September weather forecast
San Martín Zacatepec, Mexico

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Weather in September

September, the first month of the autumn in San Martín Zacatepec, is also an agreeable month, with an average temperature varying between 22.3°C (72.1°F) and 13.2°C (55.8°F).

Temperature

In San Martín Zacatepec, September's average high-temperature stands at an agreeable 22.3°C (72.1°F), closely related to the preceding month. San Martín Zacatepec records a steady low-temperature average of 13.2°C (55.8°F) during September.

Humidity

September is the most humid month, with an average relative humidity of 81%.

Rainfall

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

Daylight

In San Martín Zacatepec, the average length of the day in September is 12h and 14min.
On the first day of the month, sunrise is at 6:18 am and sunset at 6:45 pm. On the last day of September, sunrise is at 6:22 am and sunset at 6:21 pm CST.

Sunshine

The average sunshine in September is 8.9h.

UV index

In September, the average daily maximum UV index in San Martín Zacatepec is 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for the average person.
Note: An average UV index of 5 in September transforms into this advice:
Ensure safety - Sun damage prevention is strongly urged. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear.
Updated: Feb 9, 2024 | Published by: Weather Atlas | About Us / Weather Forecasting / Data Sources

Frequently asked questions

What is the temperature in September in San Martín Zacatepec?

In San Martín Zacatepec, in September, the average high-temperature is 22.3°C (72.1°F), and the average low-temperature is 13.2°C (55.8°F). In April, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which combines air temperature and relative humidity, is estimated at 28°C (82.4°F).

What is the most humid month in San Martín Zacatepec?

With an average relative humidity of 81%, September is the most humid month in San Martín Zacatepec.

What is the average humidity in September in San Martín Zacatepec?

The average relative humidity in September in San Martín Zacatepec is 81%.

How much does it rain in San Martín Zacatepec in September?

In September, in San Martín Zacatepec, Mexico, the rain falls for 26.6 days. Throughout September, 145mm (5.71") of precipitation is accumulated.

How many hours of daylight does San Martín Zacatepec have in September?

In San Martín Zacatepec, Mexico, the average day length in September is 12h and 14min.

What time are sunrise and sunset in September in San Martín Zacatepec?

In September, on the first day of the month, sunrise is at 6:18 am and sunset at 6:45 pm. On the last day of the month, in San Martín Zacatepec, Mexico, sunrise is at 6:22 am and sunset at 6:21 pm CST.

How long on average sun shines in September in San Martín Zacatepec?

The average sunshine duration in September in San Martín Zacatepec is 8.9h.

What is the UV index intensity in September in San Martín Zacatepec?

The average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a moderate health threat from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
San Martín Zacatepec, Mexico

Average temperature in September - San Martín Zacatepec, 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 Martín Zacatepec, Mexico

Average pressure in September - San Martín Zacatepec, 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 Martín Zacatepec, Mexico

Average wind speed in September - San Martín Zacatepec, 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 Martín Zacatepec, Mexico

Average humidity in September - San Martín Zacatepec, 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 Martín Zacatepec, Mexico

Average rainfall in September - San Martín Zacatepec, 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 Martín Zacatepec, Mexico

Average rainfall days in September - San Martín Zacatepec, 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 Martín Zacatepec, Mexico

Average daylight in September / Average sunshine in September - San Martín Zacatepec, 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 Martín Zacatepec, Mexico

Average sunshine days in September - San Martín Zacatepec, 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 Martín Zacatepec, Mexico

Average UV index in September - San Martín Zacatepec, 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 Martín Zacatepec, Mexico

Average cloud cover in September - San Martín Zacatepec, 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 Martín Zacatepec, Mexico

Average visibility in September - San Martín Zacatepec, 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).

San Martín Zacatepec, Mexico

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