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 snowfall in December
- Average snowfall 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 is the coldest month, with an average high-temperature of 52.9°F (11.6°C) and an average low-temperature of 40.1°F (4.5°C).Humidity
The average relative humidity in December in Capetown, California, is 81%.Rainfall
The month with the most rainfall is December, when the rain falls for 14.8 days and typically aggregates up to 4.96" (126mm) of precipitation.Snowfall
In Capetown, snow does not fall in January, March through December.Daylight
With an average of 9h and 18min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 7:22 am and sunset at 4:51 pm. On the last day of the month, sunrise is at 7:40 am and sunset at 5:01 pm PST.
Sunshine
With an average of 5h of sunshine, December has the least sunshine of the year.UV index
The months with the lowest UV index in Capetown are January through March, November and December, with an average maximum UV index of 3. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: In December, an average UV index of 3 transforms into the following instructions:
Ensure safety - Sun damage prevention is strongly urged. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes. Be advised! The UV radiation from the Sun can be almost doubled due to the reflective properties of snow.
Frequently asked questions
What is the coldest month in Capetown?
What are the temperatures in Capetown in December?
What is the average humidity in December in Capetown?
What is the wettest month in Capetown?
How much does it rain in Capetown in December?
When it does not snow in Capetown?
What is the month with the shortest days in Capetown?
How many hours of daylight does Capetown have in December?
When is the sunrise / sunset in December in Capetown?
What is the month with the least sunshine in Capetown?
How many hours of sunshine does Capetown have in December?
What are the months with the lowest UV index in Capetown?
What is the UV index reading in December in Capetown?
Average temperature in December
Capetown, CA
- Average high temperature in December: 52.9°F
The warmest month (with the highest average high temperature) is August (74.1°F).
The month with the lowest average high temperature is December (52.9°F).
- Average low temperature in December: 40.1°F
The month with the highest average low temperature is August (51.8°F).
The coldest month (with the lowest average low temperature) is February (39.7°F).
Average pressure in December
Capetown, CA
- Average pressure in December: 30.11"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The months with the lowest atmospheric pressure are August and September (29.96"Hg).
Average wind speed in December
Capetown, CA
- Average wind speed in December: 7mph
The windiest month (with the highest average wind speed) is June (7.7mph).
The calmest month (with the lowest average wind speed) is August (5.9mph).
Average humidity in December
Capetown, CA
- Average humidity in December: 81%
The month with the highest relative humidity is March (83%).
The month with the lowest relative humidity is September (73%).
Average rainfall in December
Capetown, CA
- Average rainfall in December: 4.96"
The wettest month (with the highest rainfall) is December (4.96").
The driest month (with the least rainfall) is July (0.08").
Average rainfall days in December
Capetown, CA
- Average rainfall days in December: 14.8 days
The month with the highest number of rainy days is March (17.3 days).
The months with the least rainy days are July and August (1.8 days).
Average snowfall in December
Capetown, CA
- Average snowfall in December: 0"
The month with the highest snowfall is February (0.59").
The months with the least snowfall are January, March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days in December
Capetown, CA
- Average snowfall days in December: 0.1 days
The month with the highest number of snowfall days is February (0.3 days).
The months with the least snowfall days are January, March, April, May, June, July, August, September, October and November (0 days).
Average daylight in December /
Average sunshine in December
Capetown, CA
- Average daylight in December: 9h and 2min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in December: 5h and 0min
The months with the most sunshine are July and August (Average sunshine: 11h and 36min).
The month with the least sunshine is December (Average sunshine: 5h and 0min).
Average sunshine days in December
Capetown, CA
- Average sunshine days in December: 15.1 days
The month with the most sunshine days is July (28.5 days).
The month with the least sunshine days is March (11.9 days).
Average UV index in December
Capetown, CA
- Average UV index in December: 3
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 3).
Average cloud cover in December
Capetown, CA
- Average cloud cover in December: 45
The month with the most cloud cover is March (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 16).
Average visibility in December
Capetown, CA
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, June, September, October, November and December (6mi).
The months with the lowest visibility are May, July and August (5mi).
Capetown, California, USA
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