6 in), occurring over a span of 12 days.
In Nonnenhorn in September humidity is 83%. With an average temperature of 15°C (59°F), this humidity feels like a cozy, damp embrace that can be quite stifling for traveling, making even short walks feel more exhausting than they should, and prompting a need for frequent breaks in shaded or air-conditioned areas.
In Nonnenhorn 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 Nonnenhorn, you can refer to this Hourly UV Index in Nonnenhorn.
UV Risk Categories
Weather in Nonnenhorn varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Nonnenhorn, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 0°C (33°F) | 109 mm (4.3 inches) | 92% | low |
| February Weather | 2°C (37°F) | 83 mm (3.3 inches) | 89% | moderate |
| March Weather | 5°C (42°F) | 98 mm (3.8 inches) | 87% | moderate |
| April Weather | 9°C (49°F) | 76 mm (3.0 inches) | 84% | high |
| May Weather | 13°C (56°F) | 142 mm (5.6 inches) | 80% | very high |
| June Weather | 18°C (65°F) | 152 mm (6.0 inches) | 82% | very high |
| July Weather | 19°C (67°F) | 146 mm (5.7 inches) | 83% | very high |
| August Weather | 19°C (67°F) | 175 mm (6.9 inches) | 80% | very high |
| September Weather | 15°C (59°F) | 117 mm (4.6 inches) | 83% | high |
| October Weather | 11°C (51°F) | 118 mm (4.7 inches) | 90% | moderate |
| November Weather | 5°C (42°F) | 73 mm (2.9 inches) | 88% | moderate |
| December Weather | 2°C (36°F) | 131 mm (5.2 inches) | 90% | low |