December weather forecast
San Mateo Atenco, Mexico

December

Weather in December

The first month of the winter, December, is still a refreshing month in San Mateo Atenco, Mexico, with an average temperature ranging between min 5.4°C (41.7°F) and max 17.6°C (63.7°F).

Temperature

San Mateo Atenco's weather in December displays an average high-temperature of a still enjoyable 17.6°C (63.7°F), showing minor disparity from November's 17.8°C (64°F). Following the sharp contrast to daytime warmth, an average nighttime temperature of 5.4°C (41.7°F) gets registered in San Mateo Atenco during December.

Humidity

The average relative humidity in December in San Mateo Atenco is 65%.

Rainfall

December is the month with the least rainfall. Rain falls for 6.1 days and accumulates 8mm (0.31") of precipitation.

Daylight

With an average of 11h and 0min of daylight, December has the shortest days of the year in San Mateo Atenco.
On the first day of the month, sunrise is at 6:55 am and sunset at 5:58 pm. On the last day of December, in San Mateo Atenco, sunrise is at 7:11 am and sunset at 6:11 pm CST.

Sunshine

In San Mateo Atenco, the average sunshine in December is 9.3h.

UV index

In San Mateo Atenco, the average daily maximum UV index in December is 4. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for the average person.
Note: The daily high UV index of 4 in December translates into this advice:
Be vigilant - Preventing sunburn is recommended. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.

Frequently asked questions

What is the average December temperature in San Mateo Atenco?
December temperatures vary between a high-temperature of 17.6°C (63.7°F) and a low-temperature of 5.4°C (41.7°F).
What is the average humidity in December in San Mateo Atenco?
In San Mateo Atenco, the average relative humidity in December is 65%.
What is the driest month in San Mateo Atenco?
The month with the least rainfall in San Mateo Atenco is December, when the rain falls for 6.1 days and typically collects 8mm (0.31") of precipitation.
How many days does it rain in December in San Mateo Atenco?
In San Mateo Atenco, Mexico, during December, the rain falls for 6.1 days and regularly aggregates up to 8mm (0.31") of precipitation.
What is the month with the shortest days in San Mateo Atenco?
December has the shortest days of the year in San Mateo Atenco, with an average of 11h and 0min of daylight.
How many hours of daylight does San Mateo Atenco have in December?
The average day length in December is 10h and 59min.
When is the sunrise / sunset in December in San Mateo Atenco?
In December, on the first day of the month, sunrise is at 6:55 am and sunset at 5:58 pm. On the last day of the month, in San Mateo Atenco, Mexico, sunrise is at 7:11 am and sunset at 6:11 pm CST.
How long on average sun shines in December in San Mateo Atenco?
The average sunshine duration in December in San Mateo Atenco, Mexico, is 9.3h.
What is the UV index intensity in December in San Mateo Atenco?
In San Mateo Atenco, Mexico, the average daily maximum UV index in December is 4. A UV Index value of 3 to 5 symbolizes a moderate health threat 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 - San Mateo Atenco, Mexico
Average temperature in December
San Mateo Atenco, Mexico
  • Average high temperature in December: 17.6°C

The warmest month (with the highest average high temperature) is April (22.8°C).
The month with the lowest average high temperature is January (17.2°C).

  • Average low temperature in December: 5.4°C

The month with the highest average low temperature is May (10.8°C).
The coldest month (with the lowest average low temperature) is January (4.9°C).

Average pressure in December - San Mateo Atenco, Mexico
Average pressure in December
San Mateo Atenco, Mexico
  • Average pressure in December: 1017.2mbar

The month with the highest atmospheric pressure is January (1017.7mbar).
The month with the lowest atmospheric pressure is May (1013.7mbar).

Average wind speed in December - San Mateo Atenco, Mexico
Average wind speed in December
San Mateo Atenco, Mexico
  • Average wind speed in December: 5.6km/h

The windiest months (with the highest average wind speed) are March and April (6.8km/h).
The calmest month (with the lowest average wind speed) is July (4.4km/h).

Average humidity in December - San Mateo Atenco, Mexico
Average humidity in December
San Mateo Atenco, Mexico
  • Average humidity in December: 65%

The month with the highest relative humidity is September (86%).
The month with the lowest relative humidity is April (47%).

Average rainfall in December - San Mateo Atenco, Mexico
Average rainfall in December
San Mateo Atenco, Mexico
  • Average rainfall in December: 8mm

The wettest month (with the highest rainfall) is July (301mm).
The driest month (with the least rainfall) is December (8mm).

Average rainfall days in December - San Mateo Atenco, Mexico
Average rainfall days in December
San Mateo Atenco, Mexico
  • Average rainfall days in December: 6.1 days

The month with the highest number of rainy days is August (30.8 days).
The month with the least rainy days is January (5.8 days).

Average daylight in December / Average sunshine in December - San Mateo Atenco, Mexico
Average daylight in December /
Average sunshine in December
San Mateo Atenco, Mexico
  • Average daylight in December: 11h and 0min

The month with the longest days is June (Average daylight: 13h and 18min).
The month with the shortest days is December (Average daylight: 11h and 0min).

  • Average sunshine in December: 9h and 2min

The month with the most sunshine is March (Average sunshine: 9h and 42min).
The month with the least sunshine is November (Average sunshine: 8h and 6min).

Average sunshine days in December - San Mateo Atenco, Mexico
Average sunshine days in December
San Mateo Atenco, Mexico
  • Average sunshine days in December: 21.6 days

The month with the most sunshine days is January (22.3 days).
The month with the least sunshine days is August (0.1 days).

Average UV index in December - San Mateo Atenco, Mexico
Average UV index in December
San Mateo Atenco, Mexico
  • Average UV index in December: 4

The months with the highest UV index are March and April (UV index 5).
The months with the lowest UV index are September and October (UV index 3).

Average cloud cover in December - San Mateo Atenco, Mexico
Average cloud cover in December
San Mateo Atenco, Mexico
  • Average cloud cover in December: 13

The month with the most cloud cover is September (Cloud cover 46).
The month with the least cloud cover is March (Cloud cover 12).

Average visibility in December - San Mateo Atenco, Mexico
Average visibility in December
San Mateo Atenco, Mexico
  • Average visibility in December: 10km

The months with the highest visibility are January, February, March, April, May and December (10km).
The month with the lowest visibility is September (7km).

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