December weather forecast
Jalcocotán, Mexico

December

Weather in December

The first month of the winter, December, is also a moderately hot month in Jalcocotán, Mexico, with an average temperature fluctuating between 27.1°C (80.8°F) and 13.7°C (56.7°F).

Temperature

With average high and low temperatures of 27.1°C (80.8°F) and 13.7°C (56.7°F) respectively, December is Jalcocotán's coldest month.

Heat index

The heat index value during December is appraised at 29°C (84.2°F). If one continues to be active during enduring exposure, it could result in fatigue and heat cramps.
Realize that the values for the heat index are set for shaded places and light winds. An exposure to direct sunlight may lift the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is found by incorporating humidity levels into the air temperature measurement. The effect of weather is individual, with a variety of people experiencing it differently due to distinctions in body mass, height, and level of activity. In the direct sunlight, the weather's impact can be amplified, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Typically, children face more danger than adults as they usually perspire less. Their larger skin surface relative to their small bodies and increased heat output from their activities enhance their risk.

Humidity

In December, the average relative humidity is 67%.

Rainfall

In December, the rain falls for 5.9 days. Throughout December, 33mm (1.3") of precipitation is accumulated. Throughout the year, there are 164.8 rainfall days, and 1589mm (62.56") of precipitation is accumulated.

Daylight

December has the shortest days of the year, with an average of 10h and 54min of daylight.
On the first day of the month, sunrise is at 6:22 am and sunset at 5:17 pm. On the last day of December, sunrise is at 6:38 am and sunset at 5:29 pm MST.

Sunshine

The months with the least sunshine are January, November and December, with an average of 7.3h of sunshine.

UV index

The months with the lowest UV index are January and December, with an average maximum UV index of 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for average individuals.
Note: A maximum daily UV index of 5 during December morphs into the following directions:
Be careful. Light complexion individuals might get burns in fewer than 30 minutes. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.

Frequently asked questions

What is the coldest month in Jalcocotán?
Jalcocotán's December weather, with an average high temperature of 27.1°C (80.8°F) and an average low temperature of 13.7°C (56.7°F), tends to be the coldest of the year.
What is the temperature in December in Jalcocotán?
December temperatures vary between a high-temperature of 27.1°C (80.8°F) and a low-temperature of 13.7°C (56.7°F). The average heat index (a.k.a. 'apparent temperature', 'feels like'), which represents the influence of relative humidity on air temperature, in December is appraised at 29°C (84.2°F).
What is the average humidity in December?
In Jalcocotán, the average relative humidity in December is 67%.
How much does it rain in December?
In Jalcocotán, in December, it is raining for 5.9 days, with typically 33mm (1.3") of accumulated precipitation.
What is the month with the shortest days?
With an average of 10h and 54min of daylight, December has the shortest days of the year.
How many hours of daylight does Jalcocotán have in December?
The average day length in December in Jalcocotán is 10h and 51min.
When is the sunrise / sunset in December in Jalcocotán?
In December, on the first day of the month, sunrise is at 6:22 am and sunset at 5:17 pm. On the last day of the month, sunrise is at 6:38 am and sunset at 5:29 pm MST.
What are the months with the least sunshine in Jalcocotán?
January, November and December, with an average of 7.3h of sunshine, are months with the least sunshine.
How long on average sun shines in December?
In December, the average sunshine duration is 7.3h.
What is the month with the lowest UV index?
The months with the lowest UV index are January and December, with an average maximum UV index of 5.
How high is the UV index in December?
In Jalcocotán, Mexico, the average daily maximum UV index in December is 5. A UV Index of 3 to 5 symbolizes a medium hazard to health from unsafe exposure to Sun's UV rays.
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
Jalcocotán, Mexico
  • Average high temperature in December: 27.1°C

The warmest month (with the highest average high temperature) is May (33.1°C).
The month with the lowest average high temperature is December (27.1°C).

  • Average low temperature in December: 13.7°C

The month with the highest average low temperature is August (20.7°C).
The coldest month (with the lowest average low temperature) is February (13.3°C).

Average pressure in December
Jalcocotán, Mexico
  • Average pressure in December: 1015.1mbar

The month with the highest atmospheric pressure is January (1015.6mbar).
The month with the lowest atmospheric pressure is June (1011.7mbar).

Average wind speed in December
Jalcocotán, Mexico
  • Average wind speed in December: 5.5km/h

The windiest month (with the highest average wind speed) is April (6.8km/h).
The calmest months (with the lowest average wind speed) are August and September (4.6km/h).

Average humidity in December
Jalcocotán, Mexico
  • Average humidity in December: 67%

The months with the highest relative humidity are August and September (86%).
The months with the lowest relative humidity are March and April (55%).

Average rainfall in December
Jalcocotán, Mexico
  • Average rainfall in December: 33mm

The wettest month (with the highest rainfall) is August (415mm).
The driest month (with the least rainfall) is April (1mm).

Average rainfall days in December
Jalcocotán, Mexico
  • Average rainfall days in December: 5.9 days

The month with the highest number of rainy days is August (30.3 days).
The month with the least rainy days is April (1 days).

Average daylight in December /
Average sunshine in December
Jalcocotán, Mexico
  • Average daylight in December: 10h and 5min

The month with the longest days is June (Average daylight: 13h and 24min).
The month with the shortest days is December (Average daylight: 10h and 54min).

  • Average sunshine in December: 7h and 2min

The month with the most sunshine is May (Average sunshine: 11h and 48min).
The months with the least sunshine are January, November and December (Average sunshine: 7h and 18min).

Average sunshine days in December
Jalcocotán, Mexico
  • Average sunshine days in December: 24.7 days

The month with the most sunshine days is April (29.3 days).
The month with the least sunshine days is August (0.3 days).

Average UV index in December
Jalcocotán, Mexico
  • Average UV index in December: 5

The months with the highest UV index are February, March, April, May, June, July, August, September, October and November (UV index 6).
The months with the lowest UV index are January and December (UV index 5).

Average cloud cover in December
Jalcocotán, Mexico
  • Average cloud cover in December: 19

The month with the most cloud cover is August (Cloud cover 62).
The month with the least cloud cover is March (Cloud cover 13).

Average visibility in December
Jalcocotán, Mexico
  • Average visibility in December: 9km

The months with the highest visibility are January, February, March, April, May and December (9km).
The months with the lowest visibility are August and September (6km).

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