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
December comes with an average high-temperature of a still agreeable 21.5°C (70.7°F), equal to November's temperature. A marked difference from the daytime temperatures, San Juan Copala's nighttime temperature falls to an average low of 9.4°C (48.9°F) in December.Humidity
In December, the average relative humidity is 69%.Rainfall
December is the month with the least rainfall in San Juan Copala. Rain falls for 4.5 days and accumulates 3mm (0.12") of precipitation.Daylight
The month with the shortest days is December, with an average of 11h and 6min of daylight.On the first day of December, sunrise is at 6:45 am and sunset at 5:56 pm. On the last day of the month, sunrise is at 7:01 am and sunset at 6:08 pm CST.
Sunshine
In December, the average sunshine is 8.5h.UV index
January, June, October through December, with an average maximum UV index of 4, are months with the lowest UV index. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: In December, the maximum UV index of 4 translates into these guidelines:
Exercise prudence. Persons with fair skin could be burned in under 30 minutes. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for San Juan Copala in December?
What is the average humidity in December in San Juan Copala?
What is the driest month?
How much does it rain in December?
What is the month with the shortest days?
How many hours of daylight does San Juan Copala have in December?
What time are sunrise and sunset in December in San Juan Copala?
How long on average sun shines in December?
What is the month with the lowest UV index?
How high is the UV index in December?
Average temperature in December
San Juan Copala, Mexico
- Average high temperature in December: 21.5°C
The warmest month (with the highest average high temperature) is April (27.3°C).
The month with the lowest average high temperature is January (21.1°C).
- Average low temperature in December: 9.4°C
The month with the highest average low temperature is May (14.5°C).
The coldest month (with the lowest average low temperature) is January (8.8°C).
Average pressure in December
San Juan Copala, Mexico
- Average pressure in December: 1017.1mbar
The month with the highest atmospheric pressure is January (1017.7mbar).
The month with the lowest atmospheric pressure is May (1013.8mbar).
Average wind speed in December
San Juan Copala, Mexico
- Average wind speed in December: 7.8km/h
The windiest month (with the highest average wind speed) is January (8.7km/h).
The calmest months (with the lowest average wind speed) are June and September (6.7km/h).
Average humidity in December
San Juan Copala, Mexico
- Average humidity in December: 69%
The month with the highest relative humidity is September (81%).
The month with the lowest relative humidity is April (56%).
Average rainfall in December
San Juan Copala, Mexico
- Average rainfall in December: 3mm
The wettest month (with the highest rainfall) is June (164mm).
The driest month (with the least rainfall) is December (3mm).
Average rainfall days in December
San Juan Copala, Mexico
- Average rainfall days in December: 4.5 days
The month with the highest number of rainy days is September (26.6 days).
The month with the least rainy days is December (4.5 days).
Average daylight in December /
Average sunshine in December
San Juan Copala, Mexico
- Average daylight in December: 11h and 1min
The month with the longest days is June (Average daylight: 13h and 6min).
The month with the shortest days is December (Average daylight: 11h and 6min).
- Average sunshine in December: 8h and 3min
The month with the most sunshine is May (Average sunshine: 10h and 48min).
The month with the least sunshine is November (Average sunshine: 7h and 36min).
Average sunshine days in December
San Juan Copala, Mexico
- Average sunshine days in December: 22.2 days
The month with the most sunshine days is December (22.2 days).
The months with the least sunshine days are August and September (2 days).
Average UV index in December
San Juan Copala, 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, June, October, November and December (UV index 4).
Average cloud cover in December
San Juan Copala, Mexico
- Average cloud cover in December: 18
The month with the most cloud cover is September (Cloud cover 42).
The months with the least cloud cover are February, March and April (Cloud cover 15).
Average visibility in December
San Juan Copala, Mexico
- Average visibility in December: 10km
The months with the highest visibility are January, February, March, April, May, November and December (10km).
The month with the lowest visibility is September (8km).
