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's commencement is accompanied by an average high-temperature of a pleasant 20.2°C (68.4°F), diverging marginally from August's 18.1°C (64.6°F). September nights in Las Rosas see a notable contrast from daytime highs, with the nighttime temperature averaging at a frosty 6.7°C (44.1°F).Humidity
In September, the average relative humidity in Las Rosas is 66%.Rainfall
In September, in Las Rosas, the rain falls for 5.3 days. Throughout September, 20mm (0.79") of precipitation is accumulated. Throughout the year, there are 42.3 rainfall days, and 215mm (8.46") of precipitation is accumulated.Daylight
The average length of the day in September is 11h and 54min.On the first day of September, sunrise is at 07:01 and sunset at 18:27 -04. On the last day of the month, sunrise is at 07:21 and sunset at 19:46 -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 Las Rosas, the average sunshine in September is 8.7h.UV index
The average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for ordinary individuals.Note: In September, the maximum UV index of 4 suggests this advice:
Undertake precautions - It is suggested to shield oneself from sunburn. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September in Las Rosas?
What is the average humidity in September in Las Rosas?
How much does it rain in Las Rosas in September?
What is the average length of the day in September in Las Rosas?
When is the sunrise / sunset in September in Las Rosas?
When does Daylight Saving Time (DST) start in September in Las Rosas?
How long on average sun shines in September in Las Rosas?
What is the UV index reading in September in Las Rosas?
Average temperature in September
Las Rosas, Chile
- Average high temperature in September: 20.2°C
The warmest month (with the highest average high temperature) is January (29.3°C).
The month with the lowest average high temperature is July (15.8°C).
- Average low temperature in September: 6.7°C
The month with the highest average low temperature is January (13.9°C).
The coldest month (with the lowest average low temperature) is July (5.9°C).
Average pressure in September
Las Rosas, Chile
- Average pressure in September: 1019.2mbar
The month with the highest atmospheric pressure is July (1019.7mbar).
The month with the lowest atmospheric pressure is February (1014.5mbar).
Average wind speed in September
Las Rosas, Chile
- Average wind speed in September: 6.6km/h
The windiest month (with the highest average wind speed) is December (8.2km/h).
The calmest month (with the lowest average wind speed) is May (5.8km/h).
Average humidity in September
Las Rosas, Chile
- Average humidity in September: 66%
The months with the highest relative humidity are July and August (67%).
The months with the lowest relative humidity are January, March and April (54%).
Average rainfall in September
Las Rosas, Chile
- Average rainfall in September: 20mm
The wettest month (with the highest rainfall) is June (71mm).
The driest months (with the least rainfall) are February and March (1mm).
Average rainfall days in September
Las Rosas, Chile
- Average rainfall days in September: 5.3 days
The month with the highest number of rainy days is June (7.1 days).
The month with the least rainy days is February (0.9 days).
Average daylight in September /
Average sunshine in September
Las Rosas, Chile
- Average daylight in September: 11h and 5min
The month with the longest days is December (Average daylight: 14h and 18min).
The month with the shortest days is June (Average daylight: 10h and 0min).
- Average sunshine in September: 8h and 4min
The month with the most sunshine is February (Average sunshine: 10h and 0min).
The month with the least sunshine is June (Average sunshine: 8h and 6min).
Average sunshine days in September
Las Rosas, Chile
- Average sunshine days in September: 22.9 days
The month with the most sunshine days is March (29.8 days).
The month with the least sunshine days is June (22.2 days).
Average UV index in September
Las Rosas, Chile
- Average UV index in September: 4
The months with the highest UV index are January, February and December (UV index 6).
The months with the lowest UV index are June and July (UV index 3).
Average cloud cover in September
Las Rosas, Chile
- Average cloud cover in September: 24
The month with the most cloud cover is June (Cloud cover 28).
The month with the least cloud cover is February (Cloud cover 5).
Average visibility in September
Las Rosas, Chile
- Average visibility in September: 9km
The months with the highest visibility are January, February, March, April, May, June, July, October, November and December (10km).
The months with the lowest visibility are August and September (9km).
Las Rosas, Chile
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