December weather forecastSan Pedro, CA
December
Weather in December
December, the first month of the winter in San Pedro, is still a refreshing month, with an average temperature varying between 53.8°F (12.1°C) and 62.4°F (16.9°C).Temperature
With an average high-temperature of 62.4°F (16.9°C) and an average low-temperature of 53.8°F (12.1°C), December is the coldest month.Humidity
The average relative humidity in December in San Pedro, California, is 60%.Rainfall
In San Pedro, in December, during 5.9 rainfall days, 1.22" (31mm) of precipitation is typically accumulated. Throughout the year, in San Pedro, there are 57.9 rainfall days, and 6.65" (169mm) of precipitation is accumulated.Daylight
December has the shortest days of the year, with an average of 10h and 0min of daylight.On the first day of the month, sunrise is at 6:40 am and sunset at 4:44 pm. On the last day of December, in San Pedro, sunrise is at 6:57 am and sunset at 4:55 pm PST.
Sunshine
December has the least sunshine of the year, with an average of 6.7h of sunshine.UV index
The months with the lowest UV index in San Pedro are January through March, November and December, with an average maximum UV index of 4. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: A maximum daily UV index of 4 during December morphs into the following directions:
Take necessary precautions - Protection from skin and eye injury is mandatory. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
San Pedro, CA
- Average high temperature in December: 62.4°F
The warmest months (with the highest average high temperature) are August and September (75.9°F).
The month with the lowest average high temperature is December (62.4°F).
- Average low temperature in December: 53.8°F
The month with the highest average low temperature is September (64.2°F).
The coldest month (with the lowest average low temperature) is February (52.7°F).
Average pressure in December
San Pedro, CA
- Average pressure in December: 30.07"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
San Pedro, CA
- Average wind speed in December: 6mph
The windiest month (with the highest average wind speed) is April (7mph).
The calmest month (with the lowest average wind speed) is September (5.3mph).
Average humidity in December
San Pedro, CA
- Average humidity in December: 60%
The month with the highest relative humidity is June (75%).
The month with the lowest relative humidity is November (58%).
Average rainfall in December
San Pedro, CA
- Average rainfall in December: 1.22"
The wettest month (with the highest rainfall) is January (1.3").
The driest month (with the least rainfall) is June (0.12").
Average rainfall days in December
San Pedro, 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 (3 days).
Average daylight in December /
Average sunshine in December
San Pedro, CA
- Average daylight in December: 10h and 0min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in December: 6h and 42min
The month with the most sunshine is August (Average sunshine: 11h and 54min).
The month with the least sunshine is December (Average sunshine: 6h and 42min).
Average sunshine days in December
San Pedro, CA
- Average sunshine days in December: 23.2 days
The month with the most sunshine days is January (24.2 days).
The month with the least sunshine days is June (17.7 days).
Average UV index in December
San Pedro, 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
San Pedro, CA
- Average cloud cover in December: 23
The month with the most cloud cover is December (Cloud cover 23).
The month with the least cloud cover is August (Cloud cover 9).
Average visibility in December
San Pedro, 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).
