Last updated: August 23, 2025
In Hamm, Germany, the average temperature in September hovers around 15°C (60°F), offering a comfortable climate for various activities. However, be prepared for a range, with minimums dipping to 2°C (36°F) and soaring highs of 32°C (89°F). Expect around 57 mm (2.3 in) of precipitation over approximately 10 days, and note that the average humidity is a humid 82%. Whether you're exploring the outdoors or enjoying indoor attractions, pack accordingly for a delightful experience!
In September in Hamm, the average temperature is 15°C (60°F). The maximum can reach 32°C (89°F) and the minimum can be as low as 2°C (36°F). This makes it a great time for travelers to experience a comfortable climate, perfect for exploring outdoor activities and enjoying local attractions.
In Hamm in September, the precipitation amount is 57 mm (2.3 in) over the course of 10 days.
In Hamm in September humidity is 82%. With an average temperature of 15°C (60°F), this humidity feels like a heavy blanket wrapping around you, making outdoor activities feel sticky and draining, which can hinder your travel experience.
In Hamm 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 Hamm.
UV Risk Categories
Weather in Hamm varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Hamm, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 3°C (38°F) | 69 mm (2.7 inches) | 92% | low |
| February Weather | 4°C (40°F) | 76 mm (3.0 inches) | 90% | low |
| March Weather | 7°C (44°F) | 74 mm (2.9 inches) | 87% | moderate |
| April Weather | 10°C (50°F) | 38 mm (1.5 inches) | 83% | moderate |
| May Weather | 14°C (57°F) | 59 mm (2.3 inches) | 76% | high |
| June Weather | 19°C (66°F) | 58 mm (2.3 inches) | 74% | very high |
| July Weather | 19°C (67°F) | 78 mm (3.1 inches) | 74% | very high |
| August Weather | 19°C (67°F) | 70 mm (2.7 inches) | 75% | high |
| September Weather | 15°C (60°F) | 57 mm (2.3 inches) | 82% | moderate |
| October Weather | 12°C (54°F) | 82 mm (3.2 inches) | 88% | moderate |
| November Weather | 7°C (45°F) | 54 mm (2.1 inches) | 90% | low |
| December Weather | 5°C (41°F) | 90 mm (3.5 inches) | 92% | low |