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 snowfall 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
Transitioning from November to December, San Diego de la Unión observes an average high-temperature of a comfortable 19.9°C (67.8°F), differing subtly from the previous month. In San Diego de la Unión, the nighttime temperature registers a significant drop from daytime peaks to an average of 7.3°C (45.1°F) in December.Humidity
In San Diego de la Unión, Mexico, the average relative humidity in December is 60%.Rainfall
In December, in San Diego de la Unión, the rain falls for 3.5 days. Throughout December, 9mm (0.35") of precipitation is accumulated. Throughout the year, in San Diego de la Unión, there are 129.7 rainfall days, and 450mm (17.72") of precipitation is accumulated.Snowfall
In San Diego de la Unión, snow does not fall in February through October and December.Daylight
The month with the shortest days in San Diego de la Unión is December, with an average of 10h and 54min of daylight.On the first day of December, sunrise is at 7:05 am and sunset at 6:00 pm. On the last day of the month, sunrise is at 7:21 am and sunset at 6:12 pm CST.
Sunshine
With an average of 9.8h of sunshine, December has the most sunshine of the year in San Diego de la Unión, Mexico.UV index
January, October through December, with an average maximum UV index of 4, are months with the lowest UV index in San Diego de la Unión. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for the average person.Note: The daily high UV index of 4 in December translates into this advice:
Proceed with care. Light skin individuals may be exposed to burns in fewer than 30 minutes. Minimize direct exposure to the Sun during midday when its radiation is at its peak. Enhance your sun protection with tightly woven, yet airy clothing.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average December temperature in San Diego de la Unión?
What is the average humidity in December in San Diego de la Unión?
How many days does it rain in December in San Diego de la Unión?
When it does not snow in San Diego de la Unión?
Does it snow in San Diego de la Unión in December?
What is the month with the shortest days in San Diego de la Unión?
How many hours of daylight does San Diego de la Unión have in December?
When is the sunrise / sunset in December in San Diego de la Unión?
What month has the most sunshine in San Diego de la Unión?
How many hours of sunshine does San Diego de la Unión have in December?
When is the lowest UV index in San Diego de la Unión?
What is the UV index reading in December in San Diego de la Unión?
Average temperature in December
San Diego de la Unión, Mexico
- Average high temperature in December: 19.9°C
The warmest month (with the highest average high temperature) is May (27.3°C).
The month with the lowest average high temperature is January (19.3°C).
- Average low temperature in December: 7.3°C
The month with the highest average low temperature is May (14.3°C).
The coldest month (with the lowest average low temperature) is January (6.3°C).
Average pressure in December
San Diego de la Unión, Mexico
- Average pressure in December: 1018mbar
The month with the highest atmospheric pressure is January (1018.7mbar).
The month with the lowest atmospheric pressure is May (1013.7mbar).
Average wind speed in December
San Diego de la Unión, Mexico
- Average wind speed in December: 9.2km/h
The windiest month (with the highest average wind speed) is April (10.9km/h).
The calmest month (with the lowest average wind speed) is November (9.1km/h).
Average humidity in December
San Diego de la Unión, Mexico
- Average humidity in December: 60%
The month with the highest relative humidity is September (77%).
The month with the lowest relative humidity is April (40%).
Average rainfall in December
San Diego de la Unión, Mexico
- Average rainfall in December: 9mm
The wettest month (with the highest rainfall) is June (78mm).
The driest month (with the least rainfall) is January (6mm).
Average rainfall days in December
San Diego de la Unión, Mexico
- Average rainfall days in December: 3.5 days
The month with the highest number of rainy days is September (17.5 days).
The month with the least rainy days is December (3.5 days).
Average snowfall days in December
San Diego de la Unión, Mexico
- Average snowfall days in December: 0 days
The months with the highest number of snowfall days are January and November (0.1 days).
The months with the least snowfall days are February, March, April, May, June, July, August, September, October and December (0 days).
Average daylight in December /
Average sunshine in December
San Diego de la Unión, 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: 9h and 5min
The month with the most sunshine is December (Average sunshine: 9h and 48min).
The month with the least sunshine is July (Average sunshine: 9h and 6min).
Average sunshine days in December
San Diego de la Unión, Mexico
- Average sunshine days in December: 24.8 days
The month with the most sunshine days is December (24.8 days).
The month with the least sunshine days is September (8.5 days).
Average UV index in December
San Diego de la Unión, 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, October, November and December (UV index 4).
Average cloud cover in December
San Diego de la Unión, Mexico
- Average cloud cover in December: 15
The month with the most cloud cover is September (Cloud cover 43).
The months with the least cloud cover are February, March, April and December (Cloud cover 15).
Average visibility in December
San Diego de la Unión, 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).
