September weather forecast
Herzberg, Switzerland

September

Weather in September

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

Temperature

A mild drop in Herzberg's average high-temperature is observed in September, transitioning from a warm 23.3°C (73.9°F) in August to a refreshing 18.8°C (65.8°F). In Herzberg, the expected average low-temperature for September is a frosty 8.2°C (46.8°F).

Humidity

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

Rainfall

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

Snowfall

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

Daylight

In September, the average length of the day is 12h and 34min.
On the first day of September, sunrise is at 06:47 and sunset at 20:07. On the last day of the month, sunrise is at 07:26 and sunset at 19:09 CEST.

Sunshine

The average sunshine in September in Herzberg, Switzerland, is 8.9h.

UV index

In September, the average daily maximum UV index in Herzberg is 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for the average person.
Note: In September, the UV index of 4 transforms into the following advice:
Put precautions into practice - Protective measures against sun-induced damage are advised. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.

Frequently asked questions

What are September temperatures in Herzberg?
The high-temperature in Herzberg, Switzerland, during September is 18.8°C (65.8°F) and the low-temperature is 8.2°C (46.8°F).
What is the average humidity in September in Herzberg?
In Herzberg, the average relative humidity in September is 81%.
What is the driest month in Herzberg?
September is the month with the least rainfall in Herzberg. Rain falls for 14.5 days and accumulates 45mm (1.77") of precipitation.
How many days does it rain in September in Herzberg?
In Herzberg, 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 Herzberg?
June through September are months without snowfall in Herzberg, Switzerland.
Does it snow in Herzberg in September?
In Herzberg, in September, it doesn't snow. In October, it regularly snows.
What is the average length of the day in September in Herzberg?
In Herzberg, Switzerland, the average day length in September is 12h and 34min.
When is the sunrise / sunset in September in Herzberg?
On the first day of September in Herzberg, Switzerland, sunrise is at 06:47 and sunset at 20:07. On the last day of the month, sunrise is at 07:26 and sunset at 19:09 CEST.
How many hours of sunshine does Herzberg have in September?
In Herzberg, the average sunshine duration in September is 8.9h.
What is the UV index reading in September in Herzberg?
The average daily maximum UV index in September in Herzberg is 4. A UV Index estimate of 3 to 5 represents a moderate health threat 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
Herzberg, 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).

Average pressure in September
Herzberg, 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).

Average wind speed in September
Herzberg, 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).

Average humidity in September
Herzberg, 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%).

Average rainfall in September
Herzberg, 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).

Average rainfall days in September
Herzberg, 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).

Average snowfall in September
Herzberg, 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).

Average snowfall days in September
Herzberg, 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).

Average daylight in September /
Average sunshine in September
Herzberg, 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 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).

Average sunshine days in September
Herzberg, 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).

Average UV index in September
Herzberg, 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).

Average cloud cover in September
Herzberg, 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).

Average visibility in September
Herzberg, 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).

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