December weather forecastTrinidad, CA
December
Weather in December
The first month of the winter, December, is also a fresh month in Trinidad, California, with an average temperature varying between 52.7°F (11.5°C) and 42.4°F (5.8°C).Temperature
In Trinidad, the lowest temperatures are generally noted in December, averaging a high of 52.7°F (11.5°C) and a low of 42.4°F (5.8°C).Humidity
In Trinidad, the average relative humidity in December is 78%.Rainfall
December is the month with the most rainfall. Rain falls for 15.6 days and accumulates 5.87" (149mm) of precipitation.Snowfall
January, March through December are months without snowfall in Trinidad, California.Ocean temperature
In Trinidad, California, in December, the average water temperature is 52.3°F (11.3°C).Note: Taking a dip in 52.3°F (11.3°C) can be perilous. Submersion in temperatures under 50°F (10°C) triggers severe cold shock accompanied by hyperventilation.
Daylight
The month with the shortest days in Trinidad, California, is December, with an average of 9h and 18min of daylight.On the first day of December, sunrise is at 7:23 am and sunset at 4:48 pm. On the last day of the month, sunrise is at 7:41 am and sunset at 4:58 pm PST.
Sunshine
January and December, with an average of 5.1h of sunshine, are months with the least sunshine.UV index
January through March, November and December, with an average maximum UV index of 3, are months with the lowest UV index. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for ordinary individuals.Note: The maximum daily UV index of 3 in December interprets into the following recommendations:
Make use of precautions - Shielding skin and eyes from injury is a requirement. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses. Be watchful! The reflection of snow can enhance the intensity of the Sun's UV radiation nearly double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Trinidad, CA
- Average high temperature in December: 52.7°F
The warmest month (with the highest average high temperature) is August (68.9°F).
The month with the lowest average high temperature is December (52.7°F).
- Average low temperature in December: 42.4°F
The month with the highest average low temperature is August (51.4°F).
The coldest month (with the lowest average low temperature) is February (41.7°F).
Average pressure in December
Trinidad, 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 August (29.97"Hg).
Average wind speed in December
Trinidad, CA
- Average wind speed in December: 7.7mph
The windiest month (with the highest average wind speed) is March (8.4mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).
Average humidity in December
Trinidad, CA
- Average humidity in December: 78%
The month with the highest relative humidity is March (82%).
The months with the lowest relative humidity are September and October (76%).
Average rainfall in December
Trinidad, CA
- Average rainfall in December: 5.87"
The wettest month (with the highest rainfall) is December (5.87").
The driest month (with the least rainfall) is July (0.08").
Average rainfall days in December
Trinidad, CA
- Average rainfall days in December: 15.6 days
The month with the highest number of rainy days is March (16.8 days).
The months with the least rainy days are July and August (2.2 days).
Average snowfall in December
Trinidad, CA
- Average snowfall in December: 0"
The month with the highest snowfall is February (0.39").
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
Trinidad, 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 sea temperature in December
Trinidad, CA
- Average sea temperature in December: 52.4°F
The best month for swimming (with the highest average sea temperature) is October (53°F).
The coldest months (with the lowest average sea temperature) are January, February and April (51.4°F).
Average daylight in December /
Average sunshine in December
Trinidad, CA
- Average daylight in December: 9h and 18min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in December: 5h and 6min
The month with the most sunshine is July (Average sunshine: 11h and 30min).
The months with the least sunshine are January and December (Average sunshine: 5h and 6min).
Average sunshine days in December
Trinidad, CA
- Average sunshine days in December: 14.7 days
The months with the most sunshine days are July and August (28 days).
The month with the least sunshine days is March (12.5 days).
Average UV index in December
Trinidad, 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
Trinidad, CA
- Average cloud cover in December: 45
The month with the most cloud cover is March (Cloud cover 48).
The months with the least cloud cover are July and August (Cloud cover 18).
Average visibility in December
Trinidad, CA
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).
