September weather forecastRiedau, Austria
September
Weather in September
September, the first month of the autumn in Riedau, is still a refreshing month, with an average temperature fluctuating between 18.4°C (65.1°F) and 8.6°C (47.5°F).Temperature
Riedau's September weather comes with a decrease in average high-temperatures, moving from a moderately hot 23.4°C (74.1°F) in August to a comfortable 18.4°C (65.1°F). Riedau experiences an average temperature drop to a chilly 8.6°C (47.5°F) during September nights.Humidity
In September, the average relative humidity is 82%.Rainfall
In Riedau, in September, it is raining for 13.8 days, with typically 61mm (2.4") of accumulated precipitation. Throughout the year, there are 178.4 rainfall days, and 822mm (32.36") of precipitation is accumulated.Snowfall
In Riedau, snow does not fall in June through September.Daylight
In Riedau, the average length of the day in September is 12h and 35min.On the first day of September, sunrise is at 06:23 and sunset at 19:46. On the last day of the month, sunrise is at 07:04 and sunset at 18:46 CEST.
Sunshine
In September, the average sunshine is 8.5h.UV index
The average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for the ordinary person.Note: The daily maximum UV index of 4 in September interprets into the following advice:
Take precautions - Protection against sunburn is recommended. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Riedau, Austria
- Average high temperature in September: 18.4°C
The warmest month (with the highest average high temperature) is August (23.4°C).
The month with the lowest average high temperature is January (1.6°C).
- Average low temperature in September: 8.6°C
The month with the highest average low temperature is August (12.3°C).
The coldest month (with the lowest average low temperature) is January (-3.6°C).
Average pressure in September
Riedau, Austria
- Average pressure in September: 1018.6mbar
The month with the highest atmospheric pressure is December (1020.2mbar).
The months with the lowest atmospheric pressure are April and May (1015.7mbar).
Average wind speed in September
Riedau, Austria
- Average wind speed in September: 7.4km/h
The windiest month (with the highest average wind speed) is March (10.8km/h).
The calmest month (with the lowest average wind speed) is August (6.9km/h).
Average humidity in September
Riedau, Austria
- Average humidity in September: 82%
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is April (75%).
Average rainfall in September
Riedau, Austria
- Average rainfall in September: 61mm
The wettest month (with the highest rainfall) is July (97mm).
The driest month (with the least rainfall) is April (33mm).
Average rainfall days in September
Riedau, Austria
- Average rainfall days in September: 13.8 days
The month with the highest number of rainy days is May (20.8 days).
The month with the least rainy days is February (10.4 days).
Average snowfall in September
Riedau, Austria
- Average snowfall in September: 0mm
The month with the highest snowfall is January (255mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Riedau, Austria
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (12.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Riedau, Austria
- Average daylight in September: 12h and 36min
The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 24min).
- Average sunshine in September: 8h and 30min
The months with the most sunshine are July and August (Average sunshine: 10h and 6min).
The month with the least sunshine is December (Average sunshine: 4h and 12min).
Average sunshine days in September
Riedau, Austria
- Average sunshine days in September: 14.2 days
The month with the most sunshine days is October (16.1 days).
The month with the least sunshine days is June (7.9 days).
Average UV index in September
Riedau, Austria
- Average UV index in September: 4
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January and November (UV index 1).
Average cloud cover in September
Riedau, Austria
- Average cloud cover in September: 39
The months with the most cloud cover are January, February and December (Cloud cover 56).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in September
Riedau, Austria
- Average visibility in September: 8km
The months with the highest visibility are March, April, May, June, July and August (9km).
The months with the lowest visibility are January and February (7km).
