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 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
The coldest time of the year is December, with temperatures averaging a high of 60.6°F (15.9°C) and a low of 48.6°F (9.2°C).Humidity
The average relative humidity in December is 60%.Rainfall
In Isla Vista, in December, during 5.7 rainfall days, 1.34" (34mm) of precipitation is typically accumulated. In Isla Vista, during the entire year, the rain falls for 43.7 days and collects up to 7.68" (195mm) of precipitation.Ocean temperature
In Isla Vista, California, in December, the average water temperature is 58.5°F (14.7°C).Note: Beware when you're in 58.5°F (14.7°C) waters; 55.4°F (13°C) is chilling and anything below 50°F (10°C) could cause breathing hindrance and a sudden cold shock, given your physical condition.
Daylight
With an average of 9h and 54min of daylight, December has the shortest days of the year in Isla Vista, California.On the first day of the month, sunrise is at 6:48 am and sunset at 4:49 pm. On the last day of December, sunrise is at 7:05 am and sunset at 4:59 pm PST.
Sunshine
In Isla Vista, California, the average sunshine in December is 6.8h.UV index
January through March, November and December, with an average maximum UV index of 4, are months with the lowest UV index. A UV Index of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: The maximum UV index of 4 during December leads to these instructions:
Exercise caution. Those with pale skin may experience burns in less than half an hour. It's recommended to limit sun exposure when its radiation is at its peak during midday. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.
Frequently asked questions
What time of the year is the coldest in Isla Vista?
What is the usual temperature for Isla Vista in December?
What is the average humidity in December in Isla Vista?
How much does it rain in Isla Vista in December?
What is the ocean temperature in December in Isla Vista?
What is the month with the shortest days in Isla Vista?
How many hours of daylight does Isla Vista have in December?
What time are sunrise and sunset in December in Isla Vista?
How many hours of sunshine does Isla Vista have in December?
What are the months with the lowest UV index in Isla Vista?
What is the UV index intensity in December in Isla Vista?
Average temperature in December
Isla Vista, CA
- Average high temperature in December: 60.6°F
The warmest month (with the highest average high temperature) is August (79.2°F).
The month with the lowest average high temperature is December (60.6°F).
- Average low temperature in December: 48.6°F
The month with the highest average low temperature is August (62.1°F).
The coldest month (with the lowest average low temperature) is February (47.7°F).
Average pressure in December
Isla Vista, CA
- Average pressure in December: 30.08"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.91"Hg).
Average wind speed in December
Isla Vista, CA
- Average wind speed in December: 6.6mph
The windiest month (with the highest average wind speed) is April (8.1mph).
The calmest month (with the lowest average wind speed) is July (5.6mph).
Average humidity in December
Isla Vista, CA
- Average humidity in December: 60%
The month with the highest relative humidity is March (64%).
The months with the lowest relative humidity are September, October and November (56%).
Average rainfall in December
Isla Vista, CA
- Average rainfall in December: 1.34"
The wettest month (with the highest rainfall) is January (1.57").
The driest months (with the least rainfall) are June and August (0.08").
Average rainfall days in December
Isla Vista, CA
- Average rainfall days in December: 5.7 days
The month with the highest number of rainy days is March (7.3 days).
The month with the least rainy days is June (1.2 days).
Average sea temperature in December
Isla Vista, CA
- Average sea temperature in December: 58.5°F
The best month for swimming (with the highest average sea temperature) is August (62.2°F).
The coldest month (with the lowest average sea temperature) is April (55.7°F).
Average daylight in December /
Average sunshine in December
Isla Vista, CA
- Average daylight in December: 9h and 5min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in December: 6h and 5min
The months with the most sunshine are June and July (Average sunshine: 12h and 0min).
The month with the least sunshine is February (Average sunshine: 6h and 36min).
Average sunshine days in December
Isla Vista, CA
- Average sunshine days in December: 24.6 days
The month with the most sunshine days is August (28 days).
The month with the least sunshine days is February (21.6 days).
Average UV index in December
Isla Vista, CA
- Average UV index in December: 4
The months with the highest UV index are June, 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
Isla Vista, CA
- Average cloud cover in December: 22
The month with the most cloud cover is March (Cloud cover 23).
The month with the least cloud cover is August (Cloud cover 5).
Average visibility in December
Isla Vista, 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).
Isla Vista, California, USA
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