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 witnesses a gentle descent in average high-temperature, descending from August's comfortable 19.9°C (67.8°F) to a mild 15.6°C (60.1°F). Throughout September, the temperature tends to fall to a consistent average low of 5.5°C (41.9°F).Humidity
In Wattenwil, the average relative humidity in September is 82%.Rainfall
September is the month with the least rainfall. Rain falls for 15.9 days and accumulates 53mm (2.09") of precipitation.Snowfall
In Wattenwil, snow does not fall in June through September.Daylight
The average length of the day in September in Wattenwil, Switzerland, is 12h and 33min.On the first day of September in Wattenwil, sunrise is at 06:50 and sunset at 20:09. On the last day of the month, sunrise is at 07:28 and sunset at 19:11 CEST.
Sunshine
The average sunshine in September in Wattenwil is 8.7h.UV index
In September, the average daily maximum UV index is 3. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for average individuals.Note: The maximum UV index of 3 during September leads to these instructions:
Exercise prevention - Precautions against solar damage are endorsed. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. 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
What is the usual temperature for Wattenwil in September?
What is the average humidity in September in Wattenwil?
What is the driest month in Wattenwil?
How many days does it rain in September in Wattenwil?
When it does not snow in Wattenwil?
Does it snow in Wattenwil in September?
How many hours of daylight does Wattenwil have in September?
When is the sunrise / sunset in September in Wattenwil?
How long on average sun shines in September in Wattenwil?
What is the UV index intensity in September in Wattenwil?
Average temperature in September
Wattenwil, Switzerland
- Average high temperature in September: 15.6°C
The warmest month (with the highest average high temperature) is July (20.1°C).
The month with the lowest average high temperature is January (0.8°C).
- Average low temperature in September: 5.5°C
The month with the highest average low temperature is July (9.3°C).
The coldest month (with the lowest average low temperature) is February (-7°C).
Average pressure in September
Wattenwil, Switzerland
- Average pressure in September: 1018.5mbar
The month with the highest atmospheric pressure is December (1021mbar).
The month with the lowest atmospheric pressure is April (1015.4mbar).
Average wind speed in September
Wattenwil, Switzerland
- Average wind speed in September: 6.3km/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 (6km/h).
Average humidity in September
Wattenwil, Switzerland
- Average humidity in September: 82%
The month with the highest relative humidity is February (88%).
The months with the lowest relative humidity are July and August (79%).
Average rainfall in September
Wattenwil, Switzerland
- Average rainfall in September: 53mm
The wettest month (with the highest rainfall) is May (117mm).
The driest month (with the least rainfall) is September (53mm).
Average rainfall days in September
Wattenwil, Switzerland
- Average rainfall days in September: 15.9 days
The month with the highest number of rainy days is May (21.8 days).
The month with the least rainy days is February (11.8 days).
Average snowfall in September
Wattenwil, Switzerland
- Average snowfall in September: 0mm
The month with the highest snowfall is December (208mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Wattenwil, Switzerland
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (11.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Wattenwil, Switzerland
- Average daylight in September: 12h and 4min
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 4min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The months with the least sunshine are January, February and December (Average sunshine: 5h and 18min).
Average sunshine days in September
Wattenwil, Switzerland
- Average sunshine days in September: 10.6 days
The month with the most sunshine days is October (14.8 days).
The month with the least sunshine days is May (6.8 days).
Average UV index in September
Wattenwil, Switzerland
- Average UV index in September: 3
The months with the highest UV index are June, July and August (UV index 4).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).
Average cloud cover in September
Wattenwil, Switzerland
- Average cloud cover in September: 37
The month with the most cloud cover is February (Cloud cover 48).
The months with the least cloud cover are August and October (Cloud cover 35).
Average visibility in September
Wattenwil, Switzerland
- Average visibility in September: 8km
The months with the highest visibility are January, March, April, May, June, July, August, September, October, November and December (8km).
The month with the lowest visibility is February (7km).
Wattenwil, Switzerland
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