Last updated: August 23, 2025
In Gross-Umstadt, Germany, the average temperature in September hovers around 15°C (60°F), making it a pleasant time to explore. However, be prepared for a range, with minimums dipping to 3°C (38°F) and maximums soaring to 31°C (88°F). During this month, you can expect about 56 mm (2.2 in) of precipitation spread over 9 days, along with a high average humidity of 85%.
In September in Gross-Umstadt, the average temperature is 15°C (60°F). The maximum can reach 31°C (88°F), and the minimum can be as low as 3°C (38°F). This makes Gross-Umstadt a great destination for travelers looking for mild weather with the possibility of warm days and cool evenings.
In Gross-Umstadt in September, the precipitation amount is 56 mm (2.2 in) over a period of 9 days.
In Gross-Umstadt in September, humidity is 85%. With an average temperature of 15°C (60°F), this humidity feels like a warm, sticky embrace, making outdoor activities somewhat uncomfortable for travelers who may find themselves constantly seeking shade and hydration.
In Gross-Umstadt 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 Gross-Umstadt, you can refer to this Hourly UV Index in Gross-Umstadt.
UV Risk Categories
Weather in Gross-Umstadt varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Gross-Umstadt, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 2°C (35°F) | 75 mm (2.9 inches) | 91% | low |
| February Weather | 3°C (39°F) | 68 mm (2.7 inches) | 89% | moderate |
| March Weather | 6°C (43°F) | 90 mm (3.5 inches) | 87% | moderate |
| April Weather | 10°C (50°F) | 40 mm (1.6 inches) | 83% | high |
| May Weather | 14°C (57°F) | 94 mm (3.7 inches) | 79% | very high |
| June Weather | 19°C (66°F) | 94 mm (3.7 inches) | 82% | very high |
| July Weather | 20°C (68°F) | 75 mm (3.0 inches) | 83% | very high |
| August Weather | 20°C (68°F) | 70 mm (2.7 inches) | 84% | high |
| September Weather | 15°C (60°F) | 56 mm (2.2 inches) | 85% | high |
| October Weather | 11°C (52°F) | 71 mm (2.8 inches) | 88% | moderate |
| November Weather | 6°C (42°F) | 55 mm (2.2 inches) | 89% | low |
| December Weather | 3°C (38°F) | 123 mm (4.8 inches) | 91% | low |