Graz
Austria
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Graz, Austria

September, the first month of the autumn, in Graz, is still a pleasant month, with temperature in the range of an average high of 20°C (68°F) and an average low of 9°C (48.2°F).

Temperature

In September, the average high-temperature marginally drops, from a moderately hot 23°C (73.4°F) in August, to an agreeable 20°C (68°F). In Graz, the average low-temperature is 9°C (48.2°F).

Rainfall

In Graz, in September, it is raining for 11 days, with typically 89mm (3.5") of accumulated precipitation. In Graz, during the entire year, the rain falls for 146 days and collects up to 968mm (38.1") of precipitation.

Daylight

In September, the average length of the day in Graz is 12.5h.

Sunshine

In Graz, the average sunshine in September is 6h.

UV index

In September, the average daily maximum UV index in Graz, Austria, is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from the exposure to the Sun's UV rays for ordinary individuals.
In September, the average maximum UV index of 5 translate into the following recommendations:
Take precautions - Protection against the skin and eye damage is obliged. 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 Graz?

In Graz, in September, the average high-temperature is 20°C (68°F), and the average low-temperature is 9°C (48.2°F).

How much does it rain in Graz in September?

In Graz, in September, during 11 rainfall days, 89mm (3.5") of precipitation is typically accumulated.

What is the average length of the day in September in Graz?

In Graz, Austria, the average length of the day in September is 12.5h.

How long on average sun shines in September in Graz?

In Graz, the average sunshine in September is 6h.

What is the UV index intensity in September in Graz?

In Graz, the average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a medium health risk from the exposure to the Sun's UV rays.
Average temperature in September - Graz, Austria
  • Average high temperature in September: 20°C

The warmest month (with the highest average high temperature) is July (24°C).
The month with the lowest average high temperature is January (0°C).

  • Average low temperature in September: 9°C

Months with the highest average low temperature are July and August (12°C).
The coldest month (with the lowest average low temperature) is January (-7°C).

Average rainfall in September - Graz, Austria
  • Average rainfall in September: 89mm

The wettest month (with the highest rainfall) is July (131mm).
The driest month (with the lowest rainfall) is January (40mm).

Average rainfall days in September - Graz, Austria
  • Average rainfall days in September: 11 days

Months with the highest number of rainy days are May and June (15 days).
The month with the lowest number of rainy days is October (9 days).

Average daylight in September / Average sunshine in September - Graz, Austria
  • Average daylight in September: 12.5h

The month with the longest days is June (Average daylight: 15.8h).
The month with shortest days is December (Average daylight: 8.6h).

  • Average sunshine in September: 6h

The month with most sunshine is July (Average sunshine: 8h).
Months with least sunshine are January and December (Average sunshine: 2).

Average UV index in September - Graz, Austria
  • Average UV index in September: 5

The month with the highest UV index is June (UV index 8).
Months with the lowest UV index are January, November and December (UV index 1).