December weather forecastBayo Vista, CA
December
Weather in December
December, the first month of the winter in Bayo Vista, is still a mild month, with an average temperature ranging between min 43.2°F (6.2°C) and max 55.4°F (13°C).Temperature
With average high and low temperatures of 55.4°F (13°C) and 43.2°F (6.2°C) respectively, December is Bayo Vista's coldest month.Humidity
In December, the average relative humidity in Bayo Vista is 71%.Rainfall
In December, in Bayo Vista, the rain falls for 8.5 days. Throughout December, 0.79" (20mm) of precipitation is accumulated. In Bayo Vista, during the entire year, the rain falls for 56.9 days and collects up to 4.88" (124mm) of precipitation.Ocean temperature
In Bayo Vista, in December, the average water temperature is 54.1°F (12.3°C).Note: Dipping into 54.1°F (12.3°C) below 50°F (10°C) is possible with the right protection; absent that, anticipate cold shock and hampered breathing. Swimming momentarily at 55.4°F (13°C) can be jarring.
Daylight
December has the shortest days of the year, with an average of 9h and 36min of daylight.On the first day of December, sunrise is at 7:07 am and sunset at 4:49 pm. On the last day of the month, sunrise is at 7:25 am and sunset at 4:59 pm PST.
Sunshine
With an average of 5.7h of sunshine, December has the least sunshine of the year in Bayo Vista.UV index
January, February, November and December, with an average maximum UV index of 3, are months with the lowest UV index in Bayo Vista, California. A UV Index reading of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: During December, 3 as the daily maximum UV index converts into the following advice:
Prioritize safety - The need to safeguard skin and eyes from harm is emphasized. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Bayo Vista, CA
- Average high temperature in December: 55.4°F
The warmest months (with the highest average high temperature) are July and September (80.1°F).
The month with the lowest average high temperature is December (55.4°F).
- Average low temperature in December: 43.2°F
The month with the highest average low temperature is August (56.5°F).
The coldest month (with the lowest average low temperature) is January (43°F).
Average pressure in December
Bayo Vista, CA
- Average pressure in December: 30.11"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in December
Bayo Vista, CA
- Average wind speed in December: 5.2mph
The windiest month (with the highest average wind speed) is May (7.1mph).
The calmest month (with the lowest average wind speed) is November (4.6mph).
Average humidity in December
Bayo Vista, CA
- Average humidity in December: 71%
The month with the highest relative humidity is March (75%).
The months with the lowest relative humidity are September and October (60%).
Average rainfall in December
Bayo Vista, CA
- Average rainfall in December: 0.79"
The wettest month (with the highest rainfall) is February (1.14").
The driest months (with the least rainfall) are July and August (0.04").
Average rainfall days in December
Bayo Vista, CA
- Average rainfall days in December: 8.5 days
The month with the highest number of rainy days is March (10.2 days).
The month with the least rainy days is August (0.9 days).
Average sea temperature in December
Bayo Vista, CA
- Average sea temperature in December: 54.2°F
The best month for swimming (with the highest average sea temperature) is September (57°F).
The coldest month (with the lowest average sea temperature) is April (52.6°F).
Average daylight in December /
Average sunshine in December
Bayo Vista, CA
- Average daylight in December: 9h and 36min
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 36min).
- Average sunshine in December: 5h and 42min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).
Average sunshine days in December
Bayo Vista, CA
- Average sunshine days in December: 20.8 days
The month with the most sunshine days is July (27.2 days).
The month with the least sunshine days is March (18.8 days).
Average UV index in December
Bayo Vista, CA
- Average UV index in December: 3
The month with the highest UV index is June (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in December
Bayo Vista, CA
- Average cloud cover in December: 36
The month with the most cloud cover is March (Cloud cover 37).
The month with the least cloud cover is July (Cloud cover 9).
Average visibility in December
Bayo 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).
