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 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 commences with an average high-temperature of a comfortable 17.2°C (63°F), showing little deviation from August's 14.3°C (57.7°F). In September, the nighttime temperature lowers to an average of 5.6°C (42.1°F).Humidity
The average relative humidity in September in Chillán Viejo is 74%.Rainfall
In Chillán Viejo, during September, the rain falls for 9.4 days and regularly aggregates up to 58mm (2.28") of precipitation. Throughout the year, in Chillán Viejo, Chile, there are 88.3 rainfall days, and 706mm (27.8") of precipitation is accumulated.Daylight
The average length of the day in September in Chillán Viejo is 11h and 53min.On the first day of September in Chillán Viejo, sunrise is at 07:07 and sunset at 18:28 -04. On the last day of the month, sunrise is at 07:24 and sunset at 19:52 -03.
Note: On Sunday, 08. September 2024, at 00:00, Daylight Saving Time starts, and the time zone changes from -04 to -03. Daylight Saving Time lasts until Sunday, 06. April 2025, at 00:00; consequently, the time zone reverts from -03 to -04.
Sunshine
In September, the average sunshine in Chillán Viejo is 7.8h.UV index
The months with the lowest UV index are May through July and September, with an average maximum UV index of 3. A UV Index of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for the ordinary person.Note: The maximum daily UV index, 3 in September, converts into the following recommendations:
Take heed. Individuals of lighter complexion can be burned in less than half an hour. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. Employ a wide-brim hat for potent defense against up to 50% of UV rays.
Frequently asked questions
What is the usual temperature for Chillán Viejo in September?
What is the average humidity in September in Chillán Viejo?
How much does it rain in Chillán Viejo in September?
What is the average length of the day in September in Chillán Viejo?
When is the sunrise / sunset in September in Chillán Viejo?
When does Daylight Saving Time (DST) start in September in Chillán Viejo?
How long on average sun shines in September in Chillán Viejo?
When is the lowest UV index in Chillán Viejo?
What is the UV index intensity in September in Chillán Viejo?
Average temperature in September
Chillán Viejo, Chile
- Average high temperature in September: 17.2°C
The warmest month (with the highest average high temperature) is January (30.9°C).
The month with the lowest average high temperature is July (12.4°C).
- Average low temperature in September: 5.6°C
The month with the highest average low temperature is January (13.4°C).
The coldest month (with the lowest average low temperature) is July (4.7°C).
Average pressure in September
Chillán Viejo, Chile
- Average pressure in September: 1019.7mbar
The month with the highest atmospheric pressure is July (1020.1mbar).
The month with the lowest atmospheric pressure is February (1013.8mbar).
Average wind speed in September
Chillán Viejo, Chile
- Average wind speed in September: 10.5km/h
The windiest month (with the highest average wind speed) is January (12.5km/h).
The calmest month (with the lowest average wind speed) is May (9.5km/h).
Average humidity in September
Chillán Viejo, Chile
- Average humidity in September: 74%
The month with the highest relative humidity is July (80%).
The month with the lowest relative humidity is January (50%).
Average rainfall in September
Chillán Viejo, Chile
- Average rainfall in September: 58mm
The wettest month (with the highest rainfall) is June (178mm).
The driest month (with the least rainfall) is January (5mm).
Average rainfall days in September
Chillán Viejo, Chile
- Average rainfall days in September: 9.4 days
The months with the highest number of rainy days are July and August (13.7 days).
The month with the least rainy days is January (1.8 days).
Average daylight in September /
Average sunshine in September
Chillán Viejo, Chile
- Average daylight in September: 11h and 5min
The month with the longest days is December (Average daylight: 14h and 36min).
The month with the shortest days is June (Average daylight: 9h and 42min).
- Average sunshine in September: 7h and 5min
The month with the most sunshine is January (Average sunshine: 11h and 48min).
The month with the least sunshine is June (Average sunshine: 6h and 6min).
Average sunshine days in September
Chillán Viejo, Chile
- Average sunshine days in September: 19.2 days
The month with the most sunshine days is January (29 days).
The month with the least sunshine days is July (16.5 days).
Average UV index in September
Chillán Viejo, Chile
- Average UV index in September: 3
The months with the highest UV index are January and February (UV index 6).
The months with the lowest UV index are May, June, July and September (UV index 3).
Average cloud cover in September
Chillán Viejo, Chile
- Average cloud cover in September: 33
The months with the most cloud cover are June, July and August (Cloud cover 42).
The month with the least cloud cover is January (Cloud cover 8).
Average visibility in September
Chillán Viejo, Chile
- Average visibility in September: 9km
The months with the highest visibility are January, February, March, April, November and December (10km).
The months with the lowest visibility are May, June, July, August, September and October (9km).
Chillán Viejo, Chile
Weather forecast for your location
2. Allow the app to use your location
