September weather forecastGrafenstein, Austria

September

Weather in September

The first month of the autumn, September, is still a comfortable month in Grafenstein, Austria, with an average temperature varying between 17.5°C (63.5°F) and 7.1°C (44.8°F).

Temperature

The shift from August to September involves a decrease in the average high-temperature, from a warm 23.1°C (73.6°F) to a refreshing 17.5°C (63.5°F). September nights in Grafenstein are marked by an average temperature drop to a chilly 7.1°C (44.8°F).

Humidity

The average relative humidity in September in Grafenstein is 83%.

Rainfall

In Grafenstein, Austria, in September, during 12.5 rainfall days, 57mm (2.24") of precipitation is typically accumulated. In Grafenstein, during the entire year, the rain falls for 152.4 days and collects up to 608mm (23.94") of precipitation.

Snowfall

In Grafenstein, snow does not fall in May through September.

Daylight

In September, the average length of the day is 12h and 33min.
On the first day of September, sunrise is at 06:22 and sunset at 19:41. On the last day of the month, sunrise is at 07:00 and sunset at 18:43 CEST.

Sunshine

In September, the average sunshine is 8.9h.

UV index

In September, the average daily maximum UV index is 3. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for ordinary individuals.
Note: The UV index of 3 in September translates into these instructions:
Guard yourself - Avoiding sunburn is suggested. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.

Updated: Jul 1, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

In September, the average high-temperature and low-temperature are 17.5°C (63.5°F) and 7.1°C (44.8°F) respectively.

In September, the average relative humidity is 83%.

In Grafenstein, in September, during 12.5 rainfall days, 57mm (2.24") of precipitation is typically accumulated.

May through September are months without snowfall.

In Grafenstein, Austria, in September, it doesn't snow. In October, it regularly snows.

The average day length in September is 12h and 33min.

On the first day of September, sunrise is at 06:22 and sunset at 19:41. On the last day of the month, sunrise is at 07:00 and sunset at 18:43 CEST.

The average sunshine duration in September is 8.9h.

The average daily maximum UV index in September in Grafenstein is 3. A UV Index reading of 3 to 5 represents a moderate vulnerability from exposure to Sun's UV rays.

Today

Tomorrow

Long-term

Year J F M A M J J A September O N D

Aug

September

Oct

Average high temperature

23.1°C

17.5°C

12.8°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

5.3km/h

5.4km/h

6km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

Average daylight

Average sunshine

Average sunshine days

13.8

15.1

16.8

Average UV index

Average cloud cover

Average visibility

Average temperature in September
Grafenstein, Austria

Average high temperature in September: 17.5°C

The warmest month (with the highest average high temperature) is July (23.4°C).
The month with the lowest average high temperature is January (0.7°C).

Average low temperature in September: 7.1°C

The month with the highest average low temperature is August (10.3°C).
The coldest month (with the lowest average low temperature) is January (-6.2°C).

Average pressure in September
Grafenstein, Austria

Average pressure in September: 1018.1mbar

The month with the highest atmospheric pressure is December (1020.4mbar).
The month with the lowest atmospheric pressure is May (1015.2mbar).

Average wind speed in September
Grafenstein, Austria

Average wind speed in September: 5.2km/h

The windiest month (with the highest average wind speed) is March (6.3km/h).
The calmest month (with the lowest average wind speed) is August (4.9km/h).

Average humidity in September
Grafenstein, Austria

Average humidity in September: 83%

The month with the highest relative humidity is February (89%).
The month with the lowest relative humidity is April (76%).

Average rainfall in September
Grafenstein, Austria

Average rainfall in September: 57mm

The wettest month (with the highest rainfall) is May (69mm).
The driest month (with the least rainfall) is January (26mm).

Average rainfall days in September
Grafenstein, Austria

Average rainfall days in September: 12.5 days

The month with the highest number of rainy days is May (18.4 days).
The month with the least rainy days is January (7.3 days).

Average snowfall in September
Grafenstein, Austria

Average snowfall in September: 0mm

The month with the highest snowfall is February (160mm).
The months with the least snowfall are May, June, July, August and September (0mm).

Average snowfall days in September
Grafenstein, Austria

Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (9 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight in September /
Average sunshine in September
Grafenstein, Austria

Average daylight in September: 12h and 36min

The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 36min).

Average sunshine in September: 8h and 54min

The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).