September weather forecastInnertkirchen, Switzerland

September

Weather in September

September, the first month of the autumn in Innertkirchen, is also a moderate month, with an average temperature ranging between min 4.1°C (39.4°F) and max 13.1°C (55.6°F).

Temperature

Start of September brings a slight shift in the average high-temperature, dipping a bit from August's refreshing 17.3°C (63.1°F) to a mild 13.1°C (55.6°F). Innertkirchen, in the month of September, anticipates a consistent average low-temperature of 4.1°C (39.4°F).

Humidity

The average relative humidity in September in Innertkirchen, Switzerland, is 84%.

Rainfall

September is the month with the least rainfall. Rain falls for 19 days and accumulates 81mm (3.19") of precipitation.

Snowfall

June through September are months without snowfall in Innertkirchen.

Daylight

In Innertkirchen, the average length of the day in September is 12h and 33min.
On the first day of the month, sunrise is at 06:47 and sunset at 20:06. On the last day of September, sunrise is at 07:25 and sunset at 19:08 CEST.

Sunshine

In September, the average sunshine is 8.4h.

UV index

The average daily maximum UV index in September in Innertkirchen, Switzerland, is 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.
Note: In September, the UV index of 2 transforms into the following advice:
Most individuals face no significant issues with extended sun exposure, but it is always essential to protect children, babies, and those with sensitive skin. Minimize direct exposure to the Sun during midday when its radiation is at its peak. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays.

Frequently asked questions

September temperatures vary between a high-temperature of 13.1°C (55.6°F) and a low-temperature of 4.1°C (39.4°F).

In September, the average relative humidity is 84%.

The month with the least rainfall in Innertkirchen is September, when the rain falls for 19 days and typically collects 81mm (3.19") of precipitation.

In Innertkirchen, in September, during 19 rainfall days, 81mm (3.19") of precipitation is typically accumulated.

June through September are months without snowfall in Innertkirchen, Switzerland.

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

The average day length in September in Innertkirchen, Switzerland, is 12h and 33min.

In September, on the first day of the month, sunrise is at 06:47 and sunset at 20:06. On the last day of the month, in Innertkirchen, Switzerland, sunrise is at 07:25 and sunset at 19:08 CEST.

In Innertkirchen, the average sunshine duration in September is 8.4h.

In Innertkirchen, Switzerland, the average daily maximum UV index in September is 2. A UV Index estimate of 2, and below, represents a low health threat from unprotected exposure to UV radiation.
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 sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Innertkirchen, Switzerland

  • Average high temperature in September: 13.1°C

The warmest month (with the highest average high temperature) is August (17.3°C).
The month with the lowest average high temperature is January (-1.9°C).

  • Average low temperature in September: 4.1°C

The month with the highest average low temperature is July (7.6°C).
The coldest month (with the lowest average low temperature) is February (-9.6°C).

Average pressure in September
Innertkirchen, Switzerland

  • Average pressure in September: 1018.4mbar

The month with the highest atmospheric pressure is December (1020.9mbar).
The month with the lowest atmospheric pressure is April (1015.4mbar).

Average wind speed in September
Innertkirchen, Switzerland

  • Average wind speed in September: 5.9km/h

The windiest month (with the highest average wind speed) is December (8.3km/h).
The calmest month (with the lowest average wind speed) is August (5.6km/h).

Average humidity in September
Innertkirchen, Switzerland

  • Average humidity in September: 84%

The month with the highest relative humidity is March (91%).
The months with the lowest relative humidity are July and August (81%).

Average rainfall in September
Innertkirchen, Switzerland

  • Average rainfall in September: 81mm

The wettest month (with the highest rainfall) is June (174mm).
The driest month (with the least rainfall) is September (81mm).

Average rainfall days in September
Innertkirchen, Switzerland

  • Average rainfall days in September: 19 days

The month with the highest number of rainy days is July (25.7 days).
The month with the least rainy days is February (12.3 days).

Average snowfall in September
Innertkirchen, Switzerland

  • Average snowfall in September: 0mm

The month with the highest snowfall is January (303mm).
The months with the least snowfall are June, July, August and September (0mm).

Average snowfall days in September
Innertkirchen, Switzerland

  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (13.3 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

  • Average daylight in September: 12h and 36min

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 24min

The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).

Average sunshine days in September
Innertkirchen, Switzerland

  • Average sunshine days in September: 8.5 days

The month with the most sunshine days is October (14.1 days).
The month with the least sunshine days is June (3.2 days).

Average UV index in September
Innertkirchen, Switzerland

  • Average UV index in September: 2

The months with the highest UV index are June and July (UV index 4).
The months with the lowest UV index are January, November and December (UV index 1).

Average cloud cover in September
Innertkirchen, Switzerland

  • Average cloud cover in September: 42

The month with the most cloud cover is February (Cloud cover 55).
The months with the least cloud cover are August and October (Cloud cover 40).

Average visibility in September
Innertkirchen, Switzerland

  • Average visibility in September: 7km

The months with the highest visibility are June, July, August, October and November (8km).
The months with the lowest visibility are January and February (6km).