San Cristóbal de las Casas
Mexico
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
San Cristóbal de las Casas, Mexico

Dramatic skyline over a street in San Cristobal de las Casas in Mexico, with rows of cars and houses on the ancient cobblestoned streets
Dramatic skyline over a street in San Cristobal de las Casas in Mexico, with rows of cars and houses on the ancient cobblestoned streets
The first month of the autumn, September, is also an agreeable month in San Cristóbal de las Casas, Mexico, with average temperature varying between 11.2°C (52.2°F) and 21.7°C (71.1°F).

Temperature

In San Cristóbal de las Casas, the average high-temperature is practically the same as in August - a still agreeable 21.7°C (71.1°F). The average low-temperature, in September, is 11.2°C (52.2°F).

Humidity

Months with the highest humidity are January, September through December, with an average relative humidity of 80%.

Rainfall

In September, in San Cristóbal de las Casas, the rain falls for 19.7 days. Throughout September, 215.4mm (8.5") of precipitation is accumulated. Throughout the year, there are 111.4 rainfall days, and 1084.7mm (42.7") of precipitation is accumulated.

Daylight

In September, the average length of the day in San Cristóbal de las Casas is 12.2h.

Sunshine

September has the least sunshine of the year in San Cristóbal de las Casas, with an average of 3.9h of sunshine.

UV index

Months with the highest UV index are March through September, with an average maximum UV index of 12. A UV Index of 11, and more, symbolizes an extreme health hazard from the exposure to the Sun's UV rays for ordinary individuals.
The daily maximum UV index of 12 interpret into the following advice:
Practice all-important precautions. Light skin people may get burned in less than 5 minutes. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.

What is the temperature in September in San Cristóbal de las Casas?

The average high-temperature, in September, is 21.7°C (71.1°F), while the average low-temperature is 11.2°C (52.2°F).

What are the most humid months in San Cristóbal de las Casas?

January, September through December, with an average relative humidity of 80%, are most humid months in San Cristóbal de las Casas.

What is the average humidity in September in San Cristóbal de las Casas?

In San Cristóbal de las Casas, the average relative humidity in September is 80%.

How much does it rain in San Cristóbal de las Casas in September?

In San Cristóbal de las Casas, in September, during 19.7 rainfall days, 215.4mm (8.5") of precipitation is typically accumulated.

What is the average length of the day in September in San Cristóbal de las Casas?

In September, the average length of the day is 12.2h.

What is the month with the least sunshine in San Cristóbal de las Casas?

September has the least sunshine of the year in San Cristóbal de las Casas, Mexico, with an average of 3.9h of sunshine.

How many hours of sunshine does San Cristóbal de las Casas have in September?

In San Cristóbal de las Casas, Mexico, the average sunshine in September is 3.9h.

What is the month with the highest UV index in San Cristóbal de las Casas?

March through September, with an average maximum UV index of 12, are months with the highest UV index in San Cristóbal de las Casas, Mexico.

What is the UV index intensity in September in San Cristóbal de las Casas?

In San Cristóbal de las Casas, the average daily maximum UV index in September is 12. A UV Index value of 11, and more, symbolizes an extreme health vulnerability from the exposure to the Sun's UV rays.
Average temperature in September - San Cristóbal de las Casas, Mexico
  • Average high temperature in September: 21.7°C

The warmest month (with the highest average high temperature) is April (23.5°C).
The month with the lowest average high temperature is December (19.9°C).

  • Average low temperature in September: 11.2°C

The month with the highest average low temperature is June (11.5°C).
The coldest month (with the lowest average low temperature) is January (4.2°C).

Average humidity in September - San Cristóbal de las Casas, Mexico
  • Average humidity in September: 80%

Months with the highest relative humidity are January, September, October, November and December (80%).
The month with the lowest relative humidity is April (76%).

Average rainfall in September - San Cristóbal de las Casas, Mexico
  • Average rainfall in September: 215.4mm

The wettest month (with the highest rainfall) is June (226.3mm).
The driest month (with the lowest rainfall) is January (9mm).

Average rainfall days in September - San Cristóbal de las Casas, Mexico
  • Average rainfall days in September: 19.7 days

The month with the highest number of rainy days is September (19.7 days).
Months with the lowest number of rainy days are March and December (2.3 days).

Average daylight in September / Average sunshine in September - San Cristóbal de las Casas, Mexico
  • Average daylight in September: 12.2h

The month with the longest days is June (Average daylight: 13.1h).
The month with shortest days is December (Average daylight: 11.1h).

  • Average sunshine in September: 3.9h

The month with most sunshine is February (Average sunshine: 7.1h).
The month with least sunshine is September (Average sunshine: 3.9h).

Average UV index in September - San Cristóbal de las Casas, Mexico
  • Average UV index in September: 12

Months with the highest UV index are March, April, May, June, July, August and September (UV index 12).
Months with the lowest UV index are January and December (UV index 9).