Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
December
Weather in December
Temperature
The arrival of December brings an average high-temperature of a still agreeable 20.3°C (68.5°F), closely following the temperature pattern of November. San José Atlán marks a considerable descent from the daytime apex, as the average temperature dips to a chilly 7.7°C (45.9°F) at night throughout December.Humidity
In December, the average relative humidity in San José Atlán is 59%.Rainfall
The month with the least rainfall is December, when the rain falls for 2.7 days and typically collects 3mm (0.12") of precipitation.Daylight
With an average of 10h and 54min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 6:58 am and sunset at 5:57 pm. On the last day of December, sunrise is at 7:14 am and sunset at 6:09 pm CST.
Sunshine
In December, the average sunshine is 9.2h.UV index
The months with the lowest UV index are January, August, October through December, with an average maximum UV index of 4. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: During December, 4 as the daily maximum UV index converts into the following advice:
Be vigilant - Preventing sunburn is recommended. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. During bright days, sunglasses that offer UVA and UVB defense are recommended.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average December temperature?
What is the average humidity in December?
What is the driest month?
How many days does it rain in December?
What is the month with the shortest days?
How many hours of daylight does San José Atlán have in December?
When is the sunrise / sunset in December?
How many hours of sunshine does San José Atlán have in December?
What is the month with the lowest UV index?
What is the UV index reading in December?
Average temperature in December
San José Atlán, Mexico
- Average high temperature in December: 20.3°C
The warmest months (with the highest average high temperature) are April and May (26.3°C).
The month with the lowest average high temperature is January (19.5°C).
- Average low temperature in December: 7.7°C
The month with the highest average low temperature is May (13.8°C).
The coldest month (with the lowest average low temperature) is January (7.1°C).
Average pressure in December
San José Atlán, Mexico
- Average pressure in December: 1017.8mbar
The month with the highest atmospheric pressure is January (1018.6mbar).
The month with the lowest atmospheric pressure is May (1013.8mbar).
Average wind speed in December
San José Atlán, Mexico
- Average wind speed in December: 9.1km/h
The windiest month (with the highest average wind speed) is March (11.2km/h).
The calmest month (with the lowest average wind speed) is July (9km/h).
Average humidity in December
San José Atlán, Mexico
- Average humidity in December: 59%
The month with the highest relative humidity is September (78%).
The month with the lowest relative humidity is April (43%).
Average rainfall in December
San José Atlán, Mexico
- Average rainfall in December: 3mm
The wettest month (with the highest rainfall) is July (109mm).
The driest month (with the least rainfall) is December (3mm).
Average rainfall days in December
San José Atlán, Mexico
- Average rainfall days in December: 2.7 days
The month with the highest number of rainy days is July (24.2 days).
The month with the least rainy days is December (2.7 days).
Average daylight in December /
Average sunshine in December
San José Atlán, Mexico
- Average daylight in December: 10h and 5min
The month with the longest days is June (Average daylight: 13h and 18min).
The month with the shortest days is December (Average daylight: 10h and 54min).
- Average sunshine in December: 9h and 1min
The month with the most sunshine is June (Average sunshine: 10h and 6min).
The month with the least sunshine is November (Average sunshine: 8h and 12min).
Average sunshine days in December
San José Atlán, Mexico
- Average sunshine days in December: 26.3 days
The month with the most sunshine days is December (26.3 days).
The month with the least sunshine days is July (3.2 days).
Average UV index in December
San José Atlán, Mexico
- Average UV index in December: 4
The month with the highest UV index is April (UV index 6).
The months with the lowest UV index are January, August, October, November and December (UV index 4).
Average cloud cover in December
San José Atlán, Mexico
- Average cloud cover in December: 13
The months with the most cloud cover are July and September (Cloud cover 44).
The months with the least cloud cover are March, April and December (Cloud cover 13).
Average visibility in December
San José Atlán, Mexico
- Average visibility in December: 10km
The months with the highest visibility are January, February, March, April, May and December (10km).
The months with the lowest visibility are July, August and September (8km).
