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
Weather in December
Temperature
December's onset brings an average high-temperature of an enjoyable 19.7°C (67.5°F), showing a minute difference from November's 20°C (68°F). San Diego Chalma, in December, observes a steady average low-temperature of 9.6°C (49.3°F).Humidity
In December, the average relative humidity is 72%.Rainfall
The month with the least rainfall is December, when the rain falls for 4.3 days and typically collects 3mm (0.12") of precipitation.Daylight
The month with the shortest days in San Diego Chalma is December, with an average of 11h and 0min of daylight.On the first day of the month, sunrise is at 6:45 am and sunset at 5:51 pm. On the last day of December, sunrise is at 7:01 am and sunset at 6:04 pm CST.
Sunshine
The average sunshine in December is 8h.UV index
The months with the lowest UV index in San Diego Chalma are January, October and December, with an average maximum UV index of 4. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for the ordinary person.Note: In December, a daily maximum UV index of 4 leads to the following instructions:
Take measures. Individuals with light skin might experience burns in under 30 minutes. Minimize direct exposure to the Sun during midday when its radiation is at its peak. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average December temperature in San Diego Chalma?
What is the average humidity in December in San Diego Chalma?
What is the driest month in San Diego Chalma?
How many days does it rain in December in San Diego Chalma?
What is the month with the shortest days in San Diego Chalma?
What is the average length of the day in December in San Diego Chalma?
What time are sunrise and sunset in December in San Diego Chalma?
How many hours of sunshine does San Diego Chalma have in December?
What is the month with the lowest UV index in San Diego Chalma?
How high is the UV index in December in San Diego Chalma?
Average temperature in December
San Diego Chalma, Mexico
- Average high temperature in December: 19.7°C
The warmest month (with the highest average high temperature) is April (25.8°C).
The month with the lowest average high temperature is January (19.1°C).
- Average low temperature in December: 9.6°C
The month with the highest average low temperature is May (15.1°C).
The coldest month (with the lowest average low temperature) is January (8.8°C).
Average pressure in December
San Diego Chalma, Mexico
- Average pressure in December: 1018mbar
The month with the highest atmospheric pressure is January (1018.9mbar).
The month with the lowest atmospheric pressure is May (1014.1mbar).
Average wind speed in December
San Diego Chalma, Mexico
- Average wind speed in December: 9.7km/h
The windiest month (with the highest average wind speed) is March (10.8km/h).
The calmest month (with the lowest average wind speed) is September (8.6km/h).
Average humidity in December
San Diego Chalma, Mexico
- Average humidity in December: 72%
The month with the highest relative humidity is September (79%).
The month with the lowest relative humidity is April (60%).
Average rainfall in December
San Diego Chalma, Mexico
- Average rainfall in December: 3mm
The wettest month (with the highest rainfall) is June (122mm).
The driest month (with the least rainfall) is December (3mm).
Average rainfall days in December
San Diego Chalma, Mexico
- Average rainfall days in December: 4.3 days
The month with the highest number of rainy days is June (20.9 days).
The month with the least rainy days is December (4.3 days).
Average daylight in December /
Average sunshine in December
San Diego Chalma, Mexico
- Average daylight in December: 11h and 0min
The month with the longest days is June (Average daylight: 13h and 12min).
The month with the shortest days is December (Average daylight: 11h and 0min).
- Average sunshine in December: 8h and 0min
The month with the most sunshine is May (Average sunshine: 11h and 6min).
The month with the least sunshine is November (Average sunshine: 7h and 24min).
Average sunshine days in December
San Diego Chalma, Mexico
- Average sunshine days in December: 24.4 days
The month with the most sunshine days is December (24.4 days).
The month with the least sunshine days is June (7.9 days).
Average UV index in December
San Diego Chalma, 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 and December (UV index 4).
Average cloud cover in December
San Diego Chalma, Mexico
- Average cloud cover in December: 24
The month with the most cloud cover is September (Cloud cover 41).
The month with the least cloud cover is April (Cloud cover 18).
Average visibility in December
San Diego Chalma, Mexico
- Average visibility in December: 10km
The months with the highest visibility are February, March, April, May and December (10km).
The months with the lowest visibility are January, June, July, August, September, October and November (9km).
San Diego Chalma, Mexico
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