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
In Sunset Cliffs, February and December are characterised by the lowest temperatures, recording an average high of 63°F (17.2°C).Humidity
In Sunset Cliffs, California, the average relative humidity in December is 63%.Rainfall
The month with the most rainfall is December, when the rain falls for 6.8 days and typically aggregates up to 1.81" (46mm) 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 December, sunrise is at 6:33 am and sunset at 4:42 pm. On the last day of the month, sunrise is at 6:51 am and sunset at 4:53 pm PST.
Sunshine
With an average of 6.7h of sunshine, December has the least sunshine of the year.UV index
January through March, November and December, with an average maximum UV index of 4, are months with the lowest UV index. A UV Index reading of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The daily high UV index of 4 in December translates into this advice:
Take precautions - Protection against skin and eye damage is obliged. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What part of the year is the coldest in Sunset Cliffs?
What are the temperatures in Sunset Cliffs in December?
What is the average humidity in December in Sunset Cliffs?
What is the wettest month in Sunset Cliffs?
How many days does it rain in December in Sunset Cliffs?
What is the month with the shortest days in Sunset Cliffs?
What is the average length of the day in December in Sunset Cliffs?
When is the sunrise / sunset in December in Sunset Cliffs?
What is the month with the least sunshine in Sunset Cliffs?
How many hours of sunshine does Sunset Cliffs have in December?
When is the lowest UV index in Sunset Cliffs?
How high is the UV index in December in Sunset Cliffs?
Average temperature in December
Sunset Cliffs, CA
- Average high temperature in December: 63°F
The warmest month (with the highest average high temperature) is August (75.6°F).
The months with the lowest average high temperature are February and December (63°F).
- Average low temperature in December: 53.6°F
The month with the highest average low temperature is August (65.5°F).
The coldest month (with the lowest average low temperature) is February (53.1°F).
Average pressure in December
Sunset Cliffs, CA
- Average pressure in December: 30.06"Hg
The month with the highest atmospheric pressure is January (30.09"Hg).
The months with the lowest atmospheric pressure are June and September (29.88"Hg).
Average wind speed in December
Sunset Cliffs, CA
- Average wind speed in December: 5.8mph
The windiest month (with the highest average wind speed) is April (6.7mph).
The calmest month (with the lowest average wind speed) is October (5.5mph).
Average humidity in December
Sunset Cliffs, CA
- Average humidity in December: 63%
The month with the highest relative humidity is June (76%).
The months with the lowest relative humidity are January and November (61%).
Average rainfall in December
Sunset Cliffs, CA
- Average rainfall in December: 1.81"
The wettest month (with the highest rainfall) is December (1.81").
The driest month (with the least rainfall) is June (0.08").
Average rainfall days in December
Sunset Cliffs, CA
- Average rainfall days in December: 6.8 days
The month with the highest number of rainy days is March (8.4 days).
The month with the least rainy days is June (2.8 days).
Average daylight in December /
Average sunshine in December
Sunset Cliffs, 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 4min
The months with the most sunshine are July and August (Average sunshine: 11h and 54min).
The month with the least sunshine is December (Average sunshine: 6h and 42min).
Average sunshine days in December
Sunset Cliffs, CA
- Average sunshine days in December: 21.8 days
The month with the most sunshine days is August (24.8 days).
The month with the least sunshine days is February (20.1 days).
Average UV index in December
Sunset Cliffs, 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
Sunset Cliffs, CA
- Average cloud cover in December: 24
The months with the most cloud cover are March, May and December (Cloud cover 24).
The month with the least cloud cover is August (Cloud cover 9).
Average visibility in December
Sunset Cliffs, 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).
Sunset Cliffs, California, USA
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