Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
September's arrival comes with a mild decrease in the average high-temperature, moving subtly from a warm 23.4°C (74.1°F) in August to a comfortable 18.9°C (66°F). In Uttwil, an average temperature of 9°C (48.2°F) is noted during September nights.Humidity
In Uttwil, the average relative humidity in September is 79%.Rainfall
In Uttwil, in September, during 12.5 rainfall days, 36mm (1.42") of precipitation is typically accumulated. In Uttwil, Switzerland, during the entire year, the rain falls for 161.9 days and collects up to 588mm (23.15") of precipitation.Snowfall
In Uttwil, snow does not fall in June through September.Daylight
In Uttwil, the average length of the day in September is 12h and 34min.On the first day of the month, sunrise is at 06:41 and sunset at 20:03. On the last day of September, in Uttwil, sunrise is at 07:20 and sunset at 19:03 CEST.
Sunshine
In Uttwil, the average sunshine in September is 9.2h.UV index
In September, the average daily maximum UV index in Uttwil is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: The daily high UV index of 4 in September translates into this advice:
Act with care - The need to guard against sun damage is communicated. The Sun's radiation is especially intense around midday; try to stay in shade during this period. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.
Frequently asked questions
What is the temperature in September in Uttwil?
What is the average humidity in September in Uttwil?
How much does it rain in Uttwil in September?
When it does not snow in Uttwil?
Does it snow in Uttwil in September?
What is the average length of the day in September in Uttwil?
When are sunrise and sunset in September in Uttwil?
How many hours of sunshine does Uttwil have in September?
How high is the UV index in September in Uttwil?
Average temperature in September
Uttwil, Switzerland
- Average high temperature in September: 18.9°C
The warmest months (with the highest average high temperature) are July and August (23.4°C).
The month with the lowest average high temperature is January (3.2°C).
- Average low temperature in September: 9°C
The month with the highest average low temperature is August (12.9°C).
The coldest month (with the lowest average low temperature) is February (-2.7°C).
Average pressure in September
Uttwil, Switzerland
- Average pressure in September: 1018.7mbar
The month with the highest atmospheric pressure is December (1020.7mbar).
The month with the lowest atmospheric pressure is April (1015.7mbar).
Average wind speed in September
Uttwil, Switzerland
- Average wind speed in September: 7.4km/h
The windiest month (with the highest average wind speed) is March (10km/h).
The calmest month (with the lowest average wind speed) is August (6.8km/h).
Average humidity in September
Uttwil, Switzerland
- Average humidity in September: 79%
The month with the highest relative humidity is January (86%).
The months with the lowest relative humidity are April and July (75%).
Average rainfall in September
Uttwil, Switzerland
- Average rainfall in September: 36mm
The wettest month (with the highest rainfall) is August (80mm).
The driest month (with the least rainfall) is November (30mm).
Average rainfall days in September
Uttwil, Switzerland
- Average rainfall days in September: 12.5 days
The month with the highest number of rainy days is May (18.9 days).
The month with the least rainy days is November (9.7 days).
Average snowfall in September
Uttwil, Switzerland
- Average snowfall in September: 0mm
The months with the highest snowfall are January and February (96mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Uttwil, Switzerland
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (8.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Uttwil, 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: 9h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The months with the least sunshine are February and December (Average sunshine: 4h and 54min).
Average sunshine days in September
Uttwil, Switzerland
- Average sunshine days in September: 14.7 days
The month with the most sunshine days is October (18.2 days).
The month with the least sunshine days is May (9.8 days).
Average UV index in September
Uttwil, 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
Uttwil, Switzerland
- Average cloud cover in September: 35
The months with the most cloud cover are January and February (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in September
Uttwil, Switzerland
- Average visibility in September: 8km
The months with the highest visibility are March, April, May, June, July, August and November (9km).
The months with the lowest visibility are January, February, September, October and December (8km).
Uttwil, Switzerland
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