September weather forecastHorgen, Switzerland
September
Weather in September
September, the first month of the autumn in Horgen, is also an enjoyable month, with an average temperature ranging between max 19.9°C (67.8°F) and min 8.4°C (47.1°F).Temperature
With September's onset, the weather reveals a slight temperature decrease, transitioning from a warm 24.7°C (76.5°F) in August to a refreshing 19.9°C (67.8°F). In September, Horgen experiences a temperature dip to an average of 8.4°C (47.1°F) at night.Humidity
The average relative humidity in September is 80%.Rainfall
In September, the rain falls for 10.2 days. Throughout September, 24mm (0.94") of precipitation is accumulated. In Horgen, during the entire year, the rain falls for 134.8 days and collects up to 471mm (18.54") of precipitation.Snowfall
In Horgen, snow does not fall in June through September.Daylight
In Horgen, the average length of the day in September is 12h and 34min.On the first day of September, sunrise is at 06:45 and sunset at 20:05. On the last day of the month, sunrise is at 07:23 and sunset at 19:07 CEST.
Sunshine
In Horgen, the average sunshine in September is 8.9h.UV index
In September, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for ordinary individuals.Note: A maximum daily UV index of 4 during September morphs into the following directions:
Adopt protective measures - Requirement to safeguard skin and eyes from harm exists. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Horgen, Switzerland
- Average high temperature in September: 19.9°C
The warmest month (with the highest average high temperature) is July (24.8°C).
The month with the lowest average high temperature is January (3.2°C).
- Average low temperature in September: 8.4°C
The months with the highest average low temperature are July and August (12.2°C).
The coldest month (with the lowest average low temperature) is January (-3.2°C).
Average pressure in September
Horgen, 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 (1015.7mbar).
Average wind speed in September
Horgen, Switzerland
- Average wind speed in September: 6.3km/h
The windiest month (with the highest average wind speed) is March (8.7km/h).
The calmest month (with the lowest average wind speed) is August (6km/h).
Average humidity in September
Horgen, Switzerland
- Average humidity in September: 80%
The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is July (75%).
Average rainfall in September
Horgen, Switzerland
- Average rainfall in September: 24mm
The wettest month (with the highest rainfall) is July (61mm).
The driest month (with the least rainfall) is April (21mm).
Average rainfall days in September
Horgen, Switzerland
- Average rainfall days in September: 10.2 days
The month with the highest number of rainy days is May (15.6 days).
The month with the least rainy days is February (8 days).
Average snowfall in September
Horgen, Switzerland
- Average snowfall in September: 0mm
The month with the highest snowfall is December (85mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Horgen, Switzerland
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (8.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Horgen, Switzerland
- Average daylight in September: 12h and 36min
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: 8h and 54min
The month with the most sunshine is August (Average sunshine: 10h and 24min).
The months with the least sunshine are January, February and December (Average sunshine: 4h and 48min).
Average sunshine days in September
Horgen, Switzerland
- Average sunshine days in September: 17.4 days
The month with the most sunshine days is October (19.5 days).
The month with the least sunshine days is May (13.6 days).
Average UV index in September
Horgen, 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, November and December (UV index 2).
Average cloud cover in September
Horgen, Switzerland
- Average cloud cover in September: 36
The months with the most cloud cover are January and February (Cloud cover 54).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in September
Horgen, Switzerland
- Average visibility in September: 8km
The months with the highest visibility are April, July and August (9km).
The month with the lowest visibility is January (7km).
