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
September is marked by a subtle drop in average high-temperatures, transitioning from a moderately hot 24.4°C (75.9°F) in August to a refreshing 19.9°C (67.8°F). In the month of September, Achern's average low-temperature falls to a chilly 9.9°C (49.8°F).Humidity
In September, the average relative humidity in Achern is 77%.Rainfall
The month with the least rainfall is September, when the rain falls for 9.7 days and typically collects 22mm (0.87") of precipitation.Snowfall
May through September are months without snowfall in Achern.Daylight
The average length of the day in September is 12h and 35min.On the first day of September, sunrise is at 06:45 and sunset at 20:09. On the last day of the month, sunrise is at 07:26 and sunset at 19:08 CEST.
Sunshine
The average sunshine in September is 9h.UV index
The average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: In September, an average UV index of 4 transforms into the following instructions:
Exercise care. People with light skin might get burns in fewer than 30 minutes. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature in Achern?
What is the average humidity in September in Achern?
What is the driest month in Achern?
How many days does it rain in September in Achern?
When it does not snow in Achern?
Does it snow in Achern in September?
How many hours of daylight does Achern have in September?
When is the sunrise / sunset in September in Achern?
How long on average sun shines in September in Achern?
How high is the UV index in September in Achern?
Average temperature in September
Achern, Germany
- Average high temperature in September: 19.9°C
The warmest months (with the highest average high temperature) are July and August (24.4°C).
The month with the lowest average high temperature is January (3.8°C).
- Average low temperature in September: 9.9°C
The month with the highest average low temperature is August (13.7°C).
The coldest month (with the lowest average low temperature) is January (-1.4°C).
Average pressure in September
Achern, Germany
- Average pressure in September: 1018.4mbar
The month with the highest atmospheric pressure is December (1019.7mbar).
The month with the lowest atmospheric pressure is November (1015.2mbar).
Average wind speed in September
Achern, Germany
- Average wind speed in September: 8.1km/h
The windiest month (with the highest average wind speed) is February (11.3km/h).
The calmest month (with the lowest average wind speed) is August (7.9km/h).
Average humidity in September
Achern, Germany
- Average humidity in September: 77%
The month with the highest relative humidity is January (88%).
The months with the lowest relative humidity are July and August (72%).
Average rainfall in September
Achern, Germany
- Average rainfall in September: 22mm
The wettest month (with the highest rainfall) is December (77mm).
The driest month (with the least rainfall) is September (22mm).
Average rainfall days in September
Achern, Germany
- Average rainfall days in September: 9.7 days
The month with the highest number of rainy days is May (18 days).
The month with the least rainy days is September (9.7 days).
Average snowfall in September
Achern, Germany
- Average snowfall in September: 0mm
The month with the highest snowfall is January (97mm).
The months with the least snowfall are May, June, July, August and September (0mm).
Average snowfall days in September
Achern, Germany
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (8.9 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Achern, Germany
- 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: 9h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).
Average sunshine days in September
Achern, Germany
- Average sunshine days in September: 18.4 days
The month with the most sunshine days is September (18.4 days).
The month with the least sunshine days is January (10 days).
Average UV index in September
Achern, Germany
- 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, November and December (UV index 2).
Average cloud cover in September
Achern, Germany
- Average cloud cover in September: 34
The months with the most cloud cover are January and December (Cloud cover 57).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in September
Achern, Germany
- Average visibility in September: 9km
The months with the highest visibility are March, April, May, June, July, August and September (9km).
The months with the lowest visibility are January, February, October, November and December (8km).
