December weather forecastSand City, CA
December
Weather in December
The first month of the winter, December, is still a mild month in Sand City, California, with temperature in the range of an average high of 57.2°F (14°C) and an average low of 46.4°F (8°C).Temperature
With average high and low temperatures of 57.2°F (14°C) and 46.4°F (8°C) respectively, December is Sand City's coldest month.Humidity
The average relative humidity in December in Sand City is 71%.Rainfall
The month with the most rainfall is December, when the rain falls for 9.9 days and typically aggregates up to 2.4" (61mm) of precipitation.Daylight
The month with the shortest days in Sand City is December, with an average of 9h and 42min of daylight.On the first day of December, sunrise is at 7:01 am and sunset at 4:51 pm. On the last day of the month, sunrise is at 7:19 am and sunset at 5:02 pm PST.
Sunshine
December has the least sunshine of the year in Sand City, with an average of 6h of sunshine.UV index
December is the month with the lowest UV index, with an average maximum UV index of 3. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for ordinary individuals.Note: The average daily UV index of 3 in December transforms into the following instructions:
Ensure safety - Imperative it is to shield skin and eyes from damage. When the Sun is at its strongest around midday, find shade and limit exposure. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Sand City, CA
- Average high temperature in December: 57.2°F
The warmest month (with the highest average high temperature) is September (72.5°F).
The month with the lowest average high temperature is December (57.2°F).
- Average low temperature in December: 46.4°F
The months with the highest average low temperature are August and September (55.2°F).
The coldest month (with the lowest average low temperature) is February (46°F).
Average pressure in December
Sand City, CA
- Average pressure in December: 30.11"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is September (29.92"Hg).
Average wind speed in December
Sand City, CA
- Average wind speed in December: 6.4mph
The windiest months (with the highest average wind speed) are April and May (7.5mph).
The calmest month (with the lowest average wind speed) is August (5.6mph).
Average humidity in December
Sand City, CA
- Average humidity in December: 71%
The months with the highest relative humidity are March and May (76%).
The month with the lowest relative humidity is November (68%).
Average rainfall in December
Sand City, CA
- Average rainfall in December: 2.4"
The wettest month (with the highest rainfall) is December (2.4").
The driest months (with the least rainfall) are July and August (0.08").
Average rainfall days in December
Sand City, CA
- Average rainfall days in December: 9.9 days
The month with the highest number of rainy days is March (12.5 days).
The month with the least rainy days is August (1.1 days).
Average daylight in December /
Average sunshine in December
Sand City, CA
- Average daylight in December: 9h and 42min
The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in December: 6h
The month with the most sunshine is July (Average sunshine: 12h).
The month with the least sunshine is December (Average sunshine: 6h).
Average sunshine days in December
Sand City, CA
- Average sunshine days in December: 20 days
The month with the most sunshine days is July (27.3 days).
The month with the least sunshine days is March (16.8 days).
Average UV index in December
Sand City, CA
- Average UV index in December: 3
The months with the highest UV index are June, July, August and September (UV index 5).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in December
Sand City, CA
- Average cloud cover in December: 32
The month with the most cloud cover is March (Cloud cover 34).
The month with the least cloud cover is July (Cloud cover 9).
Average visibility in December
Sand City, 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).
