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
Santiago Atitlán experiences an average high-temperature of a still pleasant 21.1°C (70°F) in September, subtly different from August's 22.2°C (72°F). Santiago Atitlán throughout September, experiences an average nighttime temperature of 13°C (55.4°F).Humidity
September is the most humid month, with an average relative humidity of 86%.Rainfall
In Santiago Atitlán, during September, the rain falls for 28.8 days and regularly aggregates up to 200mm (7.87") of precipitation. Throughout the year, there are 222.9 rainfall days, and 1066mm (41.97") of precipitation is accumulated.Daylight
In September, the average length of the day in Santiago Atitlán, Mexico, is 12h and 14min.On the first day of September, sunrise is at 6:10 am and sunset at 6:36 pm. On the last day of the month, sunrise is at 6:13 am and sunset at 6:13 pm CST.
Sunshine
In September, the average sunshine is 8.3h.UV index
The months with the highest UV index are February through September, with an average maximum UV index of 5. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: In September, the maximum UV index of 5 suggests this advice:
Guard yourself - Avoiding sunburn is suggested. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.
Frequently asked questions
What is the temperature in September in Santiago Atitlán?
What is the most humid month in Santiago Atitlán?
What is the average humidity in September in Santiago Atitlán?
How much does it rain in Santiago Atitlán in September?
How many hours of daylight does Santiago Atitlán have in September?
When is the sunrise / sunset in September in Santiago Atitlán?
How many hours of sunshine does Santiago Atitlán have in September?
What is the month with the highest UV index in Santiago Atitlán?
What is the UV index reading in September in Santiago Atitlán?
Average temperature in September
Santiago Atitlán, Mexico
- Average high temperature in September: 21.1°C
The warmest month (with the highest average high temperature) is April (26.8°C).
The month with the lowest average high temperature is November (20.6°C).
- Average low temperature in September: 13°C
The month with the highest average low temperature is June (13.3°C).
The coldest month (with the lowest average low temperature) is January (7.8°C).
Average pressure in September
Santiago Atitlán, Mexico
- Average pressure in September: 1013.6mbar
The month with the highest atmospheric pressure is January (1017.1mbar).
The month with the lowest atmospheric pressure is May (1012.9mbar).
Average wind speed in September
Santiago Atitlán, Mexico
- Average wind speed in September: 5.5km/h
The windiest month (with the highest average wind speed) is November (7.3km/h).
The calmest months (with the lowest average wind speed) are May and June (5.3km/h).
Average humidity in September
Santiago Atitlán, Mexico
- Average humidity in September: 86%
The month with the highest relative humidity is September (86%).
The month with the lowest relative humidity is April (62%).
Average rainfall in September
Santiago Atitlán, Mexico
- Average rainfall in September: 200mm
The wettest month (with the highest rainfall) is June (203mm).
The driest month (with the least rainfall) is December (5mm).
Average rainfall days in September
Santiago Atitlán, Mexico
- Average rainfall days in September: 28.8 days
The month with the highest number of rainy days is September (28.8 days).
The month with the least rainy days is February (7 days).
Average daylight in September /
Average sunshine in September
Santiago Atitlán, Mexico
- Average daylight in September: 12h and 1min
The month with the longest days is June (Average daylight: 13h and 6min).
The month with the shortest days is December (Average daylight: 11h and 6min).
- Average sunshine in September: 8h and 2min
The month with the most sunshine is May (Average sunshine: 10h and 42min).
The month with the least sunshine is November (Average sunshine: 7h and 24min).
Average sunshine days in September
Santiago Atitlán, Mexico
- Average sunshine days in September: 0.4 days
The month with the most sunshine days is December (18.5 days).
The month with the least sunshine days is September (0.4 days).
Average UV index in September
Santiago Atitlán, Mexico
- Average UV index in September: 5
The months with the highest UV index are February, March, April, May, June, July, August and September (UV index 5).
The months with the lowest UV index are January, October, November and December (UV index 4).
Average cloud cover in September
Santiago Atitlán, Mexico
- Average cloud cover in September: 54
The month with the most cloud cover is September (Cloud cover 54).
The month with the least cloud cover is March (Cloud cover 21).
Average visibility in September
Santiago Atitlán, Mexico
- Average visibility in September: 7km
The months with the highest visibility are January, February, March, April and May (9km).
The months with the lowest visibility are July, August, September, October and November (7km).
Santiago Atitlán, Mexico
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