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 reveals a small adjustment in temperature, transitioning from an average high of a moderately hot 24.4°C (75.9°F) in August to a refreshing 19.9°C (67.8°F). Dättwil's September nights cool down to an average low-temperature of 8.4°C (47.1°F).Humidity
In September, the average relative humidity in Dättwil, Switzerland, is 80%.Rainfall
The months with the least rainfall in Dättwil are April and September Rain falls for 12.5 days and accumulates 38mm (1.5") of rain.Snowfall
June through September are months without snowfall in Dättwil.Daylight
In Dättwil, Switzerland, the average length of the day in September is 12h and 34min.On the first day of the month, sunrise is at 06:46 and sunset at 20:07. On the last day of September, in Dättwil, sunrise is at 07:25 and sunset at 19:08 CEST.
Sunshine
The average sunshine in September in Dättwil is 8.9h.UV index
In Dättwil, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for average individuals.Note: In September, the maximum UV index of 4 suggests these recommendations:
Adopt protective measures - Suggestions to resist sunburn are offered. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.
Frequently asked questions
What are September temperatures in Dättwil?
What is the average humidity in September in Dättwil?
What is the driest month in Dättwil?
How much does it rain in Dättwil in September?
When it does not snow in Dättwil?
Does it snow in Dättwil in September?
What is the average length of the day in September in Dättwil?
What time are sunrise and sunset in September in Dättwil?
How many hours of sunshine does Dättwil have in September?
How high is the UV index in September in Dättwil?
Average temperature in September
Dättwil, Switzerland
- Average high temperature in September: 19.9°C
The warmest months (with the highest average high temperature) are July and August (24.4°C).
The month with the lowest average high temperature is January (3.3°C).
- Average low temperature in September: 8.4°C
The month with the highest average low temperature is August (12.3°C).
The coldest month (with the lowest average low temperature) is January (-3.1°C).
Average pressure in September
Dättwil, Switzerland
- Average pressure in September: 1018.7mbar
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
Dättwil, 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
Dättwil, Switzerland
- Average humidity in September: 80%
The month with the highest relative humidity is January (88%).
The months with the lowest relative humidity are April and July (76%).
Average rainfall in September
Dättwil, Switzerland
- Average rainfall in September: 38mm
The wettest month (with the highest rainfall) is August (82mm).
The driest months (with the least rainfall) are April and September (38mm).
Average rainfall days in September
Dättwil, Switzerland
- Average rainfall days in September: 12.5 days
The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is February (7.8 days).
Average snowfall in September
Dättwil, Switzerland
- Average snowfall in September: 0mm
The month with the highest snowfall is December (232mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Dättwil, Switzerland
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (12.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Dättwil, 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 18min).
The month with the least sunshine is January (Average sunshine: 4h and 42min).
Average sunshine days in September
Dättwil, Switzerland
- Average sunshine days in September: 15 days
The month with the most sunshine days is October (16.5 days).
The month with the least sunshine days is June (11 days).
Average UV index in September
Dättwil, 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
Dättwil, 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
Dättwil, Switzerland
- Average visibility in September: 8km
The months with the highest visibility are April, July and August (9km).
The months with the lowest visibility are January and February (7km).
Dättwil, Switzerland
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