September weather forecast
San Simón Zahuatlán, Mexico

September

Weather in September

September, the first month of the autumn in San Simón Zahuatlán, is still a pleasant month, with temperature in the range of an average high of 22.3°C (72.1°F) and an average low of 13.2°C (55.8°F).

Temperature

San Simón Zahuatlán observes a minor difference in average high-temperatures between August's 23.7°C (74.7°F) and September's 22.3°C (72.1°F). During September, an average low-temperature of 13.2°C (55.8°F) is observed in San Simón Zahuatlán.

Humidity

The most humid month in San Simón Zahuatlán is September, with an average relative humidity of 81%.

Rainfall

In San Simón Zahuatlán, in September, during 26.6 rainfall days, 145mm (5.71") of precipitation is typically accumulated. In San Simón Zahuatlán, during the entire year, the rain falls for 185.5 days and collects up to 866mm (34.09") of precipitation.

Daylight

The average length of the day in September in San Simón Zahuatlán is 12h and 14min.
On the first day of the month, sunrise is at 6:17 am and sunset at 6:45 pm. On the last day of September, in San Simón Zahuatlán, sunrise is at 6:22 am and sunset at 6:21 pm CST.

Sunshine

In San Simón Zahuatlán, Mexico, the average sunshine in September is 8.9h.

UV index

The average daily maximum UV index in September in San Simón Zahuatlán is 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The daily high UV index of 5 during September translates into the following recommendations:
Exercise care. People with light skin might get burns in fewer than 30 minutes. The Sun's radiation is especially intense around midday; try to stay in shade during this period. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.

Frequently asked questions

What are the temperatures in San Simón Zahuatlán in September?
In September, the average high-temperature and low-temperature in San Simón Zahuatlán are 22.3°C (72.1°F) and 13.2°C (55.8°F) respectively. In April, the average heat index (a.k.a. 'feels like', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, is computed to be 28°C (82.4°F).
What is the most humid month in San Simón Zahuatlán?
With an average relative humidity of 81%, September is the most humid month.
What is the average humidity in September in San Simón Zahuatlán?
The average relative humidity in September in San Simón Zahuatlán, Mexico, is 81%.
How many days does it rain in September in San Simón Zahuatlán?
In September, in San Simón Zahuatlán, Mexico, the rain falls for 26.6 days. Throughout September, 145mm (5.71") of precipitation is accumulated.
How many hours of daylight does San Simón Zahuatlán have in September?
The average day length in September in San Simón Zahuatlán is 12h and 14min.
When are sunrise and sunset in September in San Simón Zahuatlán?
In September, on the first day of the month, sunrise is at 6:17 am and sunset at 6:45 pm. On the last day of the month, sunrise is at 6:22 am and sunset at 6:21 pm CST.
How many hours of sunshine does San Simón Zahuatlán have in September?
In September, the average sunshine duration in San Simón Zahuatlán is 8.9h.
What is the UV index intensity in September in San Simón Zahuatlán?
In September, the average daily maximum UV index in San Simón Zahuatlán, Mexico, is 5. A UV Index of 3 to 5 symbolizes a medium hazard to health from exposure to the Sun's UV radiation.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in September - San Simón Zahuatlán, Mexico
Average temperature in September
San Simón Zahuatlán, Mexico
  • Average high temperature in September: 22.3°C

The warmest month (with the highest average high temperature) is April (27.3°C).
The month with the lowest average high temperature is January (21.1°C).

  • Average low temperature in September: 13.2°C

The month with the highest average low temperature is May (14.5°C).
The coldest month (with the lowest average low temperature) is January (8.8°C).

Average pressure in September - San Simón Zahuatlán, Mexico
Average pressure in September
San Simón Zahuatlán, Mexico
  • Average pressure in September: 1014.8mbar

The month with the highest atmospheric pressure is January (1017.7mbar).
The month with the lowest atmospheric pressure is May (1013.8mbar).

Average wind speed in September - San Simón Zahuatlán, Mexico
Average wind speed in September
San Simón Zahuatlán, Mexico
  • Average wind speed in September: 6.7km/h

The windiest month (with the highest average wind speed) is January (8.7km/h).
The calmest months (with the lowest average wind speed) are June and September (6.7km/h).

Average humidity in September - San Simón Zahuatlán, Mexico
Average humidity in September
San Simón Zahuatlán, Mexico
  • Average humidity in September: 81%

The month with the highest relative humidity is September (81%).
The month with the lowest relative humidity is April (56%).

Average rainfall in September - San Simón Zahuatlán, Mexico
Average rainfall in September
San Simón Zahuatlán, Mexico
  • Average rainfall in September: 145mm

The wettest month (with the highest rainfall) is June (164mm).
The driest month (with the least rainfall) is December (3mm).

Average rainfall days in September - San Simón Zahuatlán, Mexico
Average rainfall days in September
San Simón Zahuatlán, Mexico
  • Average rainfall days in September: 26.6 days

The month with the highest number of rainy days is September (26.6 days).
The month with the least rainy days is December (4.5 days).

Average daylight in September / Average sunshine in September - San Simón Zahuatlán, Mexico
Average daylight in September /
Average sunshine in September
San Simón Zahuatlán, Mexico
  • Average daylight in September: 12h and 1min

The month with the longest days is June (Average daylight: 13h and 12min).
The month with the shortest days is December (Average daylight: 11h and 6min).

  • Average sunshine in September: 8h and 5min

The month with the most sunshine is May (Average sunshine: 10h and 48min).
The month with the least sunshine is November (Average sunshine: 7h and 36min).

Average sunshine days in September - San Simón Zahuatlán, Mexico
Average sunshine days in September
San Simón Zahuatlán, Mexico
  • Average sunshine days in September: 2 days

The month with the most sunshine days is December (22.2 days).
The months with the least sunshine days are August and September (2 days).

Average UV index in September - San Simón Zahuatlán, Mexico
Average UV index in September
San Simón Zahuatlán, 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, June, October, November and December (UV index 4).

Average cloud cover in September - San Simón Zahuatlán, Mexico
Average cloud cover in September
San Simón Zahuatlán, Mexico
  • Average cloud cover in September: 42

The month with the most cloud cover is September (Cloud cover 42).
The months with the least cloud cover are February, March and April (Cloud cover 15).

Average visibility in September - San Simón Zahuatlán, Mexico
Average visibility in September
San Simón Zahuatlán, Mexico
  • Average visibility in September: 8km

The months with the highest visibility are January, February, March, April, May, November and December (10km).
The month with the lowest visibility is September (8km).

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