September weather forecast
Frankfurt, Germany

The arrival of September signifies the onset of the Autumn season in Frankfurt. During September, daylight reduces to 12.6 hours and temperatures showcase a substantial drop from 10.5°C (50.9°F) to 20.3°C (68.5°F). Sunshine hours also decrease to 5.2 hours a day, indicating the end of long summer days. Despite the cool down from the summer heat, pleasant weather conditions still persist, making it a favourable time to explore the changing hues of the city.

Temperature

The onset of September in Frankfurt, Germany, brings a small shift in high-temperatures, falling from a moderately hot 25.1°C (77.2°F) in August to an agreeable 20.3°C (68.5°F). Frankfurt's average low-temperature during September nights is observed to be a fresh 10.5°C (50.9°F).

Rainfall

In September, the rain falls for 12 days. Throughout September, 53mm (2.09") of precipitation is accumulated. Throughout the year, there are 169 rainfall days, and 629mm (24.76") of precipitation is accumulated.

Daylight

In Frankfurt, the average length of the day in September is 12h and 37min.
On the first day of September, sunrise is at 06:40 and sunset at 20:09. On the last day of the month, sunrise is at 07:24 and sunset at 19:05 CEST.

Sunshine

In September, the average sunshine is 5.2h.

UV index

In Frankfurt, the average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for average individuals.
Note: In September, the UV index of 4 transforms into the following advice:
Adopt protective measures - Suggestions to resist sunburn are offered. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear.