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
September
Weather in September
Temperature
The transition to September results in a modest reduction in average high-temperature, moving from a comfortable 19°C (66.2°F) in August to a moderate 14.6°C (58.3°F). During September, Castiel's temperature falls to a steady low-temperature average of 3.7°C (38.7°F).Humidity
In September, the average relative humidity is 81%.Rainfall
In Castiel, in September, it is raining for 17.5 days, with typically 62mm (2.44") of accumulated precipitation. Throughout the year, there are 211.5 rainfall days, and 1072mm (42.2") of precipitation is accumulated.Snowfall
In Castiel, Switzerland, snow does not fall in June through September.Daylight
The average length of the day in September in Castiel is 12h and 33min.On the first day of the month, sunrise is at 06:41 and sunset at 20:00. On the last day of September, sunrise is at 07:19 and sunset at 19:03 CEST.
Sunshine
The average sunshine in September is 9h.UV index
The average daily maximum UV index in September in Castiel, Switzerland, is 3. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for ordinary individuals.Note: In September, the maximum UV index of 3 transforms into these recommendations:
Be vigilant - Preventing sunburn is recommended. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. Stay sun-safe with clothing that is both closely woven and worn loosely.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature in Castiel?
What is the average humidity in September in Castiel?
How much does it rain in Castiel in September?
When it does not snow in Castiel?
Does it snow in Castiel in September?
How many hours of daylight does Castiel have in September?
What time are sunrise and sunset in September in Castiel?
How long on average sun shines in September in Castiel?
What is the UV index reading in September in Castiel?
Average temperature in September
Castiel, Switzerland
- Average high temperature in September: 14.6°C
The warmest month (with the highest average high temperature) is August (19°C).
The month with the lowest average high temperature is January (-1.3°C).
- Average low temperature in September: 3.7°C
The month with the highest average low temperature is August (7.3°C).
The coldest month (with the lowest average low temperature) is February (-10°C).
Average pressure in September
Castiel, Switzerland
- Average pressure in September: 1018.3mbar
The month with the highest atmospheric pressure is December (1020.8mbar).
The month with the lowest atmospheric pressure is April (1015.5mbar).
Average wind speed in September
Castiel, Switzerland
- Average wind speed in September: 6.6km/h
The windiest month (with the highest average wind speed) is November (8.2km/h).
The calmest month (with the lowest average wind speed) is August (6.5km/h).
Average humidity in September
Castiel, Switzerland
- Average humidity in September: 81%
The month with the highest relative humidity is March (90%).
The month with the lowest relative humidity is July (78%).
Average rainfall in September
Castiel, Switzerland
- Average rainfall in September: 62mm
The wettest month (with the highest rainfall) is August (133mm).
The driest month (with the least rainfall) is February (61mm).
Average rainfall days in September
Castiel, Switzerland
- Average rainfall days in September: 17.5 days
The month with the highest number of rainy days is May (24.3 days).
The month with the least rainy days is January (12.3 days).
Average snowfall in September
Castiel, Switzerland
- Average snowfall in September: 0mm
The month with the highest snowfall is January (320mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Castiel, Switzerland
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (13.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Castiel, 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: 9h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 5h and 18min).
Average sunshine days in September
Castiel, Switzerland
- Average sunshine days in September: 9.1 days
The month with the most sunshine days is October (14.6 days).
The month with the least sunshine days is May (3.8 days).
Average UV index in September
Castiel, Switzerland
- Average UV index in September: 3
The months with the highest UV index are June and July (UV index 4).
The months with the lowest UV index are January and November (UV index 1).
Average cloud cover in September
Castiel, Switzerland
- Average cloud cover in September: 39
The month with the most cloud cover is March (Cloud cover 48).
The months with the least cloud cover are August and October (Cloud cover 37).
Average visibility in September
Castiel, Switzerland
- Average visibility in September: 7km
The months with the highest visibility are May, June, July, August, October and November (8km).
The month with the lowest visibility is January (6km).
