December weather forecast
Opichén, Mexico

December

Weather in December

December, the first month of the winter in Opichén, is also a moderately hot month, with an average temperature fluctuating between 29.1°C (84.4°F) and 19.5°C (67.1°F).

Temperature

The transition into December marks the average high-temperature at a still moderately hot 29.1°C (84.4°F), differing minimally from November's 29.6°C (85.3°F). In the month of December, the temperature generally rests at an average low of 19.5°C (67.1°F).

Heat index

December's average heat index is appraised at a tropical 34°C (93.2°F). Implement heightened safety measures - risk of heat exhaustion and heat cramps is increased. Prolonged activity may result in heatstroke.
Take note of the fact that heat index values are based on shaded circumstances with light airflows. Direct exposure to sunshine could lead to a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', joins air temperature with relative humidity to produce a temperature perception for humans. The perception of temperature can be subjective, varying based on activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. Awareness of direct sun exposure is crucial as it has the potential to heighten the weather's effects, pushing up the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Typically, young kids are at a higher risk than adults since they sweat less. Also, the larger skin surface in proportion to their small bodies and the heightened heat production due to their active nature adds to their vulnerability.

Humidity

In Opichén, the average relative humidity in December is 75%.

Rainfall

In Opichén, during December, the rain falls for 11.5 days and regularly aggregates up to 24mm (0.94") of precipitation. In Opichén, during the entire year, the rain falls for 167.3 days and collects up to 536mm (21.1") of precipitation.

Daylight

December has the shortest days of the year in Opichén, with an average of 10h and 54min of daylight.
On the first day of the month, sunrise is at 6:19 am and sunset at 5:17 pm. On the last day of December, sunrise is at 6:35 am and sunset at 5:30 pm CST.

Sunshine

In December, the average sunshine is 6.3h.

UV index

The months with the lowest UV index in Opichén are January, November and December, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for the ordinary person.
Note: The daily maximum UV index of 6 in December interprets into the following advice:
Uphold preventive measures and conform to sun safety guidelines. Defending against skin and eye harm is crucial. Avoid direct Sun exposure and stay in the shade between 10 a.m. and 4 p.m., a time when UV radiation is most intense, noting that not all shade structures offer full protection. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun.

Frequently asked questions

Is it hot in Opichén during December?
In Opichén, 29.1°C (84.4°F) is the average high-temperature and 19.5°C (67.1°F) is the average low-temperature during December. The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which factors the actual air temperature with the relative humidity, in December is appraised at 34°C (93.2°F).
What is the average humidity in December in Opichén?
The average relative humidity in December in Opichén is 75%.
How much does it rain in Opichén in December?
In December, in Opichén, the rain falls for 11.5 days. Throughout December, 24mm (0.94") of precipitation is accumulated.
What is the month with the shortest days in Opichén?
With an average of 10h and 54min of daylight, December has the shortest days of the year.
What is the average length of the day in December in Opichén?
In December, the average day length in Opichén is 10h and 55min.
When is the sunrise / sunset in December in Opichén?
On the first day of December, sunrise is at 6:19 am and sunset at 5:17 pm. On the last day of the month, sunrise is at 6:35 am and sunset at 5:30 pm CST.
How long on average sun shines in December in Opichén?
The average sunshine duration in December is 6.3h.
When is the lowest UV index in Opichén?
The months with the lowest UV index in Opichén are January, November and December, with an average maximum UV index of 6.
How high is the UV index in December in Opichén?
In December, the average daily maximum UV index is 6. A UV Index value of 6 to 7 symbolizes a high health 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
Opichén, Mexico
  • Average high temperature in December: 29.1°C

The warmest month (with the highest average high temperature) is May (35.4°C).
The month with the lowest average high temperature is January (28.1°C).

  • Average low temperature in December: 19.5°C

The month with the highest average low temperature is June (24.3°C).
The coldest month (with the lowest average low temperature) is January (18.6°C).

Average pressure in December
Opichén, Mexico
  • Average pressure in December: 1016.4mbar

The month with the highest atmospheric pressure is January (1017.6mbar).
The month with the lowest atmospheric pressure is September (1011.9mbar).

Average wind speed in December
Opichén, Mexico
  • Average wind speed in December: 13.5km/h

The windiest month (with the highest average wind speed) is March (16.1km/h).
The calmest month (with the lowest average wind speed) is September (10.6km/h).

Average humidity in December
Opichén, Mexico
  • Average humidity in December: 75%

The months with the highest relative humidity are September and October (78%).
The months with the lowest relative humidity are April and May (63%).

Average rainfall in December
Opichén, Mexico
  • Average rainfall in December: 24mm

The wettest month (with the highest rainfall) is June (99mm).
The driest months (with the least rainfall) are February and March (12mm).

Average rainfall days in December
Opichén, Mexico
  • Average rainfall days in December: 11.5 days

The month with the highest number of rainy days is September (20.4 days).
The months with the least rainy days are February and March (7.2 days).

Average daylight in December /
Average sunshine in December
Opichén, 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: 6h and 2min

The month with the most sunshine is May (Average sunshine: 11h and 6min).
The month with the least sunshine is January (Average sunshine: 5h and 54min).

Average sunshine days in December
Opichén, Mexico
  • Average sunshine days in December: 15.5 days

The month with the most sunshine days is March (21.8 days).
The month with the least sunshine days is October (8.5 days).

Average UV index in December
Opichén, Mexico
  • Average UV index in December: 6

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

Average cloud cover in December
Opichén, Mexico
  • Average cloud cover in December: 33

The month with the most cloud cover is January (Cloud cover 36).
The months with the least cloud cover are March and April (Cloud cover 25).

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

The months with the highest visibility are February, March, April, May and June (10km).
The month with the lowest visibility is September (8km).

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