Last updated: August 23, 2025
In September, the average temperature in Stemmen, Germany hovers around 15°C (59°F), creating a pleasant atmosphere for visitors. However, temperatures can range from a cool 4°C (39°F) to a balmy 31°C (88°F). Precipitation averages 55 mm (2.2 in) over 11 days, while the average humidity sits at a comfortable 81%. Whether you’re soaking up the sun or enjoying cooler evenings, Stemmen offers a delightful experience!
In September in Stemmen, the average temperature is 15°C (59°F). Maximums can reach up to 31°C (88°F) and minimums can drop to as low as 4°C (39°F). Overall, this month offers a comfortable climate for travelers, so be sure to pack both light clothing and a warmer layer for the cooler evenings.
In Stemmen, in September, the total precipitation amount is 55 mm (2.2 in) over the course of 11 days.
In Stemmen in September humidity is 81%. With an average temperature of 15°C (59°F), this humidity feels like a heavy blanket draped over you, making traveling quite uncomfortable as you constantly wipe away beads of sweat and feel the stickiness clinging to your clothes.
In Stemmen in September, the maximum UV index reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the Hourly UV Index in Stemmen.
UV Risk Categories
Weather in Stemmen varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Stemmen, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 3°C (38°F) | 65 mm (2.6 inches) | 91% | low |
| February Weather | 4°C (39°F) | 61 mm (2.4 inches) | 89% | low |
| March Weather | 5°C (42°F) | 69 mm (2.7 inches) | 87% | moderate |
| April Weather | 9°C (48°F) | 52 mm (2.1 inches) | 82% | moderate |
| May Weather | 13°C (56°F) | 68 mm (2.7 inches) | 73% | high |
| June Weather | 18°C (65°F) | 77 mm (3.0 inches) | 66% | very high |
| July Weather | 18°C (65°F) | 84 mm (3.3 inches) | 66% | high |
| August Weather | 19°C (66°F) | 73 mm (2.9 inches) | 67% | high |
| September Weather | 15°C (59°F) | 55 mm (2.2 inches) | 81% | moderate |
| October Weather | 12°C (53°F) | 83 mm (3.3 inches) | 86% | moderate |
| November Weather | 7°C (44°F) | 51 mm (2.0 inches) | 90% | low |
| December Weather | 4°C (40°F) | 76 mm (3.0 inches) | 90% | low |