December weather forecast
San Bartolo Yautepec, Mexico

December

Weather in December

The first month of the winter, December, is still a warm month in San Bartolo Yautepec, Mexico, with an average temperature varying between 27.6°C (81.7°F) and 20.6°C (69.1°F).

Temperature

During December, San Bartolo Yautepec records an average high-temperature of a still moderately hot 27.6°C (81.7°F), marking a slight divergence from November's 28.1°C (82.6°F). Throughout December nights, San Bartolo Yautepec experiences a consistent temperature average of 20.6°C (69.1°F).

Heat index

The heat index in December is estimated at a hot 30°C (86°F). Continuous exposure and activity could induce a sense of tiredness and subsequently, heat cramps.
It is noted that heat index values are ascertained for locations in the shade and with gentle breezes. When under direct sunshine, the heat index may be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', melds the effects of warmth and moisture to generate a feeling of heat. Additional elements including metabolic differences, the level of physical activity, and attire have a role in shaping the individual's temperature perception. By being directly under the sun, it's possible for the felt temperature to increase by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Kids are usually more vulnerable than adults, given their lesser sweating ability. Along with their larger skin surface relative to their small stature and the excess heat due to their activity, their risk is amplified.

Humidity

In December, the average relative humidity in San Bartolo Yautepec is 68%.

Rainfall

In San Bartolo Yautepec, in December, during 4.8 rainfall days, 6mm (0.24") of precipitation is typically accumulated. In San Bartolo Yautepec, Mexico, during the entire year, the rain falls for 208.9 days and collects up to 1221mm (48.07") of precipitation.

Daylight

December has the shortest days of the year, with an average of 11h and 12min of daylight.
On the first day of December in San Bartolo Yautepec, sunrise is at 6:36 am and sunset at 5:49 pm. On the last day of the month, sunrise is at 6:52 am and sunset at 6:02 pm CST.

Sunshine

In December, the average sunshine is 8.2h.

UV index

January through March, May, June, August through December, with an average maximum UV index of 6, are months with the lowest UV index in San Bartolo Yautepec. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for the ordinary person.
Note: The maximum daily UV index, 6 in December, converts into the following recommendations:
Sustain precautions and conform to sun safety norms. Preventing sunburn is necessary. 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. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.

Frequently asked questions

What is the average December temperature in San Bartolo Yautepec?
During December, San Bartolo Yautepec experiences an average high-temperature of 27.6°C (81.7°F) and a low-temperature of 20.6°C (69.1°F). In December, the average heat index (a.k.a. 'apparent temperature', 'real feel'), which represents the influence of relative humidity on air temperature, is estimated at 30°C (86°F).
What is the average humidity in December in San Bartolo Yautepec?
The average relative humidity in December in San Bartolo Yautepec is 68%.
How much does it rain in San Bartolo Yautepec in December?
In San Bartolo Yautepec, Mexico, in December, it is raining for 4.8 days, with typically 6mm (0.24") of accumulated precipitation.
What is the month with the shortest days in San Bartolo Yautepec?
The month with the shortest days in San Bartolo Yautepec, Mexico, is December, with an average of 11h and 12min of daylight.
How many hours of daylight does San Bartolo Yautepec have in December?
The average day length in December is 11h and 10min.
What time are sunrise and sunset in December in San Bartolo Yautepec?
In December, on the first day of the month, sunrise is at 6:36 am and sunset at 5:49 pm. On the last day of the month, in San Bartolo Yautepec, sunrise is at 6:52 am and sunset at 6:02 pm CST.
How many hours of sunshine does San Bartolo Yautepec have in December?
In San Bartolo Yautepec, the average sunshine duration in December is 8.2h.
What is the month with the lowest UV index in San Bartolo Yautepec?
The months with the lowest UV index in San Bartolo Yautepec are January through March, May, June, August through December, with an average maximum UV index of 6.
How high is the UV index in December in San Bartolo Yautepec?
The average daily maximum UV index in December in San Bartolo Yautepec is 6. A UV Index of 6 to 7 symbolizes a high health risk 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 Bartolo Yautepec, Mexico
  • Average high temperature in December: 27.6°C

The warmest month (with the highest average high temperature) is April (29.6°C).
The month with the lowest average high temperature is September (26.9°C).

  • Average low temperature in December: 20.6°C

The month with the highest average low temperature is May (23.8°C).
The coldest month (with the lowest average low temperature) is January (20.4°C).

Average pressure in December
San Bartolo Yautepec, Mexico
  • Average pressure in December: 1013.6mbar

The month with the highest atmospheric pressure is January (1014.3mbar).
The month with the lowest atmospheric pressure is May (1011.3mbar).

Average wind speed in December
San Bartolo Yautepec, Mexico
  • Average wind speed in December: 7.8km/h

The windiest month (with the highest average wind speed) is April (9.3km/h).
The calmest month (with the lowest average wind speed) is October (7.3km/h).

Average humidity in December
San Bartolo Yautepec, Mexico
  • Average humidity in December: 68%

The month with the highest relative humidity is September (80%).
The months with the lowest relative humidity are January and March (64%).

Average rainfall in December
San Bartolo Yautepec, Mexico
  • Average rainfall in December: 6mm

The wettest month (with the highest rainfall) is September (254mm).
The driest month (with the least rainfall) is January (4mm).

Average rainfall days in December
San Bartolo Yautepec, Mexico
  • Average rainfall days in December: 4.8 days

The month with the highest number of rainy days is August (30.3 days).
The month with the least rainy days is February (3.4 days).

Average daylight in December /
Average sunshine in December
San Bartolo Yautepec, Mexico
  • Average daylight in December: 11h and 1min

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

  • Average sunshine in December: 8h and 1min

The month with the most sunshine is May (Average sunshine: 11h and 6min).
The month with the least sunshine is November (Average sunshine: 7h and 36min).

Average sunshine days in December
San Bartolo Yautepec, Mexico
  • Average sunshine days in December: 23.1 days

The month with the most sunshine days is January (24.8 days).
The months with the least sunshine days are August and September (0.1 days).

Average UV index in December
San Bartolo Yautepec, Mexico
  • Average UV index in December: 6

The months with the highest UV index are April and July (UV index 7).
The months with the lowest UV index are January, February, March, May, June, August, September, October, November and December (UV index 6).

Average cloud cover in December
San Bartolo Yautepec, Mexico
  • Average cloud cover in December: 9

The months with the most cloud cover are June and September (Cloud cover 38).
The month with the least cloud cover is February (Cloud cover 8).

Average visibility in December
San Bartolo Yautepec, 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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