September weather forecast
Affeltrangen, Switzerland

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September

Weather in September

The first month of the autumn, September, is also an enjoyable month in Affeltrangen, Switzerland, with an average temperature fluctuating between 17.9°C (64.2°F) and 7.4°C (45.3°F).

Temperature

The advent of September brings a subtle shift in temperature, with the average high moving from an agreeable 22.5°C (72.5°F) in August to a comfortable 17.9°C (64.2°F). Affeltrangen records an average low of 7.4°C (45.3°F) throughout the nights in September.

Humidity

In Affeltrangen, the average relative humidity in September is 82%.

Rainfall

In Affeltrangen, during September, the rain falls for 12.7 days and regularly aggregates up to 35mm (1.38") of precipitation. Throughout the year, there are 151 rainfall days, and 623mm (24.53") of precipitation is accumulated.

Snowfall

In Affeltrangen, snow does not fall in June through September.

Daylight

In Affeltrangen, the average length of the day in September is 12h and 34min.
On the first day of the month, sunrise is at 06:43 and sunset at 20:04. On the last day of September, in Affeltrangen, sunrise is at 07:22 and sunset at 19:05 CEST.

Sunshine

In September, the average sunshine in Affeltrangen, Switzerland, is 8.7h.

UV index

In Affeltrangen, the average daily maximum UV index in September is 3. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for ordinary individuals.
Note: The UV index of 3 during September leads to these advisories:
Take precautions - Protection against sun damage is advised. Minimize direct exposure to the Sun during midday when its radiation is at its peak. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.
Updated: Feb 4, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the usual temperature for Affeltrangen in September?
In Affeltrangen, 17.9°C (64.2°F) is the average high-temperature and 7.4°C (45.3°F) is the average low-temperature during September.
What is the average humidity in September in Affeltrangen?
The average relative humidity in September in Affeltrangen, Switzerland, is 82%.
How many days does it rain in September in Affeltrangen?
In September, in Affeltrangen, Switzerland, the rain falls for 12.7 days. Throughout September, 35mm (1.38") of precipitation is accumulated.
When it does not snow in Affeltrangen?
June through September are months without snowfall.
Does it snow in Affeltrangen in September?
In Affeltrangen, in September, it doesn't snow. In October, it regularly snows.
How many hours of daylight does Affeltrangen have in September?
The average day length in September is 12h and 34min.
When is the sunrise / sunset in September in Affeltrangen?
On the first day of September in Affeltrangen, sunrise is at 06:43 and sunset at 20:04. On the last day of the month, sunrise is at 07:22 and sunset at 19:05 CEST.
How many hours of sunshine does Affeltrangen have in September?
In Affeltrangen, the average sunshine duration in September is 8.7h.
How high is the UV index in September in Affeltrangen?
In Affeltrangen, the average daily maximum UV index in September is 3. A UV Index value of 3 to 5 symbolizes a moderate health threat from unprotected exposure to UV radiation.
Today
Tomorrow
Long-term
YearJFMAMJJASeptemberOND
Aug
September
Oct
Average high temperature
22.5°C
17.9°C
13.3°C
Average low temperature
11.1°C
7.4°C
4°C
Average pressure
1017.8mbar
1018.6mbar
1018.6mbar
Average wind speed
5.9km/h
6.1km/h
6.4km/h
Average max. wind speed
6.5km/h
6.4km/h
6.9km/h
Average wind speed gusts
9.5km/h
9.9km/h
10.8km/h
Average humidity
79%
82%
83%
Average rainfall
80mm
35mm
47mm
Average rainfall days
18
12.7
10.4
Average snowfall
0mm
0mm
13mm
Average snowfall days
0
0
1.1
Average daylight
14h 1min
12h 4min
10h 5min
Average sunshine
9h 5min
8h 4min
6h 0min
Average sunshine days
9.9
14.5
18.5
Average UV index
4
3
2
Average cloud cover
34%
39%
41%
Average visibility
8km
8km
8km
Average temperature in September
Affeltrangen, Switzerland
  • Average high temperature in September: 17.9°C

The warmest months (with the highest average high temperature) are July and August (22.5°C).
The month with the lowest average high temperature is January (2.2°C).

  • Average low temperature in September: 7.4°C

The month with the highest average low temperature is August (11.1°C).
The coldest months (with the lowest average low temperature) are January and February (-4.3°C).

Average pressure in September
Affeltrangen, Switzerland
  • Average pressure in September: 1018.6mbar

The month with the highest atmospheric pressure is December (1020.8mbar).
The month with the lowest atmospheric pressure is April (1015.6mbar).

Average wind speed in September
Affeltrangen, Switzerland
  • Average wind speed in September: 6.1km/h

The windiest month (with the highest average wind speed) is March (8km/h).
The calmest month (with the lowest average wind speed) is August (5.9km/h).

Average humidity in September
Affeltrangen, Switzerland
  • Average humidity in September: 82%

The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is July (78%).

Average rainfall in September
Affeltrangen, Switzerland
  • Average rainfall in September: 35mm

The wettest month (with the highest rainfall) is May (82mm).
The driest month (with the least rainfall) is November (31mm).

Average rainfall days in September
Affeltrangen, Switzerland
  • Average rainfall days in September: 12.7 days

The month with the highest number of rainy days is May (18.7 days).
The month with the least rainy days is February (6.9 days).

Average snowfall in September
Affeltrangen, Switzerland
  • Average snowfall in September: 0mm

The month with the highest snowfall is January (202mm).
The months with the least snowfall are June, July, August and September (0mm).

Average snowfall days in September
Affeltrangen, Switzerland
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (12.3 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in September /
Average sunshine in September
Affeltrangen, Switzerland
  • Average daylight in September: 12h and 4min

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 4min

The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).

Average sunshine days in September
Affeltrangen, Switzerland
  • Average sunshine days in September: 14.5 days

The month with the most sunshine days is October (18.5 days).
The month with the least sunshine days is July (9.8 days).

Average UV index in September
Affeltrangen, Switzerland
  • Average UV index in September: 3

The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are November and December (UV index 1).

Average cloud cover in September
Affeltrangen, Switzerland
  • Average cloud cover in September: 39

The month with the most cloud cover is February (Cloud cover 55).
The month with the least cloud cover is August (Cloud cover 34).

Average visibility in September
Affeltrangen, Switzerland
  • Average visibility in September: 8km

The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (8km).
The months with the lowest visibility are January and February (7km).

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