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, characterized by an average high temperature of 60.4°F (15.8°C) and a low temperature of 49.3°F (9.6°C), is generally the coldest month.Humidity
In December, the average relative humidity is 57%.Rainfall
In Westlake Village, in December, during 5.9 rainfall days, 1.61" (41mm) of precipitation is typically accumulated. Throughout the year, there are 51.2 rainfall days, and 9.41" (239mm) of precipitation is accumulated.Daylight
The month with the shortest days is December, with an average of 9h and 54min of daylight.On the first day of December, sunrise is at 6:43 am and sunset at 4:45 pm. On the last day of the month, sunrise is at 7:00 am and sunset at 4:56 pm PST.
Sunshine
The months with the least sunshine are January, February and December, with an average of 6.8h of sunshine.UV index
The months with the lowest UV index are January through April, November and December, with an average maximum UV index of 4. A UV Index reading of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for the ordinary person.Note: In December, the maximum UV index of 4 transforms into these recommendations:
Undertake protective steps - Recommendations to avoid sunburn are issued. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What time of the year is the coldest?
What is the temperature in December?
What is the average humidity in December?
How much does it rain in Westlake Village in December?
What is the month with the shortest days in Westlake Village?
What is the average length of the day in December?
When is the sunrise / sunset in December?
What are the months with the least sunshine?
How long on average sun shines in December?
When is the lowest UV index?
What is the UV index reading in December?
Average temperature in December
Westlake Village, CA
- Average high temperature in December: 60.4°F
The warmest month (with the highest average high temperature) is August (78.4°F).
The month with the lowest average high temperature is December (60.4°F).
- Average low temperature in December: 49.3°F
The month with the highest average low temperature is August (63.7°F).
The coldest month (with the lowest average low temperature) is February (49.1°F).
Average pressure in December
Westlake Village, CA
- Average pressure in December: 30.08"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The months with the lowest atmospheric pressure are June and September (29.9"Hg).
Average wind speed in December
Westlake Village, CA
- Average wind speed in December: 6.5mph
The windiest months (with the highest average wind speed) are April and December (6.5mph).
The calmest month (with the lowest average wind speed) is August (4.6mph).
Average humidity in December
Westlake Village, CA
- Average humidity in December: 57%
The month with the highest relative humidity is June (69%).
The month with the lowest relative humidity is November (53%).
Average rainfall in December
Westlake Village, CA
- Average rainfall in December: 1.61"
The wettest months (with the highest rainfall) are January and February (1.93").
The driest month (with the least rainfall) is June (0.08").
Average rainfall days in December
Westlake Village, CA
- Average rainfall days in December: 5.9 days
The month with the highest number of rainy days is March (7.3 days).
The month with the least rainy days is August (1.5 days).
Average daylight in December /
Average sunshine in December
Westlake Village, CA
- Average daylight in December: 9h and 5min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in December: 6h and 5min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The months with the least sunshine are January, February and December (Average sunshine: 6h and 48min).
Average sunshine days in December
Westlake Village, CA
- Average sunshine days in December: 23.7 days
The month with the most sunshine days is August (26.2 days).
The month with the least sunshine days is February (21 days).
Average UV index in December
Westlake Village, CA
- Average UV index in December: 4
The months with the highest UV index are June, July, August and September (UV index 6).
The months with the lowest UV index are January, February, March, April, November and December (UV index 4).
Average cloud cover in December
Westlake Village, CA
- Average cloud cover in December: 22
The months with the most cloud cover are March and December (Cloud cover 22).
The month with the least cloud cover is August (Cloud cover 5).
Average visibility in December
Westlake Village, 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).
Westlake Village, California, USA
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