Last updated: August 23, 2025
In September, the average temperature in Helmstorf, Germany hovers around 15°C (59°F), bringing a pleasant climate for visitors. Temperatures can vary significantly, ranging from a cool 6°C (44°F) to a warm 27°C (81°F). During this month, expect approximately 59 mm (2.3 in) of precipitation over about 12 days, contributing to an average humidity of 83%. Embrace the beauty of the season while staying prepared for the occasional rain!
In September in Helmstorf, the average temperature is 15°C (59°F). Maximums can reach 27°C (81°F), and minimums can be as low as 6°C (44°F). Travelers can expect mild weather ideal for outdoor activities, with warm days and cooler evenings.
In Helmstorf in September, the precipitation amount is 59 mm (2.3 in) occurring over the course of 12 days.
In Helmstorf 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 Helmstorf 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 Helmstorf.
UV Risk Categories
Weather in Helmstorf varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Helmstorf, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 3°C (38°F) | 67 mm (2.6 inches) | 90% | low |
| February Weather | 3°C (38°F) | 59 mm (2.3 inches) | 89% | low |
| March Weather | 4°C (40°F) | 68 mm (2.7 inches) | 88% | moderate |
| April Weather | 8°C (46°F) | 43 mm (1.7 inches) | 85% | moderate |
| May Weather | 12°C (54°F) | 68 mm (2.7 inches) | 80% | high |
| June Weather | 17°C (63°F) | 62 mm (2.4 inches) | 77% | very high |
| July Weather | 18°C (64°F) | 82 mm (3.2 inches) | 77% | high |
| August Weather | 18°C (65°F) | 81 mm (3.2 inches) | 77% | high |
| September Weather | 15°C (59°F) | 59 mm (2.3 inches) | 83% | moderate |
| October Weather | 11°C (53°F) | 90 mm (3.6 inches) | 87% | moderate |
| November Weather | 7°C (45°F) | 55 mm (2.2 inches) | 89% | low |
| December Weather | 4°C (40°F) | 74 mm (2.9 inches) | 88% | low |