December weather forecast
San Jerónimo Xayacatlán, Mexico

December

Weather in December

The first month of the winter, December, is also a moderately hot month in San Jerónimo Xayacatlán, Mexico, with an average temperature fluctuating between 25.3°C (77.5°F) and 12.5°C (54.5°F).

Temperature

During December, the average high-temperature is a still moderately hot 25.3°C (77.5°F), maintaining a close resemblance to that of the preceding month. With a significant daily temperature differential, San Jerónimo Xayacatlán's nighttime temperature in December falls to an average of 12.5°C (54.5°F).

Humidity

In San Jerónimo Xayacatlán, Mexico, the average relative humidity in December is 56%.

Rainfall

December is the only month when rain does not fall.

Daylight

The month with the shortest days is December, with an average of 11h and 6min of daylight.
On the first day of the month, sunrise is at 6:47 am and sunset at 5:54 pm. On the last day of December, in San Jerónimo Xayacatlán, sunrise is at 7:03 am and sunset at 6:06 pm CST.

Sunshine

In San Jerónimo Xayacatlán, the average sunshine in December is 8.6h.

UV index

The months with the lowest UV index in San Jerónimo Xayacatlán, Mexico, are January, August, October through December, with an average maximum UV index of 5. A UV Index estimate of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In December, the maximum UV index of 5 translates into these guidelines:
Be vigilant - Suggestions to stave off sun damage are provided. The Sun's radiation is especially intense around midday; try to stay in shade during this period. To cut down UV radiation exposure by about half, sport a wide-brim hat.

Frequently asked questions

What is the usual temperature for San Jerónimo Xayacatlán in December?
The high-temperature during December is 25.3°C (77.5°F) and the low-temperature is 12.5°C (54.5°F). In August, the average heat index (a.k.a. 'felt air temperature', 'feels like'), which factors the actual air temperature with the relative humidity, is evaluated at 29°C (84.2°F).
What is the average humidity in December in San Jerónimo Xayacatlán?
In San Jerónimo Xayacatlán, Mexico, the average relative humidity in December is 56%.
What is the driest month in San Jerónimo Xayacatlán?
The only month without rainfall in San Jerónimo Xayacatlán, Mexico, is December.
Does it rain in San Jerónimo Xayacatlán in December?
In December, in San Jerónimo Xayacatlán, Mexico, it doesn't rain. November is the latest month when it rains.
What is the month with the shortest days in San Jerónimo Xayacatlán?
December has the shortest days of the year in San Jerónimo Xayacatlán, with an average of 11h and 6min of daylight.
How many hours of daylight does San Jerónimo Xayacatlán have in December?
In December, the average day length in San Jerónimo Xayacatlán, Mexico, is 11h and 4min.
When are sunrise and sunset in December in San Jerónimo Xayacatlán?
In December, on the first day of the month, sunrise is at 6:47 am and sunset at 5:54 pm. On the last day of the month, in San Jerónimo Xayacatlán, Mexico, sunrise is at 7:03 am and sunset at 6:06 pm CST.
How many hours of sunshine does San Jerónimo Xayacatlán have in December?
In December, the average sunshine duration is 8.6h.
What are the months with the lowest UV index in San Jerónimo Xayacatlán?
January, August, October through December, with an average maximum UV index of 5, are months with the lowest UV index in San Jerónimo Xayacatlán.
How high is the UV index in December in San Jerónimo Xayacatlán?
The average daily maximum UV index in December in San Jerónimo Xayacatlán is 5. A UV Index estimate of 3 to 5 represents a moderate vulnerability 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 December
San Jerónimo Xayacatlán, Mexico
  • Average high temperature in December: 25.3°C

The warmest month (with the highest average high temperature) is April (30.9°C).
The month with the lowest average high temperature is January (24.9°C).

  • Average low temperature in December: 12.5°C

The month with the highest average low temperature is May (18.8°C).
The coldest month (with the lowest average low temperature) is January (12.1°C).

Average pressure in December
San Jerónimo Xayacatlán, Mexico
  • Average pressure in December: 1017.3mbar

The month with the highest atmospheric pressure is January (1017.9mbar).
The month with the lowest atmospheric pressure is May (1014.1mbar).

Average wind speed in December
San Jerónimo Xayacatlán, Mexico
  • Average wind speed in December: 8.3km/h

The windiest month (with the highest average wind speed) is March (9.5km/h).
The calmest month (with the lowest average wind speed) is September (6.1km/h).

Average humidity in December
San Jerónimo Xayacatlán, Mexico
  • Average humidity in December: 56%

The month with the highest relative humidity is September (74%).
The month with the lowest relative humidity is April (43%).

Average rainfall in December
San Jerónimo Xayacatlán, Mexico
  • Average rainfall in December: 0mm

The wettest month (with the highest rainfall) is June (149mm).
The driest month (with the least rainfall) is December (0mm).

Average rainfall days in December
San Jerónimo Xayacatlán, Mexico
  • Average rainfall days in December: 0.5 days

The month with the highest number of rainy days is September (24.5 days).
The month with the least rainy days is December (0.5 days).

Average daylight in December /
Average sunshine in December
San Jerónimo Xayacatlán, Mexico
  • Average daylight in December: 11h 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 December: 8h and 4min

The month with the most sunshine is June (Average sunshine: 11h and 6min).
The month with the least sunshine is November (Average sunshine: 7h and 42min).

Average sunshine days in December
San Jerónimo Xayacatlán, Mexico
  • Average sunshine days in December: 30.4 days

The month with the most sunshine days is December (30.4 days).
The month with the least sunshine days is September (3 days).

Average UV index in December
San Jerónimo Xayacatlán, Mexico
  • Average UV index in December: 5

The month with the highest UV index is April (UV index 7).
The months with the lowest UV index are January, August, October, November and December (UV index 5).

Average cloud cover in December
San Jerónimo Xayacatlán, Mexico
  • Average cloud cover in December: 9

The month with the most cloud cover is September (Cloud cover 33).
The months with the least cloud cover are March and December (Cloud cover 9).

Average visibility in December
San Jerónimo Xayacatlán, Mexico
  • Average visibility in December: 10km

The months with the highest visibility are January, February, March, April, May, June, October, November and December (10km).
The months with the lowest visibility are July, August and September (9km).

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