September weather forecast
Tlapacoya, Mexico

September

Weather in September

September, the first month of the autumn in Tlapacoya, is still a pleasant month, with an average temperature fluctuating between 11.2°C (52.2°F) and 20.5°C (68.9°F).

Temperature

September commences with an average high-temperature of a still agreeable 20.5°C (68.9°F), showing little deviation from August's 21.7°C (71.1°F). An average low-temperature of 11.2°C (52.2°F) is noted during the nights in September in Tlapacoya.

Humidity

September is the most humid month in Tlapacoya, with an average relative humidity of 80%.

Rainfall

In September, the rain falls for 27.5 days. Throughout September, 174mm (6.85") of precipitation is accumulated. In Tlapacoya, during the entire year, the rain falls for 195.2 days and collects up to 1088mm (42.83") of precipitation.

Daylight

The average length of the day in September is 12h and 14min.
On the first day of the month, sunrise is at 6:21 am and sunset at 6:51 pm. On the last day of September, in Tlapacoya, sunrise is at 6:27 am and sunset at 6:25 pm CST.

Sunshine

In Tlapacoya, the average sunshine in September is 9h.

UV index

January, August through December, with an average maximum UV index of 4, are months with the lowest UV index. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for the ordinary person.
Note: The UV index of 4 during September translates into the following guidance:
Take precautions - Protection against sun damage is advised. The solar radiation around mid-day is intense; avoid the Sun and stay safe. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.

Frequently asked questions

What is the average September temperature in Tlapacoya?
September temperatures in Tlapacoya, Mexico, vary between a high-temperature of 20.5°C (68.9°F) and a low-temperature of 11.2°C (52.2°F).
What is the most humid month in Tlapacoya?
With an average relative humidity of 80%, September is the most humid month in Tlapacoya.
What is the average humidity in September in Tlapacoya?
In Tlapacoya, the average relative humidity in September is 80%.
How much does it rain in Tlapacoya in September?
In Tlapacoya, Mexico, during September, the rain falls for 27.5 days and regularly aggregates up to 174mm (6.85") of precipitation.
How many hours of daylight does Tlapacoya have in September?
The average day length in September in Tlapacoya is 12h and 14min.
What time are sunrise and sunset in September in Tlapacoya?
In September, on the first day of the month, sunrise is at 6:21 am and sunset at 6:51 pm. On the last day of the month, in Tlapacoya, sunrise is at 6:27 am and sunset at 6:25 pm CST.
How long on average sun shines in September in Tlapacoya?
The average sunshine duration in September in Tlapacoya, Mexico, is 9h.
What is the month with the lowest UV index in Tlapacoya?
The months with the lowest UV index in Tlapacoya are January, August through December, with an average maximum UV index of 4.
What is the UV index reading in September in Tlapacoya?
The average daily maximum UV index in September in Tlapacoya, Mexico, is 4. A UV Index estimate of 3 to 5 represents a moderate health threat from unprotected exposure to 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
Tlapacoya, Mexico
  • Average high temperature in September: 20.5°C

The warmest month (with the highest average high temperature) is April (25.3°C).
The month with the lowest average high temperature is January (19.3°C).

  • Average low temperature in September: 11.2°C

The month with the highest average low temperature is May (13°C).
The coldest month (with the lowest average low temperature) is January (6.8°C).

Average pressure in September
Tlapacoya, 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 (1014.2mbar).

Average wind speed in September
Tlapacoya, Mexico
  • Average wind speed in September: 5.5km/h

The windiest months (with the highest average wind speed) are March and April (6.8km/h).
The calmest month (with the lowest average wind speed) is July (4.8km/h).

Average humidity in September
Tlapacoya, Mexico
  • Average humidity in September: 80%

The month with the highest relative humidity is September (80%).
The month with the lowest relative humidity is April (43%).

Average rainfall in September
Tlapacoya, Mexico
  • Average rainfall in September: 174mm

The wettest month (with the highest rainfall) is July (230mm).
The driest month (with the least rainfall) is December (5mm).

Average rainfall days in September
Tlapacoya, Mexico
  • Average rainfall days in September: 27.5 days

The months with the highest number of rainy days are July and August (29.7 days).
The month with the least rainy days is December (4.3 days).

Average daylight in September /
Average sunshine in September
Tlapacoya, 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: 9h and 0min

The month with the most sunshine is June (Average sunshine: 10h and 48min).
The month with the least sunshine is November (Average sunshine: 7h and 42min).

Average sunshine days in September
Tlapacoya, Mexico
  • Average sunshine days in September: 1.3 days

The month with the most sunshine days is December (24.9 days).
The months with the least sunshine days are July and August (0.5 days).

Average UV index in September
Tlapacoya, Mexico
  • Average UV index in September: 4

The months with the highest UV index are February, March, April, May, June and July (UV index 5).
The months with the lowest UV index are January, August, September, October, November and December (UV index 4).

Average cloud cover in September
Tlapacoya, Mexico
  • Average cloud cover in September: 37

The months with the most cloud cover are July and September (Cloud cover 37).
The months with the least cloud cover are February and December (Cloud cover 10).

Average visibility in September
Tlapacoya, Mexico
  • Average visibility in September: 8km

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

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