September weather forecastHallein, Austria
September
Weather in September
September in Hallein represents a bridge between the balmier summer days and the crisp onset of autumn. Temperatures decrease, with the average high dipping to 16.9°C (62.4°F) and the low settling at 7.1°C (44.8°F). The month is well-known for a noticeable decrease in rainfall to 58mm (2.28"). Daylight hours start to shorten and the length of sunshine hours is decreased as well. Noteworthy is the consistency of the Hallein wind, which at an average speed of 6.2km/h (3.9mph), continues to give the air a refreshing quality.Temperature
The arrival of September in Hallein corresponds with a shift in temperature, down from an agreeable 21.9°C (71.4°F) in August to a comfortable 16.9°C (62.4°F). Hallein experiences an average nighttime temperature of 7.1°C (44.8°F) in the month of September.Humidity
The average relative humidity in September is 85%.Rainfall
In Hallein, during September, the rain falls for 15.3 days and regularly aggregates up to 58mm (2.28") of precipitation. Throughout the year, in Hallein, Austria, there are 174.9 rainfall days, and 940mm (37.01") of precipitation is accumulated.Snowfall
In Hallein, snow does not fall in June through September.Daylight
In September, the average length of the day in Hallein is 12h and 34min.On the first day of September in Hallein, sunrise is at 06:26 and sunset at 19:48. On the last day of the month, sunrise is at 07:05 and sunset at 18:48 CEST.
Sunshine
The average sunshine in September in Hallein is 8.3h.UV index
The average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for average individuals.Note: A maximum high daily UV index of 4 during September translates into the following directions:
Proceed with care. Light skin individuals may be exposed to burns in fewer than 30 minutes. To protect against the Sun's most potent rays, avoid direct exposure around midday. 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
Hallein, Austria
- Average high temperature in September: 16.9°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 (1.1°C).
- Average low temperature in September: 7.1°C
The month with the highest average low temperature is August (10.8°C).
The coldest month (with the lowest average low temperature) is February (-5.6°C).
Average pressure in September
Hallein, 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
Hallein, Austria
- Average wind speed in September: 6.2km/h
The windiest month (with the highest average wind speed) is March (8.5km/h).
The calmest months (with the lowest average wind speed) are August and September (6.2km/h).
Average humidity in September
Hallein, Austria
- Average humidity in September: 85%
The month with the highest relative humidity is February (90%).
The month with the lowest relative humidity is April (79%).
Average rainfall in September
Hallein, Austria
- Average rainfall in September: 58mm
The wettest month (with the highest rainfall) is May (104mm).
The driest month (with the least rainfall) is November (30mm).
Average rainfall days in September
Hallein, Austria
- Average rainfall days in September: 15.3 days
The month with the highest number of rainy days is May (21.8 days).
The month with the least rainy days is February (7.9 days).
Average snowfall in September
Hallein, Austria
- Average snowfall in September: 0mm
The month with the highest snowfall is January (427mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Hallein, Austria
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (11.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Hallein, 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: 8h and 18min
The months with the most sunshine are July and August (Average sunshine: 9h and 48min).
The month with the least sunshine is February (Average sunshine: 4h and 0min).
Average sunshine days in September
Hallein, Austria
- Average sunshine days in September: 12.6 days
The month with the most sunshine days is November (18.1 days).
The month with the least sunshine days is May (7.7 days).
Average UV index in September
Hallein, 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, March, October, November and December (UV index 2).
Average cloud cover in September
Hallein, Austria
- Average cloud cover in September: 42
The month with the most cloud cover is February (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility in September
Hallein, Austria
- Average visibility in September: 7km
The months with the highest visibility are March, April, May, June, July, August, October, November and December (8km).
The months with the lowest visibility are January, February and September (7km).
