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 commencement of September notes an average high-temperature of a still moderate 15.9°C (60.6°F), exhibiting little difference from the previous month. Los Cerros de San Juan's September nights demonstrate minimal variation from the daytime temperatures, with an average of 11.5°C (52.7°F).Humidity
With an average relative humidity of 78%, September is the most humid month.Rainfall
In Los Cerros de San Juan, in September, during 9 rainfall days, 51mm (2.01") of precipitation is typically accumulated. Throughout the year, in Los Cerros de San Juan, there are 114.7 rainfall days, and 678mm (26.69") of precipitation is accumulated.Daylight
In September, the average length of the day is 11h and 54min.On the first day of the month, sunrise is at 07:09 and sunset at 18:33. On the last day of September, sunrise is at 06:28 and sunset at 18:54 -03.
Sunshine
The average sunshine in September is 7.6h.UV index
The average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: The maximum daily UV index of 4 during September translates into the following directions:
Put precautions into practice - Ensuring skin and eye safety is a necessity. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in September?
What is the most humid month?
What is the average humidity in September?
How much does it rain in September?
How many hours of daylight does Los Cerros de San Juan have in September?
When are sunrise and sunset in September?
How many hours of sunshine does Los Cerros de San Juan have in September?
What is the UV index intensity in September in Los Cerros de San Juan?
Average temperature in September
Los Cerros de San Juan, Uruguay
- Average high temperature in September: 15.9°C
The warmest month (with the highest average high temperature) is January (27.2°C).
The month with the lowest average high temperature is July (13.1°C).
- Average low temperature in September: 11.5°C
The month with the highest average low temperature is January (21.3°C).
The coldest month (with the lowest average low temperature) is July (9.6°C).
Average pressure in September
Los Cerros de San Juan, Uruguay
- Average pressure in September: 1017.9mbar
The month with the highest atmospheric pressure is July (1019.1mbar).
The month with the lowest atmospheric pressure is December (1011.1mbar).
Average wind speed in September
Los Cerros de San Juan, Uruguay
- Average wind speed in September: 21.1km/h
The windiest month (with the highest average wind speed) is September (21.1km/h).
The calmest month (with the lowest average wind speed) is December (18.1km/h).
Average humidity in September
Los Cerros de San Juan, Uruguay
- Average humidity in September: 78%
The month with the highest relative humidity is September (78%).
The month with the lowest relative humidity is January (66%).
Average rainfall in September
Los Cerros de San Juan, Uruguay
- Average rainfall in September: 51mm
The wettest month (with the highest rainfall) is November (69mm).
The driest month (with the least rainfall) is May (43mm).
Average rainfall days in September
Los Cerros de San Juan, Uruguay
- Average rainfall days in September: 9 days
The month with the highest number of rainy days is March (11 days).
The month with the least rainy days is June (8.2 days).
Average daylight in September /
Average sunshine in September
Los Cerros de San Juan, Uruguay
- Average daylight in September: 11h and 5min
The month with the longest days is December (Average daylight: 14h and 24min).
The month with the shortest days is June (Average daylight: 9h and 54min).
- Average sunshine in September: 7h and 4min
The month with the most sunshine is December (Average sunshine: 11h and 6min).
The month with the least sunshine is June (Average sunshine: 6h and 0min).
Average sunshine days in September
Los Cerros de San Juan, Uruguay
- Average sunshine days in September: 19.4 days
The month with the most sunshine days is August (21.3 days).
The month with the least sunshine days is February (16.6 days).
Average UV index in September
Los Cerros de San Juan, Uruguay
- Average UV index in September: 4
The months with the highest UV index are January, February, March, November and December (UV index 6).
The month with the lowest UV index is July (UV index 3).
Average cloud cover in September
Los Cerros de San Juan, Uruguay
- Average cloud cover in September: 34
The month with the most cloud cover is July (Cloud cover 38).
The month with the least cloud cover is January (Cloud cover 17).
Average visibility in September
Los Cerros de San Juan, Uruguay
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
