September weather forecastAltach, Austria
September
Weather in September
The first month of the autumn, September, is still a comfortable month in Altach, Austria, with an average temperature ranging between min 6.8°C (44.2°F) and max 17.5°C (63.5°F).Temperature
In Altach, entering September brings a subtle temperature decrement, reducing from August's agreeable 21.9°C (71.4°F) to an enjoyable 17.5°C (63.5°F). An average temperature of 6.8°C (44.2°F) is recorded during the nights in September.Humidity
The average relative humidity in September in Altach is 79%.Rainfall
In September, in Altach, Austria, the rain falls for 13.7 days. Throughout September, 54mm (2.13") of precipitation is accumulated. In Altach, during the entire year, the rain falls for 181.9 days and collects up to 949mm (37.36") of precipitation.Snowfall
In Altach, snow does not fall in June through September.Daylight
In Altach, the average length of the day in September is 12h and 34min.On the first day of the month, sunrise is at 06:41 and sunset at 20:01. On the last day of September, sunrise is at 07:19 and sunset at 19:02 CEST.
Sunshine
The average sunshine in September is 9.4h.UV index
In September, the average daily maximum UV index in Altach is 3. A UV Index value of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for the average person.Note: An average UV index of 3 in September transforms into this advice:
Take necessary precautions - Suggestions to elude sunburn are provided. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Altach, Austria
- Average high temperature in September: 17.5°C
The warmest month (with the highest average high temperature) is August (21.9°C).
The month with the lowest average high temperature is January (1.8°C).
- Average low temperature in September: 6.8°C
The month with the highest average low temperature is July (10.1°C).
The coldest month (with the lowest average low temperature) is February (-6°C).
Average pressure in September
Altach, Austria
- Average pressure in September: 1018.5mbar
The month with the highest atmospheric pressure is December (1020.8mbar).
The month with the lowest atmospheric pressure is April (1015.6mbar).
Average wind speed in September
Altach, Austria
- Average wind speed in September: 6.4km/h
The windiest month (with the highest average wind speed) is December (7.9km/h).
The calmest months (with the lowest average wind speed) are August and September (6.4km/h).
Average humidity in September
Altach, Austria
- Average humidity in September: 79%
The months with the highest relative humidity are January and February (86%).
The months with the lowest relative humidity are July and August (76%).
Average rainfall in September
Altach, Austria
- Average rainfall in September: 54mm
The wettest month (with the highest rainfall) is August (116mm).
The driest month (with the least rainfall) is April (51mm).
Average rainfall days in September
Altach, Austria
- Average rainfall days in September: 13.7 days
The month with the highest number of rainy days is May (20.5 days).
The month with the least rainy days is February (10.4 days).
Average snowfall in September
Altach, Austria
- Average snowfall in September: 0mm
The month with the highest snowfall is January (214mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Altach, Austria
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (9.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Altach, Austria
- Average daylight in September: 12h and 36min
The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).
- Average sunshine in September: 9h and 24min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is December (Average sunshine: 5h and 24min).
Average sunshine days in September
Altach, Austria
- Average sunshine days in September: 13.3 days
The month with the most sunshine days is October (17.5 days).
The month with the least sunshine days is July (7.3 days).
Average UV index in September
Altach, Austria
- Average UV index in September: 3
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in September
Altach, Austria
- Average cloud cover in September: 34
The months with the most cloud cover are January and February (Cloud cover 44).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in September
Altach, Austria
- Average visibility in September: 8km
The months with the highest visibility are April, May, June, July, August and November (9km).
The month with the lowest visibility is January (7km).
