September weather forecast
Sennwald, Switzerland

September

Weather in September

The first month of the autumn, September, is still a refreshing month in Sennwald, Switzerland, with temperature in the range of an average low of 6.8°C (44.2°F) and an average high of 17.5°C (63.5°F).

Temperature

The commencement of September indicates a gentle shift in the average high-temperature, receding from August's agreeable 21.9°C (71.4°F) to a refreshing 17.5°C (63.5°F). The temperature lowers to an average of 6.8°C (44.2°F) during September nights.

Humidity

The average relative humidity in September in Sennwald is 79%.

Rainfall

In September, in Sennwald, Switzerland, the rain falls for 13.7 days. Throughout September, 54mm (2.13") of precipitation is accumulated. Throughout the year, there are 181.9 rainfall days, and 949mm (37.36") of precipitation is accumulated.

Snowfall

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

Daylight

In September, the average length of the day in Sennwald is 12h and 34min.
On the first day of the month, sunrise is at 06:41 and sunset at 20:01. On the last day of September, sunrise is at 07:20 and sunset at 19:03 CEST.

Sunshine

The average sunshine in September is 9.4h.

UV index

The average daily maximum UV index in September is 3. A UV Index reading of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for average individuals.
Note: The daily maximum UV index of 3 in September interprets into the following advice:
Act with care - Obligation to protect against skin and eye damage is highlighted. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.

Frequently asked questions

What are September temperatures in Sennwald?
Sennwald in September has an average high-temperature of 17.5°C (63.5°F) and an average low-temperature of 6.8°C (44.2°F).
What is the average humidity in September in Sennwald?
In September, the average relative humidity in Sennwald, Switzerland, is 79%.
How much does it rain in Sennwald in September?
In September, the rain falls for 13.7 days. Throughout September, 54mm (2.13") of precipitation is accumulated.
When it does not snow in Sennwald?
In Sennwald, Switzerland, snow does not fall in June through September.
Does it snow in Sennwald in September?
In Sennwald, in September, it doesn't snow. In October, it regularly snows.
What is the average length of the day in September in Sennwald?
In September, the average day length in Sennwald, Switzerland, is 12h and 34min.
When is the sunrise / sunset in September in Sennwald?
On the first day of September, sunrise is at 06:41 and sunset at 20:01. On the last day of the month, sunrise is at 07:20 and sunset at 19:03 CEST.
How long on average sun shines in September in Sennwald?
The average sunshine duration in September is 9.4h.
What is the UV index reading in September in Sennwald?
The average daily maximum UV index in September in Sennwald, Switzerland, is 3. A UV Index of 3 to 5 symbolizes a moderate vulnerability from unsafe exposure to Sun's UV rays.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
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
Sennwald, Switzerland
  • Average high temperature in September: 17.5°C

The warmest month (with the highest average high temperature) is August (21.9°C).
The month with the lowest average high temperature is January (1.8°C).

  • Average low temperature in September: 6.8°C

The month with the highest average low temperature is July (10.1°C).
The coldest month (with the lowest average low temperature) is February (-6°C).

Average pressure in September
Sennwald, Switzerland
  • Average pressure in September: 1018.5mbar

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

The windiest month (with the highest average wind speed) is December (7.9km/h).
The calmest months (with the lowest average wind speed) are August and September (6.4km/h).

Average humidity in September
Sennwald, Switzerland
  • Average humidity in September: 79%

The months with the highest relative humidity are January and February (86%).
The months with the lowest relative humidity are July and August (76%).

Average rainfall in September
Sennwald, Switzerland
  • Average rainfall in September: 54mm

The wettest month (with the highest rainfall) is August (116mm).
The driest month (with the least rainfall) is April (51mm).

Average rainfall days in September
Sennwald, Switzerland
  • Average rainfall days in September: 13.7 days

The month with the highest number of rainy days is May (20.5 days).
The month with the least rainy days is February (10.4 days).

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

The month with the highest snowfall is January (214mm).
The months with the least snowfall are June, July, August and September (0mm).

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

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

Average daylight in September /
Average sunshine in September
Sennwald, 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 36min).

  • Average sunshine in September: 9h and 2min

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

Average sunshine days in September
Sennwald, Switzerland
  • Average sunshine days in September: 13.3 days

The month with the most sunshine days is October (17.5 days).
The month with the least sunshine days is July (7.3 days).

Average UV index in September
Sennwald, 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 January, February, March, November and December (UV index 2).

Average cloud cover in September
Sennwald, Switzerland
  • Average cloud cover in September: 34

The months with the most cloud cover are January and February (Cloud cover 44).
The month with the least cloud cover is August (Cloud cover 31).

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

The months with the highest visibility are April, May, June, July, August and November (9km).
The month with the lowest visibility is January (7km).

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