December weather forecastColotlán, Mexico

December

Weather in December

The first month of the winter, December, is also an agreeable month in Colotlán, Mexico, with temperature in the range of an average high of 21.1°C (70°F) and an average low of 7.5°C (45.5°F).

Temperature

December welcomes an average high-temperature of a still pleasant 21.1°C (70°F), not much different from the preceding month. Colotlán undergoes a major shift from daytime highs, averaging a frosty 7.5°C (45.5°F) during the night in December.

Humidity

In Colotlán, the average relative humidity in December is 55%.

Rainfall

In Colotlán, in December, it is raining for 4.4 days, with typically 14mm (0.55") of accumulated precipitation. Throughout the year, there are 131.5 rainfall days, and 557mm (21.93") of precipitation is accumulated.

Daylight

December has the shortest days of the year, with an average of 10h and 48min of daylight.
On the first day of the month, sunrise is at 7:16 am and sunset at 6:08 pm. On the last day of December, sunrise is at 7:32 am and sunset at 6:20 pm CST.

Sunshine

In Colotlán, Mexico, the average sunshine in December is 9.6h.

UV index

January, November and December, with an average maximum UV index of 4, are months with the lowest UV index in Colotlán. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for average individuals.
Note: A maximum UV index of 4 in December translates into the following recommendations:
Adopt protective measures - Requirement to safeguard skin and eyes from harm exists. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.

Frequently asked questions

The average high-temperature and low-temperature in Colotlán during December are 21.1°C (70°F) and 7.5°C (45.5°F) respectively. In June, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which calculates the temperature value influenced by the moisture in the air, is estimated at 29°C (84.2°F).

The average relative humidity in December is 55%.

In Colotlán, Mexico, in December, it is raining for 4.4 days, with typically 14mm (0.55") of accumulated precipitation.

The month with the shortest days is December, with an average of 10h and 48min of daylight.

In December, the average day length in Colotlán, Mexico, is 10h and 49min.

In December, on the first day of the month, sunrise is at 7:16 am and sunset at 6:08 pm. On the last day of the month, in Colotlán, Mexico, sunrise is at 7:32 am and sunset at 6:20 pm CST.

In Colotlán, Mexico, the average sunshine duration in December is 9.6h.

The months with the lowest UV index in Colotlán are January, November and December, with an average maximum UV index of 4.

In December, the average daily maximum UV index in Colotlán is 4. A UV Index of 3 to 5 symbolizes a moderate vulnerability from 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 sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Colotlán, Mexico

  • Average high temperature in December: 21.1°C

The warmest month (with the highest average high temperature) is May (29.5°C).
The month with the lowest average high temperature is January (20.8°C).

  • Average low temperature in December: 7.5°C

The month with the highest average low temperature is June (16.6°C).
The coldest month (with the lowest average low temperature) is January (6.8°C).

Average pressure in December
Colotlán, Mexico

  • Average pressure in December: 1017.3mbar

The month with the highest atmospheric pressure is January (1017.8mbar).
The months with the lowest atmospheric pressure are May and June (1013.2mbar).

Average wind speed in December
Colotlán, Mexico

  • Average wind speed in December: 7km/h

The windiest month (with the highest average wind speed) is April (9.9km/h).
The calmest month (with the lowest average wind speed) is July (5.9km/h).

Average humidity in December
Colotlán, Mexico

  • Average humidity in December: 55%

The month with the highest relative humidity is September (72%).
The month with the lowest relative humidity is April (34%).

Average rainfall in December
Colotlán, Mexico

  • Average rainfall in December: 14mm

The wettest month (with the highest rainfall) is July (136mm).
The driest month (with the least rainfall) is April (3mm).

Average rainfall days in December
Colotlán, Mexico

  • Average rainfall days in December: 4.4 days

The month with the highest number of rainy days is July (24.5 days).
The month with the least rainy days is April (2.8 days).

Average daylight in December /
Average sunshine in December
Colotlán, Mexico

  • Average daylight in December: 10h and 48min

The month with the longest days is June (Average daylight: 13h and 30min).
The month with the shortest days is December (Average daylight: 10h and 48min).

  • Average sunshine in December: 9h and 36min

The month with the most sunshine is May (Average sunshine: 9h and 54min).
The month with the least sunshine is July (Average sunshine: 9h and 6min).

Average sunshine days in December
Colotlán, Mexico

  • Average sunshine days in December: 26 days

The month with the most sunshine days is April (27.5 days).
The month with the least sunshine days is July (2.3 days).

Average UV index in December
Colotlán, Mexico

  • Average UV index in December: 4

The months with the highest UV index are May and July (UV index 6).
The months with the lowest UV index are January, November and December (UV index 4).

Average cloud cover in December
Colotlán, Mexico

  • Average cloud cover in December: 13

The months with the most cloud cover are July and September (Cloud cover 32).
The months with the least cloud cover are March and April (Cloud cover 10).

Average visibility in December
Colotlán, Mexico

  • Average visibility in December: 10km

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