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
Transitioning into September, San José Atlán records an average high-temperature of a still agreeable 21.8°C (71.2°F), almost identical to August's 22.8°C (73°F). During the nights in September, an average low-temperature of 12.1°C (53.8°F) is observed.Humidity
With an average relative humidity of 78%, September is the most humid month.Rainfall
In San José Atlán, Mexico, in September, during 20.3 rainfall days, 73mm (2.87") of precipitation is typically accumulated. Throughout the year, in San José Atlán, there are 139.6 rainfall days, and 468mm (18.43") of precipitation is accumulated.Daylight
The average length of the day in September is 12h and 15min.On the first day of September in San José Atlán, sunrise is at 6:23 am and sunset at 6:53 pm. On the last day of the month, sunrise is at 6:29 am and sunset at 6:27 pm CST.
Sunshine
In San José Atlán, Mexico, the average sunshine in September is 8.8h.UV index
In September, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for the average person.Note: The maximum UV index, 5 during September, leads to the following recommendations:
Adopt protective measures - Requirement to safeguard skin and eyes from harm exists. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in San José Atlán in September?
What is the most humid month in San José Atlán?
What is the average humidity in September in San José Atlán?
How many days does it rain in September in San José Atlán?
What is the average length of the day in September in San José Atlán?
When is the sunrise / sunset in September in San José Atlán?
How many hours of sunshine does San José Atlán have in September?
How high is the UV index in September in San José Atlán?
Average temperature in September
San José Atlán, Mexico
- Average high temperature in September: 21.8°C
The warmest months (with the highest average high temperature) are April and May (26.3°C).
The month with the lowest average high temperature is January (19.5°C).
- Average low temperature in September: 12.1°C
The month with the highest average low temperature is May (13.8°C).
The coldest month (with the lowest average low temperature) is January (7.1°C).
Average pressure in September
San José Atlán, Mexico
- Average pressure in September: 1015.7mbar
The month with the highest atmospheric pressure is January (1018.6mbar).
The month with the lowest atmospheric pressure is May (1013.8mbar).
Average wind speed in September
San José Atlán, Mexico
- Average wind speed in September: 9.2km/h
The windiest month (with the highest average wind speed) is March (11.2km/h).
The calmest month (with the lowest average wind speed) is July (9km/h).
Average humidity in September
San José Atlán, Mexico
- Average humidity in September: 78%
The month with the highest relative humidity is September (78%).
The month with the lowest relative humidity is April (43%).
Average rainfall in September
San José Atlán, Mexico
- Average rainfall in September: 73mm
The wettest month (with the highest rainfall) is July (109mm).
The driest month (with the least rainfall) is December (3mm).
Average rainfall days in September
San José Atlán, Mexico
- Average rainfall days in September: 20.3 days
The month with the highest number of rainy days is July (24.2 days).
The month with the least rainy days is December (2.7 days).
Average daylight in September /
Average sunshine in September
San José Atlán, Mexico
- Average daylight in September: 12h and 1min
The month with the longest days is June (Average daylight: 13h and 18min).
The month with the shortest days is December (Average daylight: 10h and 54min).
- Average sunshine in September: 8h and 5min
The month with the most sunshine is June (Average sunshine: 10h and 6min).
The month with the least sunshine is November (Average sunshine: 8h and 12min).
Average sunshine days in September
San José Atlán, Mexico
- Average sunshine days in September: 6.5 days
The month with the most sunshine days is December (26.3 days).
The month with the least sunshine days is July (3.2 days).
Average UV index in September
San José Atlán, Mexico
- Average UV index in September: 5
The month with the highest UV index is April (UV index 6).
The months with the lowest UV index are January, August, October, November and December (UV index 4).
Average cloud cover in September
San José Atlán, Mexico
- Average cloud cover in September: 44
The months with the most cloud cover are July and September (Cloud cover 44).
The months with the least cloud cover are March, April and December (Cloud cover 13).
Average visibility in September
San José Atlán, Mexico
- Average visibility in September: 8km
The months with the highest visibility are January, February, March, April, May and December (10km).
The months with the lowest visibility are July, August and September (8km).
San José Atlán, Mexico
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