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
Temperature records mark December as the coldest month, with highs averaging 61.9°F (16.6°C) and lows at 51.6°F (10.9°C).Humidity
In December, the average relative humidity is 63%.Rainfall
The month with the most rainfall is December, when the rain falls for 6.8 days and typically aggregates up to 1.93" (49mm) of precipitation.Daylight
December has the shortest days of the year, with an average of 10h and 0min of daylight.On the first day of the month, sunrise is at 6:37 am and sunset at 4:42 pm. On the last day of December, sunrise is at 6:54 am and sunset at 4:53 pm PST.
Sunshine
The month with the least sunshine is December, with an average of 6.4h of sunshine.UV index
January through March, November and December, with an average maximum UV index of 4, are months with the lowest UV index in Capistrano Beach. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for the average person.Note: An average UV index of 4 in December transforms into this advice:
Be mindful. Individuals with a lighter skin tone may suffer burns in less than 30 minutes. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. During bright days, sunglasses that offer UVA and UVB defense are recommended.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What month is the coldest?
What is the usual temperature for Capistrano Beach in December?
What is the average humidity in December?
What is the rainiest month?
How many days does it rain in December?
What is the month with the shortest days?
What is the average length of the day in December in Capistrano Beach?
When are sunrise and sunset in December?
What is the month with the least sunshine?
How many hours of sunshine does Capistrano Beach have in December?
When is the lowest UV index?
How high is the UV index in December?
Average temperature in December
Capistrano Beach, CA
- Average high temperature in December: 61.9°F
The warmest month (with the highest average high temperature) is September (75.7°F).
The month with the lowest average high temperature is December (61.9°F).
- Average low temperature in December: 51.6°F
The month with the highest average low temperature is September (63.5°F).
The coldest month (with the lowest average low temperature) is February (51.1°F).
Average pressure in December
Capistrano Beach, CA
- Average pressure in December: 30.07"Hg
The month with the highest atmospheric pressure is January (30.09"Hg).
The months with the lowest atmospheric pressure are June and September (29.89"Hg).
Average wind speed in December
Capistrano Beach, CA
- Average wind speed in December: 5.7mph
The windiest month (with the highest average wind speed) is April (6.4mph).
The calmest month (with the lowest average wind speed) is October (5.1mph).
Average humidity in December
Capistrano Beach, CA
- Average humidity in December: 63%
The month with the highest relative humidity is June (76%).
The month with the lowest relative humidity is November (61%).
Average rainfall in December
Capistrano Beach, CA
- Average rainfall in December: 1.93"
The wettest month (with the highest rainfall) is December (1.93").
The driest month (with the least rainfall) is June (0.12").
Average rainfall days in December
Capistrano Beach, CA
- Average rainfall days in December: 6.8 days
The month with the highest number of rainy days is March (8.1 days).
The month with the least rainy days is June (3.6 days).
Average daylight in December /
Average sunshine in December
Capistrano Beach, CA
- Average daylight in December: 10h and 0min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in December: 6h and 2min
The month with the most sunshine is August (Average sunshine: 11h and 48min).
The month with the least sunshine is December (Average sunshine: 6h and 24min).
Average sunshine days in December
Capistrano Beach, CA
- Average sunshine days in December: 22.9 days
The month with the most sunshine days is January (24.1 days).
The month with the least sunshine days is February (20.3 days).
Average UV index in December
Capistrano Beach, CA
- Average UV index in December: 4
The months with the highest UV index are July, August and September (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 4).
Average cloud cover in December
Capistrano Beach, CA
- Average cloud cover in December: 26
The months with the most cloud cover are March and May (Cloud cover 27).
The month with the least cloud cover is August (Cloud cover 12).
Average visibility in December
Capistrano Beach, CA
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Capistrano Beach, California, USA
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