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
The onset of September coincides with a reduction in the average high-temperature, falling from a pleasant 22.6°C (72.7°F) in August to a refreshing 17.5°C (63.5°F). Helfenberg, in September, observes a steady average low-temperature of 7.9°C (46.2°F).Humidity
In September, the average relative humidity is 83%.Rainfall
In September, the rain falls for 14.7 days. Throughout September, 53mm (2.09") of precipitation is accumulated. In Helfenberg, during the entire year, the rain falls for 166.4 days and collects up to 708mm (27.87") of precipitation.Snowfall
In Helfenberg, snow does not fall in June through September.Daylight
The average length of the day in September is 12h and 35min.On the first day of the month, sunrise is at 06:21 and sunset at 19:45. On the last day of September, sunrise is at 07:02 and sunset at 18:44 CEST.
Sunshine
In September, the average sunshine is 8h.UV index
In Helfenberg, the average daily maximum UV index in September is 3. A UV Index of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for the average person.Note: In September, the maximum UV index of 3 translates into these guidelines:
Preventative actions are necessary - The mandate to avoid skin and eye damage is in place. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September?
What is the average humidity in September?
How many days does it rain in September?
When it does not snow?
Does it snow in September?
What is the average length of the day in September in Helfenberg?
What time are sunrise and sunset in September?
How many hours of sunshine does Helfenberg have in September?
What is the UV index reading in September in Helfenberg?
Average temperature in September
Helfenberg, Austria
- Average high temperature in September: 17.5°C
The warmest month (with the highest average high temperature) is August (22.6°C).
The month with the lowest average high temperature is January (0.2°C).
- Average low temperature in September: 7.9°C
The month with the highest average low temperature is August (11.4°C).
The coldest month (with the lowest average low temperature) is January (-4.8°C).
Average pressure in September
Helfenberg, Austria
- Average pressure in September: 1018.5mbar
The month with the highest atmospheric pressure is December (1020mbar).
The month with the lowest atmospheric pressure is April (1015.6mbar).
Average wind speed in September
Helfenberg, Austria
- Average wind speed in September: 7.8km/h
The windiest month (with the highest average wind speed) is March (11.5km/h).
The calmest month (with the lowest average wind speed) is August (7.1km/h).
Average humidity in September
Helfenberg, Austria
- Average humidity in September: 83%
The month with the highest relative humidity is January (90%).
The month with the lowest relative humidity is April (76%).
Average rainfall in September
Helfenberg, Austria
- Average rainfall in September: 53mm
The wettest month (with the highest rainfall) is July (100mm).
The driest month (with the least rainfall) is November (26mm).
Average rainfall days in September
Helfenberg, Austria
- Average rainfall days in September: 14.7 days
The month with the highest number of rainy days is May (22.3 days).
The months with the least rainy days are January and February (7 days).
Average snowfall in September
Helfenberg, Austria
- Average snowfall in September: 0mm
The month with the highest snowfall is January (268mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Helfenberg, Austria
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (17 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Helfenberg, Austria
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 16h and 6min).
The month with the shortest days is December (Average daylight: 8h and 24min).
- Average sunshine in September: 8h and 0min
The months with the most sunshine are July and August (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in September
Helfenberg, Austria
- Average sunshine days in September: 13.1 days
The month with the most sunshine days is November (16.5 days).
The month with the least sunshine days is June (6.3 days).
Average UV index in September
Helfenberg, 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 and November (UV index 1).
Average cloud cover in September
Helfenberg, Austria
- Average cloud cover in September: 44
The month with the most cloud cover is January (Cloud cover 64).
The month with the least cloud cover is August (Cloud cover 36).
Average visibility in September
Helfenberg, Austria
- Average visibility in September: 8km
The months with the highest visibility are April, June, July and August (9km).
The months with the lowest visibility are January, February and December (7km).
