September weather forecast and climate
Frankfurt, Germany

Spring in the old town of Frankfurt, Germany, with the view of Justitia statue
Spring in the old town of Frankfurt, Germany, with the view of Justitia statue
September, the first month of the autumn, in Frankfurt, is also an agreeable month, with average temperature fluctuating between 20.3°C (68.5°F) and 10.5°C (50.9°F).

Temperature

In Frankfurt, the average high-temperature marginally drops, from a warm 25.1°C (77.2°F) in August, to an agreeable 20.3°C (68.5°F). In September, in Frankfurt, the average low-temperature is 10.5°C (50.9°F).

Rainfall

In Frankfurt, during September, the rain falls for 12 days and regularly aggregates up to 53mm (2.09") of precipitation. Throughout the year, there are 169 rainfall days, and 629.3mm (24.78") of precipitation is accumulated.

Daylight

In Frankfurt, Germany, the average length of the day in September is 12.6h.

Sunshine

The average sunshine is 5.2h.

UV index

The average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from the exposure to the Sun's UV radiation for the ordinary person.
Note: The daily maximum UV index of 4 in September interpret into the following advice:
Take precautions - Protection against sun damage is advised. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.

What is the temperature in September in Frankfurt?

In Frankfurt, in September, the average high-temperature is 20.3°C (68.5°F), and the average low-temperature is 10.5°C (50.9°F).

How many days does it rain in September in Frankfurt?

In Frankfurt, during September, the rain falls for 12 days and regularly aggregates up to 53mm (2.09") of precipitation.

How many hours of daylight does Frankfurt have in September?

The average length of the day in September is 12.6h.

How many hours of sunshine does Frankfurt have in September?

The average sunshine in September is 5.2h.

What is the UV index reading in September in Frankfurt?

In Frankfurt, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate vulnerability from the exposure to the Sun's UV rays.
Average temperature in September - Frankfurt, Germany
  • Average high temperature in September: 20.3°C

The warmest month (with the highest average high temperature) is July (25.5°C).
The month with the lowest average high temperature is January (4.2°C).

  • Average low temperature in September: 10.5°C

The month with the highest average low temperature is July (14.4°C).
The coldest months (with the lowest average low temperature) are January and February (-1.1°C).

Average rainfall in September - Frankfurt, Germany
  • Average rainfall in September: 53mm

The wettest month (with the highest rainfall) is July (64.7mm).
The driest month (with the least rainfall) is February (40.9mm).

Average rainfall days in September - Frankfurt, Germany
  • Average rainfall days in September: 12 days

Months with the highest number of rainy days are January and December (16 days).
Months with the least rainy days are September and October (12 days).

Average daylight in September / Average sunshine in September - Frankfurt, Germany
  • Average daylight in September: 12.6h

The month with the longest days is June (Average daylight: 16.3h).
The month with the shortest days is December (Average daylight: 8.2h).

  • Average sunshine in September: 5.2h

The month with the most sunshine is July (Average sunshine: 7.5h).
The month with the least sunshine is December (Average sunshine: 1.3h).

Average UV index in September - Frankfurt, Germany
  • Average UV index in September: 4

The month with the highest UV index is June (UV index 7).
Months with the lowest UV index are January, February, November and December (UV index 1).