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
With the beginning of September, the average high-temperature shows a small decrease, transitioning from a warm 23.3°C (73.9°F) in August to a comfortable 19.5°C (67.1°F). In Alst, the average nighttime temperature during September is a cool 11.6°C (52.9°F).Humidity
In Alst, the average relative humidity in September is 77%.Rainfall
In September, in Alst, the rain falls for 13 days. Throughout September, 31mm (1.22") of precipitation is accumulated. In Alst, during the entire year, the rain falls for 175.6 days and collects up to 456mm (17.95") of precipitation.Snowfall
In Alst, snow does not fall in April through October.Daylight
In Alst, Germany, the average length of the day in September is 12h and 38min.On the first day of the month, sunrise is at 06:49 and sunset at 20:20. On the last day of September, in Alst, sunrise is at 07:35 and sunset at 19:14 CEST.
Sunshine
In September, the average sunshine in Alst is 8.1h.UV index
In September, the average daily maximum UV index in Alst, Germany, is 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: An average maximum UV index of 4 in September leads to these recommendations:
Stay alert. Light-skinned people could suffer burns in less than 30 minutes. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September in Alst?
What is the average humidity in September in Alst?
How much does it rain in Alst in September?
When it does not snow in Alst?
What is the average length of the day in September in Alst?
When is the sunrise / sunset in September in Alst?
How many hours of sunshine does Alst have in September?
What is the UV index reading in September in Alst?
Average temperature in September
Alst, Germany
- Average high temperature in September: 19.5°C
The warmest months (with the highest average high temperature) are July and August (23.3°C).
The month with the lowest average high temperature is January (4.8°C).
- Average low temperature in September: 11.6°C
The month with the highest average low temperature is August (14.4°C).
The coldest month (with the lowest average low temperature) is January (1°C).
Average pressure in September
Alst, Germany
- Average pressure in September: 1017.4mbar
The month with the highest atmospheric pressure is September (1017.4mbar).
The month with the lowest atmospheric pressure is November (1012.8mbar).
Average wind speed in September
Alst, Germany
- Average wind speed in September: 11.4km/h
The windiest month (with the highest average wind speed) is December (17km/h).
The calmest months (with the lowest average wind speed) are July and August (11.2km/h).
Average humidity in September
Alst, Germany
- Average humidity in September: 77%
The month with the highest relative humidity is December (87%).
The months with the lowest relative humidity are April and August (73%).
Average rainfall in September
Alst, Germany
- Average rainfall in September: 31mm
The wettest months (with the highest rainfall) are June, July and December (46mm).
The driest month (with the least rainfall) is April (24mm).
Average rainfall days in September
Alst, Germany
- Average rainfall days in September: 13 days
The month with the highest number of rainy days is July (17.7 days).
The month with the least rainy days is April (12.2 days).
Average snowfall in September
Alst, Germany
- Average snowfall in September: 0mm
The month with the highest snowfall is January (38mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Alst, Germany
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (4.4 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Alst, Germany
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 16h and 30min).
The month with the shortest days is December (Average daylight: 8h and 0min).
- Average sunshine in September: 8h and 1min
The month with the most sunshine is August (Average sunshine: 9h and 30min).
The month with the least sunshine is December (Average sunshine: 3h and 36min).
Average sunshine days in September
Alst, Germany
- Average sunshine days in September: 14.3 days
The month with the most sunshine days is October (15.1 days).
The month with the least sunshine days is June (10.3 days).
Average UV index in September
Alst, Germany
- 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, February, November and December (UV index 2).
Average cloud cover in September
Alst, Germany
- Average cloud cover in September: 41
The month with the most cloud cover is December (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 38).
Average visibility in September
Alst, Germany
- Average visibility in September: 9km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
