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
September
Weather in September
Temperature
The transition from August to September sees an average high-temperature of a still cool 11.8°C (53.2°F), indicating a minor variance from the prior month. An average low-temperature of 5°C (41°F) is observed during September nights.Humidity
The average relative humidity in September is 84%.Rainfall
In Los Monos, Chile, in September, during 18.2 rainfall days, 86mm (3.39") of precipitation is typically accumulated. In Los Monos, during the entire year, the rain falls for 194.3 days and collects up to 1256mm (49.45") of precipitation.Daylight
The average length of the day in September is 11h and 50min.On the first day of September, sunrise is at 07:16 and sunset at 18:29 -04. On the last day of the month, sunrise is at 07:26 and sunset at 19:58 -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 Los Monos, the average sunshine in September is 6.2h.UV index
June, July and September, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a low health risk from unsafe exposure to UV radiation for ordinary individuals.Note: A daily maximum UV index of 2 in September translates into the following instructions:
Children, babies, and those with sensitive skin should always be shielded from long periods of sun exposure. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in September?
What is the average humidity in September?
How much does it rain in September?
What is the average length of the day in September?
When is the sunrise / sunset in September?
When does Daylight Saving Time (DST) start in September?
How long on average sun shines in September?
When is the lowest UV index?
What is the UV index reading in September?
Average temperature in September
Los Monos, Chile
- Average high temperature in September: 11.8°C
The warmest month (with the highest average high temperature) is January (19.3°C).
The month with the lowest average high temperature is July (9.4°C).
- Average low temperature in September: 5°C
The month with the highest average low temperature is February (10.7°C).
The coldest month (with the lowest average low temperature) is July (4.8°C).
Average pressure in September
Los Monos, Chile
- Average pressure in September: 1019.3mbar
The month with the highest atmospheric pressure is September (1019.3mbar).
The month with the lowest atmospheric pressure is February (1015.6mbar).
Average wind speed in September
Los Monos, Chile
- Average wind speed in September: 11.1km/h
The windiest months (with the highest average wind speed) are July and August (13.3km/h).
The calmest month (with the lowest average wind speed) is April (10.1km/h).
Average humidity in September
Los Monos, Chile
- Average humidity in September: 84%
The months with the highest relative humidity are May, June, July and August (87%).
The month with the lowest relative humidity is January (77%).
Average rainfall in September
Los Monos, Chile
- Average rainfall in September: 86mm
The wettest month (with the highest rainfall) is June (178mm).
The driest month (with the least rainfall) is January (42mm).
Average rainfall days in September
Los Monos, Chile
- Average rainfall days in September: 18.2 days
The month with the highest number of rainy days is August (21.7 days).
The month with the least rainy days is February (10.2 days).
Average daylight in September /
Average sunshine in September
Los Monos, Chile
- Average daylight in September: 11h and 5min
The month with the longest days is December (Average daylight: 15h and 6min).
The month with the shortest days is June (Average daylight: 9h and 12min).
- Average sunshine in September: 6h and 1min
The month with the most sunshine is January (Average sunshine: 9h and 42min).
The month with the least sunshine is June (Average sunshine: 3h and 54min).
Average sunshine days in September
Los Monos, Chile
- Average sunshine days in September: 10.5 days
The month with the most sunshine days is January (18.3 days).
The month with the least sunshine days is August (8.7 days).
Average UV index in September
Los Monos, Chile
- Average UV index in September: 2
The month with the highest UV index is February (UV index 5).
The months with the lowest UV index are June, July and September (UV index 2).
Average cloud cover in September
Los Monos, Chile
- Average cloud cover in September: 51
The month with the most cloud cover is June (Cloud cover 60).
The month with the least cloud cover is January (Cloud cover 36).
Average visibility in September
Los Monos, Chile
- Average visibility in September: 9km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
