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, with average temperatures reaching a high of 62.2°F (16.8°C) and a low of 50.9°F (10.5°C), is the coldest month.Humidity
The average relative humidity in December is 57%.Rainfall
In December, the rain falls for 4.5 days. Throughout December, 1.22" (31mm) of precipitation is accumulated. In Topanga, during the entire year, the rain falls for 50.3 days and collects up to 7.87" (200mm) of precipitation.Daylight
December has the shortest days of the year, with an average of 9h and 54min of daylight.On the first day of December, sunrise is at 6:42 am and sunset at 4:44 pm. On the last day of the month, sunrise is at 6:59 am and sunset at 4:55 pm PST.
Sunshine
January, February and December, with an average of 6.7h of sunshine, are months with the least sunshine.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for ordinary individuals.Note: The maximum daily UV index, 4 in December, converts into the following recommendations:
Act with care - The suggestion to avoid sunburn is emphasized. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the coldest month?
What is the average December temperature in Topanga?
What is the average humidity in December?
How much does it rain in December?
What is the month with the shortest days?
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 in Topanga?
What is the UV index reading in December?
Average temperature in December
Topanga, CA
- Average high temperature in December: 62.2°F
The warmest month (with the highest average high temperature) is August (78.8°F).
The month with the lowest average high temperature is December (62.2°F).
- Average low temperature in December: 50.9°F
The month with the highest average low temperature is September (63.9°F).
The coldest month (with the lowest average low temperature) is February (50.5°F).
Average pressure in December
Topanga, CA
- Average pressure in December: 30.08"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The months with the lowest atmospheric pressure are June and September (29.9"Hg).
Average wind speed in December
Topanga, CA
- Average wind speed in December: 6.2mph
The windiest month (with the highest average wind speed) is April (6.5mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity in December
Topanga, CA
- Average humidity in December: 57%
The month with the highest relative humidity is June (72%).
The month with the lowest relative humidity is November (54%).
Average rainfall in December
Topanga, CA
- Average rainfall in December: 1.22"
The wettest month (with the highest rainfall) is January (1.69").
The driest month (with the least rainfall) is June (0.08").
Average rainfall days in December
Topanga, CA
- Average rainfall days in December: 4.5 days
The month with the highest number of rainy days is March (7 days).
The month with the least rainy days is August (2.4 days).
Average daylight in December /
Average sunshine in December
Topanga, 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 4min
The months with the most sunshine are July and August (Average sunshine: 11h and 54min).
The months with the least sunshine are January, February and December (Average sunshine: 6h and 42min).
Average sunshine days in December
Topanga, CA
- Average sunshine days in December: 25.4 days
The month with the most sunshine days is October (26 days).
The month with the least sunshine days is February (22.1 days).
Average UV index in December
Topanga, 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, November and December (UV index 4).
Average cloud cover in December
Topanga, CA
- Average cloud cover in December: 22
The month with the most cloud cover is March (Cloud cover 23).
The month with the least cloud cover is August (Cloud cover 8).
Average visibility in December
Topanga, 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).
Topanga, California, USA
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