September weather forecastIlster, Germany
September
Weather in September
September, the first month of the autumn in Ilster, is also an enjoyable month, with an average temperature varying between 18.6°C (65.5°F) and 10.8°C (51.4°F).Temperature
The arrival of September correlates with a minor temperature reduction, down from August's warm 23°C (73.4°F) to a comfortable 18.6°C (65.5°F). Ilster cools down to an average low-temperature of 10.8°C (51.4°F) throughout the month of September.Humidity
The average relative humidity in September is 80%.Rainfall
In September, in Ilster, the rain falls for 17.2 days. Throughout September, 37mm (1.46") of precipitation is accumulated. Throughout the year, there are 193 rainfall days, and 562mm (22.13") of precipitation is accumulated.Snowfall
May through October are months without snowfall.Daylight
The average length of the day in September is 12h and 40min.On the first day of the month, sunrise is at 06:30 and sunset at 20:08. On the last day of September, sunrise is at 07:20 and sunset at 18:58 CEST.
Sunshine
In September, the average sunshine is 7.7h.UV index
In September, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for the ordinary person.Note: In September, a regular UV index of 4 translates into these guidelines:
Act with care - Obligation to protect against skin and eye damage is highlighted. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Ilster, Germany
- Average high temperature in September: 18.6°C
The warmest month (with the highest average high temperature) is August (23°C).
The month with the lowest average high temperature is January (2.9°C).
- Average low temperature in September: 10.8°C
The month with the highest average low temperature is August (13.8°C).
The coldest month (with the lowest average low temperature) is January (-0.8°C).
Average pressure in September
Ilster, Germany
- Average pressure in September: 1016.7mbar
The month with the highest atmospheric pressure is September (1016.7mbar).
The month with the lowest atmospheric pressure is November (1012.3mbar).
Average wind speed in September
Ilster, Germany
- Average wind speed in September: 12.5km/h
The windiest month (with the highest average wind speed) is December (17.5km/h).
The calmest month (with the lowest average wind speed) is August (12km/h).
Average humidity in September
Ilster, Germany
- Average humidity in September: 80%
The month with the highest relative humidity is December (90%).
The month with the lowest relative humidity is April (73%).
Average rainfall in September
Ilster, Germany
- Average rainfall in September: 37mm
The wettest month (with the highest rainfall) is July (63mm).
The driest month (with the least rainfall) is April (25mm).
Average rainfall days in September
Ilster, Germany
- Average rainfall days in September: 17.2 days
The month with the highest number of rainy days is July (20.4 days).
The month with the least rainy days is February (11.5 days).
Average snowfall in September
Ilster, Germany
- Average snowfall in September: 0mm
The month with the highest snowfall is January (52mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Ilster, Germany
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (8.5 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
Ilster, Germany
- Average daylight in September: 12h and 42min
The month with the longest days is June (Average daylight: 16h and 48min).
The month with the shortest days is December (Average daylight: 7h and 42min).
- Average sunshine in September: 7h and 42min
The month with the most sunshine is August (Average sunshine: 9h and 12min).
The month with the least sunshine is December (Average sunshine: 2h and 48min).
Average sunshine days in September
Ilster, Germany
- Average sunshine days in September: 10.5 days
The month with the most sunshine days is April (14 days).
The month with the least sunshine days is December (7.7 days).
Average UV index in September
Ilster, 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, March, November and December (UV index 2).
Average cloud cover in September
Ilster, Germany
- Average cloud cover in September: 47
The month with the most cloud cover is December (Cloud cover 72).
The month with the least cloud cover is August (Cloud cover 41).
Average visibility in September
Ilster, 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).
