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
Weather in September
Temperature
The arrival of September corresponds with a light shift in temperature, down from an agreeable 22.8°C (73°F) in August to a refreshing 18.5°C (65.3°F). During September, Welle observes a consistent average nighttime temperature of 10.8°C (51.4°F).Humidity
In Welle, the average relative humidity in September is 81%.Rainfall
In Welle, in September, it is raining for 14.2 days, with typically 28mm (1.1") of accumulated precipitation. In Welle, during the entire year, the rain falls for 182 days and collects up to 436mm (17.17") of precipitation.Snowfall
In Welle, snow does not fall in May through October.Daylight
In September, the average length of the day in Welle is 12h and 41min.On the first day of the month, sunrise is at 06:31 and sunset at 20:09. On the last day of September, sunrise is at 07:21 and sunset at 18:59 CEST.
Sunshine
In Welle, the average sunshine in September is 7.8h.UV index
In September, the average daily maximum UV index in Welle is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for average individuals.Note: A typical high UV index of 4 in September suggests the following recommendations:
Be vigilant - Preventing sunburn is recommended. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage.
Frequently asked questions
What are September temperatures in Welle?
What is the average humidity in September in Welle?
How many days does it rain in September in Welle?
When it does not snow in Welle?
What is the average length of the day in September in Welle?
What time are sunrise and sunset in September in Welle?
How long on average sun shines in September in Welle?
What is the UV index reading in September in Welle?
Average temperature in September
Welle, Germany
- Average high temperature in September: 18.5°C
The warmest month (with the highest average high temperature) is August (22.8°C).
The month with the lowest average high temperature is January (2.8°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 (-0.6°C).
Average pressure in September
Welle, Germany
- Average pressure in September: 1016.5mbar
The month with the highest atmospheric pressure is September (1016.5mbar).
The month with the lowest atmospheric pressure is November (1012mbar).
Average wind speed in September
Welle, Germany
- Average wind speed in September: 12.1km/h
The windiest month (with the highest average wind speed) is December (17.3km/h).
The calmest month (with the lowest average wind speed) is August (11.5km/h).
Average humidity in September
Welle, Germany
- Average humidity in September: 81%
The months with the highest relative humidity are January and December (89%).
The month with the lowest relative humidity is April (75%).
Average rainfall in September
Welle, Germany
- Average rainfall in September: 28mm
The wettest months (with the highest rainfall) are June and July (51mm).
The driest month (with the least rainfall) is April (20mm).
Average rainfall days in September
Welle, Germany
- Average rainfall days in September: 14.2 days
The month with the highest number of rainy days is July (19.8 days).
The month with the least rainy days is February (11.5 days).
Average snowfall in September
Welle, Germany
- Average snowfall in September: 0mm
The month with the highest snowfall is January (49mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Welle, Germany
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (7.3 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
Welle, Germany
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 16h and 54min).
The month with the shortest days is December (Average daylight: 7h and 36min).
- Average sunshine in September: 7h and 5min
The month with the most sunshine is August (Average sunshine: 9h and 18min).
The month with the least sunshine is December (Average sunshine: 3h and 6min).
Average sunshine days in September
Welle, Germany
- Average sunshine days in September: 12.7 days
The month with the most sunshine days is October (14.4 days).
The month with the least sunshine days is June (8.9 days).
Average UV index in September
Welle, 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
Welle, Germany
- Average cloud cover in September: 47
The month with the most cloud cover is December (Cloud cover 71).
The month with the least cloud cover is August (Cloud cover 40).
Average visibility in September
Welle, Germany
- Average visibility in September: 9km
The months with the highest visibility are February, March, April, May, June, July, August and September (9km).
The months with the lowest visibility are January, October, November and December (8km).
Welle, Germany
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