Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
September
Weather in September
Temperature
As August makes way for September, Altheim's average high-temperature eases from a warm 23.2°C (73.8°F) to a comfortable 18.3°C (64.9°F). Throughout September, Altheim encounters an average temperature drop to a chilly 8.3°C (46.9°F).Humidity
In Altheim, the average relative humidity in September is 84%.Rainfall
In Altheim, during September, the rain falls for 16 days and regularly aggregates up to 83mm (3.27") of precipitation. Throughout the year, there are 186.2 rainfall days, and 1040mm (40.94") of precipitation is accumulated.Snowfall
In Altheim, snow does not fall in June through September.Daylight
In September, the average length of the day is 12h and 35min.On the first day of the month, sunrise is at 06:25 and sunset at 19:48. On the last day of September, in Altheim, sunrise is at 07:05 and sunset at 18:48 CEST.
Sunshine
The average sunshine in September in Altheim is 7.9h.UV index
In Altheim, Austria, the average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for the ordinary person.Note: In September, a regular UV index of 4 translates into these guidelines:
Stay alert. Light-skinned people could suffer burns in less than 30 minutes. The solar radiation around mid-day is intense; avoid the Sun and stay safe. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September in Altheim?
What is the average humidity in September in Altheim?
How many days does it rain in September in Altheim?
When it does not snow in Altheim?
Does it snow in Altheim in September?
How many hours of daylight does Altheim have in September?
When is the sunrise / sunset in September in Altheim?
How long on average sun shines in September in Altheim?
How high is the UV index in September in Altheim?
Average temperature in September
Altheim, Austria
- Average high temperature in September: 18.3°C
The warmest months (with the highest average high temperature) are July and August (23.2°C).
The month with the lowest average high temperature is January (2.1°C).
- Average low temperature in September: 8.3°C
The month with the highest average low temperature is August (12.3°C).
The coldest months (with the lowest average low temperature) are January and February (-3.8°C).
Average pressure in September
Altheim, Austria
- Average pressure in September: 1018.6mbar
The month with the highest atmospheric pressure is December (1020.4mbar).
The months with the lowest atmospheric pressure are April and May (1015.7mbar).
Average wind speed in September
Altheim, Austria
- Average wind speed in September: 6.9km/h
The windiest month (with the highest average wind speed) is March (9.8km/h).
The calmest month (with the lowest average wind speed) is August (6.8km/h).
Average humidity in September
Altheim, Austria
- Average humidity in September: 84%
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is April (77%).
Average rainfall in September
Altheim, Austria
- Average rainfall in September: 83mm
The wettest month (with the highest rainfall) is May (125mm).
The driest month (with the least rainfall) is November (40mm).
Average rainfall days in September
Altheim, Austria
- Average rainfall days in September: 16 days
The month with the highest number of rainy days is May (23.2 days).
The month with the least rainy days is February (8.7 days).
Average snowfall in September
Altheim, Austria
- Average snowfall in September: 0mm
The month with the highest snowfall is January (409mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Altheim, Austria
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (13 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Altheim, Austria
- Average daylight in September: 12h and 4min
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: 7h and 5min
The month with the most sunshine is August (Average sunshine: 9h and 48min).
The month with the least sunshine is February (Average sunshine: 3h and 48min).
Average sunshine days in September
Altheim, Austria
- Average sunshine days in September: 11.3 days
The month with the most sunshine days is November (15.9 days).
The month with the least sunshine days is June (4.9 days).
Average UV index in September
Altheim, Austria
- Average UV index in September: 4
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, October, November and December (UV index 2).
Average cloud cover in September
Altheim, Austria
- Average cloud cover in September: 43
The month with the most cloud cover is February (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 35).
Average visibility in September
Altheim, Austria
- Average visibility in September: 8km
The months with the highest visibility are April, June and July (9km).
The months with the lowest visibility are January and February (7km).
