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 snowfall 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 brings an average high-temperature of a comfortable 19.7°C (67.5°F), showing a slight difference from August's 20.8°C (69.4°F). During the nights in September, San Francisco Chimalpa observes an average low-temperature of 10.3°C (50.5°F).Humidity
The most humid month in San Francisco Chimalpa is September, with an average relative humidity of 79%.Rainfall
In San Francisco Chimalpa, in September, during 19.6 rainfall days, 62mm (2.44") of precipitation is typically accumulated. In San Francisco Chimalpa, during the entire year, the rain falls for 134.4 days and collects up to 455mm (17.91") of precipitation.Snowfall
February through November are months without snowfall.Daylight
In September, the average length of the day is 12h and 14min.On the first day of September in San Francisco Chimalpa, Mexico, sunrise is at 6:22 am and sunset at 6:51 pm. On the last day of the month, sunrise is at 6:28 am and sunset at 6:26 pm CST.
Sunshine
The average sunshine in September is 8.9h.UV index
The months with the lowest UV index in San Francisco Chimalpa are January, June through December, with an average maximum UV index of 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for average individuals.Note: A maximum high daily UV index of 4 during September translates into the following directions:
Exercise prevention - Warding off sunburn is urged. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. Opt for tightly woven and loose clothing to enhance protection from the Sun.
Frequently asked questions
What are the temperatures in San Francisco Chimalpa in September?
What is the most humid month in San Francisco Chimalpa?
What is the average humidity in September in San Francisco Chimalpa?
How much does it rain in San Francisco Chimalpa in September?
When it does not snow in San Francisco Chimalpa?
What is the average length of the day in September in San Francisco Chimalpa?
When is the sunrise / sunset in September in San Francisco Chimalpa?
How many hours of sunshine does San Francisco Chimalpa have in September?
When is the lowest UV index in San Francisco Chimalpa?
What is the UV index reading in September in San Francisco Chimalpa?
Average temperature in September
San Francisco Chimalpa, Mexico
- Average high temperature in September: 19.7°C
The warmest months (with the highest average high temperature) are April and May (24.3°C).
The month with the lowest average high temperature is January (18°C).
- Average low temperature in September: 10.3°C
The month with the highest average low temperature is May (12.3°C).
The coldest month (with the lowest average low temperature) is January (6°C).
Average pressure in September
San Francisco Chimalpa, Mexico
- Average pressure in September: 1015.6mbar
The month with the highest atmospheric pressure is January (1018.4mbar).
The month with the lowest atmospheric pressure is May (1014.1mbar).
Average wind speed in September
San Francisco Chimalpa, Mexico
- Average wind speed in September: 6.6km/h
The windiest month (with the highest average wind speed) is March (7.8km/h).
The calmest month (with the lowest average wind speed) is July (6.1km/h).
Average humidity in September
San Francisco Chimalpa, Mexico
- Average humidity in September: 79%
The month with the highest relative humidity is September (79%).
The month with the lowest relative humidity is April (43%).
Average rainfall in September
San Francisco Chimalpa, Mexico
- Average rainfall in September: 62mm
The wettest month (with the highest rainfall) is July (110mm).
The driest month (with the least rainfall) is December (4mm).
Average rainfall days in September
San Francisco Chimalpa, Mexico
- Average rainfall days in September: 19.6 days
The month with the highest number of rainy days is July (24.8 days).
The month with the least rainy days is December (3.1 days).
Average snowfall days in September
San Francisco Chimalpa, Mexico
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January and December (0.1 days).
The months with the least snowfall days are February, March, April, May, June, July, August, September, October and November (0 days).
Average daylight in September /
Average sunshine in September
San Francisco Chimalpa, 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: 11h and 0min).
- Average sunshine in September: 8h and 5min
The months with the most sunshine are May and June (Average sunshine: 10h and 30min).
The month with the least sunshine is November (Average sunshine: 7h and 48min).
Average sunshine days in September
San Francisco Chimalpa, Mexico
- Average sunshine days in September: 7.5 days
The month with the most sunshine days is December (23.2 days).
The month with the least sunshine days is July (3.7 days).
Average UV index in September
San Francisco Chimalpa, Mexico
- Average UV index in September: 4
The months with the highest UV index are February, March, April and May (UV index 5).
The months with the lowest UV index are January, June, July, August, September, October, November and December (UV index 4).
Average cloud cover in September
San Francisco Chimalpa, Mexico
- Average cloud cover in September: 43
The month with the most cloud cover is September (Cloud cover 43).
The months with the least cloud cover are February and March (Cloud cover 12).
Average visibility in September
San Francisco Chimalpa, 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, September and October (8km).
San Francisco Chimalpa, Mexico
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