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
September commences with an average high-temperature of a still agreeable 20.2°C (68.4°F), showing little deviation from August's 21.3°C (70.3°F). In the month of September, Santiago Acatlán witnesses a consistent average low-temperature of 11.1°C (52°F).Humidity
The most humid month is September, with an average relative humidity of 82%.Rainfall
In Santiago Acatlán, in September, during 26.8 rainfall days, 173mm (6.81") of precipitation is typically accumulated. Throughout the year, there are 210.9 rainfall days, and 1187mm (46.73") of precipitation is accumulated.Daylight
The average length of the day in September is 12h and 14min.On the first day of the month, sunrise is at 6:16 am and sunset at 6:46 pm. On the last day of September, in Santiago Acatlán, Mexico, sunrise is at 6:22 am and sunset at 6:20 pm CST.
Sunshine
In September, the average sunshine in Santiago Acatlán is 8.7h.UV index
The months with the lowest UV index in Santiago Acatlán are January, June, August through December, with an average maximum UV index of 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for average individuals.Note: The daily high UV index of 4 in September translates into this advice:
Put precautions into practice - Ensuring skin and eye safety is a necessity. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures in Santiago Acatlán?
What is the most humid month in Santiago Acatlán?
What is the average humidity in September in Santiago Acatlán?
How many days does it rain in September in Santiago Acatlán?
How many hours of daylight does Santiago Acatlán have in September?
When is the sunrise / sunset in September in Santiago Acatlán?
How long on average sun shines in September in Santiago Acatlán?
What are the months with the lowest UV index in Santiago Acatlán?
How high is the UV index in September in Santiago Acatlán?
Average temperature in September
Santiago Acatlán, Mexico
- Average high temperature in September: 20.2°C
The warmest month (with the highest average high temperature) is April (24.3°C).
The month with the lowest average high temperature is January (19°C).
- Average low temperature in September: 11.1°C
The month with the highest average low temperature is May (13.2°C).
The coldest month (with the lowest average low temperature) is January (7.1°C).
Average pressure in September
Santiago Acatlán, Mexico
- Average pressure in September: 1015.6mbar
The month with the highest atmospheric pressure is January (1018.7mbar).
The month with the lowest atmospheric pressure is May (1014.3mbar).
Average wind speed in September
Santiago Acatlán, Mexico
- Average wind speed in September: 7.2km/h
The windiest month (with the highest average wind speed) is March (9.9km/h).
The calmest months (with the lowest average wind speed) are June, July and September (7.2km/h).
Average humidity in September
Santiago Acatlán, Mexico
- Average humidity in September: 82%
The month with the highest relative humidity is September (82%).
The month with the lowest relative humidity is April (50%).
Average rainfall in September
Santiago Acatlán, Mexico
- Average rainfall in September: 173mm
The wettest month (with the highest rainfall) is July (202mm).
The driest month (with the least rainfall) is December (6mm).
Average rainfall days in September
Santiago Acatlán, Mexico
- Average rainfall days in September: 26.8 days
The month with the highest number of rainy days is August (29.2 days).
The month with the least rainy days is December (4.5 days).
Average daylight in September /
Average sunshine in September
Santiago Acatlán, 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 4min
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 30min).
Average sunshine days in September
Santiago Acatlán, Mexico
- Average sunshine days in September: 2.6 days
The month with the most sunshine days is December (23.8 days).
The month with the least sunshine days is July (0.8 days).
Average UV index in September
Santiago Acatlán, Mexico
- Average UV index in September: 4
The months with the highest UV index are February, March, April, May and July (UV index 5).
The months with the lowest UV index are January, June, August, September, October, November and December (UV index 4).
Average cloud cover in September
Santiago Acatlán, Mexico
- Average cloud cover in September: 42
The month with the most cloud cover is September (Cloud cover 42).
The month with the least cloud cover is December (Cloud cover 11).
Average visibility in September
Santiago Acatlán, Mexico
- Average visibility in September: 9km
The months with the highest visibility are January, February, March, April, November and December (10km).
The months with the lowest visibility are May, June, July, August, September and October (9km).
