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 introduction of December sees an average high-temperature of a still agreeable 20.3°C (68.5°F), hardly deviating from November. A steady average of 7.7°C (45.9°F) throughout December underscores a considerable divergence from the daytime high.Humidity
In December, the average relative humidity 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
The month with the shortest days is December, with an average of 10h and 54min of daylight.On the first day of December, sunrise is at 7:00 am and sunset at 5:58 pm. On the last day of the month, sunrise is at 7:16 am and sunset at 6:11 pm CST.
Sunshine
In San Clemente, Mexico, the average sunshine in December 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 value of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: The maximum UV index, 4 during December, leads to the following recommendations:
Prioritize safety - Suggestions to prevent sun damage are offered. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in December in San Clemente?
What is the average humidity in December in San Clemente?
What is the driest month in San Clemente?
How much does it rain in San Clemente in December?
What is the month with the shortest days in San Clemente?
What is the average length of the day in December in San Clemente?
When are sunrise and sunset in December in San Clemente?
How many hours of sunshine does San Clemente have in December?
When is the lowest UV index in San Clemente?
What is the UV index intensity in December in San Clemente?
Average temperature in December
San Clemente, 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 Clemente, 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 Clemente, 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 Clemente, 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 Clemente, 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 Clemente, 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 Clemente, 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 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 Clemente, 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 Clemente, 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 Clemente, 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 Clemente, 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).
