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 sea temperature 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
Sea Ranch experiences its lowest temperatures in December, with an average peak of 54.7°F (12.6°C) and a low of 39.9°F (4.4°C).Humidity
In December, the average relative humidity in Sea Ranch is 76%.Rainfall
In Sea Ranch, California, during December, the rain falls for 11.8 days and regularly aggregates up to 3.54" (90mm) of precipitation. In Sea Ranch, California, during the entire year, the rain falls for 83.1 days and collects up to 21.38" (543mm) of precipitation.Snowfall
In Sea Ranch, snow does not fall in January, March through December.Ocean temperature
In December, the average ocean temperature is 54°F (12.2°C).Note: Entering waters of 54°F (12.2°C) is life-endangering. A mere moment in 55.4°F (13°C) waters feels piercing cold, and below 50°F (10°C) it can lead to immediate cold shock and cessation of breathing control, depending on body resilience.
Daylight
December has the shortest days of the year in Sea Ranch, with an average of 9h and 30min of daylight.On the first day of the month, sunrise is at 7:13 am and sunset at 4:52 pm. On the last day of December, in Sea Ranch, sunrise is at 7:31 am and sunset at 5:02 pm PST.
Sunshine
The month with the least sunshine in Sea Ranch is December, with an average of 5.4h of sunshine.UV index
The months with the lowest UV index are February, 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 the average person.Note: A maximum high daily UV index of 3 during December translates into the following directions:
Adopt protective measures - Requirement to safeguard skin and eyes from harm exists. Around midday, solar radiation is most harmful; hence, exposure should be limited. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun.
Frequently asked questions
What is the coldest month in Sea Ranch?
What are December temperatures in Sea Ranch?
What is the average humidity in December in Sea Ranch?
How much does it rain in Sea Ranch in December?
When it does not snow in Sea Ranch?
What is the ocean temperature in December in Sea Ranch?
What is the month with the shortest days in Sea Ranch?
How many hours of daylight does Sea Ranch have in December?
When is the sunrise / sunset in December in Sea Ranch?
What is the month with the least sunshine in Sea Ranch?
How many hours of sunshine does Sea Ranch have in December?
What is the month with the lowest UV index in Sea Ranch?
What is the UV index intensity in December in Sea Ranch?
Average temperature in December
Sea Ranch, CA
- Average high temperature in December: 54.7°F
The warmest month (with the highest average high temperature) is August (83.5°F).
The month with the lowest average high temperature is December (54.7°F).
- Average low temperature in December: 39.9°F
The month with the highest average low temperature is August (54.1°F).
The coldest month (with the lowest average low temperature) is December (39.9°F).
Average pressure in December
Sea Ranch, CA
- Average pressure in December: 30.1"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.92"Hg).
Average wind speed in December
Sea Ranch, CA
- Average wind speed in December: 5.2mph
The windiest month (with the highest average wind speed) is May (6.8mph).
The calmest month (with the lowest average wind speed) is November (4.9mph).
Average humidity in December
Sea Ranch, CA
- Average humidity in December: 76%
The month with the highest relative humidity is March (78%).
The months with the lowest relative humidity are July and September (60%).
Average rainfall in December
Sea Ranch, CA
- Average rainfall in December: 3.54"
The wettest month (with the highest rainfall) is February (4.49").
The driest months (with the least rainfall) are July and August (0.04").
Average rainfall days in December
Sea Ranch, CA
- Average rainfall days in December: 11.8 days
The month with the highest number of rainy days is March (15 days).
The month with the least rainy days is August (0.9 days).
Average snowfall in December
Sea Ranch, CA
- Average snowfall in December: 0"
The month with the highest snowfall is February (0.2").
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
Sea Ranch, CA
- Average snowfall days in December: 0 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, November and December (0 days).
Average sea temperature in December
Sea Ranch, CA
- Average sea temperature in December: 54°F
The best month for swimming (with the highest average sea temperature) is October (56°F).
The coldest month (with the lowest average sea temperature) is June (51.9°F).
Average daylight in December /
Average sunshine in December
Sea Ranch, CA
- Average daylight in December: 9h and 3min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in December: 5h and 2min
The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 24min).
Average sunshine days in December
Sea Ranch, CA
- Average sunshine days in December: 17.5 days
The months with the most sunshine days are July and August (29.6 days).
The month with the least sunshine days is March (14.6 days).
Average UV index in December
Sea Ranch, CA
- Average UV index in December: 3
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are February, November and December (UV index 3).
Average cloud cover in December
Sea Ranch, CA
- Average cloud cover in December: 40
The month with the most cloud cover is March (Cloud cover 42).
The months with the least cloud cover are July and August (Cloud cover 6).
Average visibility in December
Sea Ranch, 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).
Sea Ranch, California, USA
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