September weather forecast
Koppigen, Switzerland

englishespañol中文
Share

Weather in September

The first month of the autumn, September, is still a comfortable month in Koppigen, Switzerland, with an average temperature fluctuating between 8.2°C (46.8°F) and 18.8°C (65.8°F).

Temperature

With the arrival of September, Koppigen notices a mild change in the average high-temperature, sliding from August's warm 23.3°C (73.9°F) to a comfortable 18.8°C (65.8°F). Koppigen observes an average low-temperature of 8.2°C (46.8°F) during September.

Humidity

In September, the average relative humidity in Koppigen is 81%.

Rainfall

September is the month with the least rainfall. Rain falls for 14.5 days and accumulates 45mm (1.77") of precipitation.

Snowfall

June through September are months without snowfall in Koppigen.

Daylight

In Koppigen, the average length of the day in September is 12h and 34min.
On the first day of September, sunrise is at 06:49 and sunset at 20:09. On the last day of the month, sunrise is at 07:27 and sunset at 19:11 CEST.

Sunshine

In September, the average sunshine in Koppigen is 8.9h.

UV index

The average daily maximum UV index in September in Koppigen is 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for average individuals.
Note: The maximum UV index, 4 during September, leads to the following recommendations:
Be vigilant - Preventing sunburn is recommended. Minimize direct exposure to the Sun during midday when its radiation is at its peak. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.
[Resources]

Frequently asked questions

What are September temperatures in Koppigen?

The average high-temperature and low-temperature during September are 18.8°C (65.8°F) and 8.2°C (46.8°F) respectively.

What is the average humidity in September in Koppigen?

In Koppigen, the average relative humidity in September is 81%.

What is the driest month in Koppigen?

The month with the least rainfall is September, when the rain falls for 14.5 days and typically collects 45mm (1.77") of precipitation.

How many days does it rain in September in Koppigen?

In Koppigen, Switzerland, during September, the rain falls for 14.5 days and regularly aggregates up to 45mm (1.77") of precipitation.

When it does not snow in Koppigen?

In Koppigen, Switzerland, snow does not fall in June through September.

Does it snow in Koppigen in September?

In Koppigen, in September, it doesn't snow. In October, it regularly snows.

What is the average length of the day in September in Koppigen?

In Koppigen, Switzerland, the average day length in September is 12h and 34min.

When is the sunrise / sunset in September in Koppigen?

In September, on the first day of the month, sunrise is at 06:49 and sunset at 20:09. On the last day of the month, sunrise is at 07:27 and sunset at 19:11 CEST.

How many hours of sunshine does Koppigen have in September?

In Koppigen, the average sunshine duration in September is 8.9h.

What is the UV index reading in September in Koppigen?

The average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate vulnerability from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Koppigen, Switzerland

Average temperature in September - Koppigen, Switzerland
  • Average high temperature in September: 18.8°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 (2.9°C).

  • Average low temperature in September: 8.2°C

The months with the highest average low temperature are July and August (11.8°C).
The coldest month (with the lowest average low temperature) is February (-3.4°C).

[Resources]

Average pressure in September
Koppigen, Switzerland

Average pressure in September - Koppigen, Switzerland
  • Average pressure in September: 1018.6mbar

The month with the highest atmospheric pressure is December (1020.9mbar).
The month with the lowest atmospheric pressure is April (1015.6mbar).

[Resources]

Average wind speed in September
Koppigen, Switzerland

Average wind speed in September - Koppigen, Switzerland
  • Average wind speed in September: 6.4km/h

The windiest month (with the highest average wind speed) is March (8.8km/h).
The calmest month (with the lowest average wind speed) is August (5.9km/h).

[Resources]

Average humidity in September
Koppigen, Switzerland

Average humidity in September - Koppigen, Switzerland
  • Average humidity in September: 81%

The month with the highest relative humidity is January (88%).
The months with the lowest relative humidity are April and July (78%).

[Resources]

Average rainfall in September
Koppigen, Switzerland

Average rainfall in September - Koppigen, Switzerland
  • Average rainfall in September: 45mm

The wettest month (with the highest rainfall) is May (106mm).
The driest month (with the least rainfall) is September (45mm).

[Resources]

Average rainfall days in September
Koppigen, Switzerland

Average rainfall days in September - Koppigen, Switzerland
  • Average rainfall days in September: 14.5 days

The month with the highest number of rainy days is May (22.4 days).
The month with the least rainy days is February (10.6 days).

[Resources]

Average snowfall in September
Koppigen, Switzerland

Average snowfall in September - Koppigen, Switzerland
  • Average snowfall in September: 0mm

The month with the highest snowfall is February (153mm).
The months with the least snowfall are June, July, August and September (0mm).

[Resources]

Average snowfall days in September
Koppigen, Switzerland

Average snowfall days in September - Koppigen, Switzerland
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (9.7 days).
The months with the least snowfall days are June, July, August and September (0 days).

[Resources]

Average daylight in September /
Average sunshine in September
Koppigen, Switzerland

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

The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 36min).

  • Average sunshine in September: 8h and 5min

The month with the most sunshine is August (Average sunshine: 10h and 24min).
The month with the least sunshine is December (Average sunshine: 5h and 0min).

[Resources]

Average sunshine days in September
Koppigen, Switzerland

Average sunshine days in September - Koppigen, Switzerland
  • Average sunshine days in September: 12.2 days

The month with the most sunshine days is October (15 days).
The month with the least sunshine days is May (6.6 days).

[Resources]

Average UV index in September
Koppigen, Switzerland

Average UV index in September - Koppigen, Switzerland
  • 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, October, November and December (UV index 2).

[Resources]

Average cloud cover in September
Koppigen, Switzerland

Average cloud cover in September - Koppigen, Switzerland
  • Average cloud cover in September: 34

The month with the most cloud cover is January (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 32).

[Resources]

Average visibility in September
Koppigen, Switzerland

Average visibility in September - Koppigen, Switzerland
  • Average visibility in September: 8km

The months with the highest visibility are March, April, July and August (9km).
The months with the lowest visibility are January, February, May, June, September, October, November and December (8km).

[Resources]

Koppigen, Switzerland

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location