December weather forecast and climate
Bayo Vista, CA

Weather in December

The first month of the winter, December, is still a mild month in Bayo Vista, California, with average temperature ranging between min 43.2°F (6.2°C) and max 55.4°F (13°C).

Temperature

The coldest month is December, with an average high-temperature of 55.4°F (13°C) and an average low-temperature of 43.2°F (6.2°C).

Humidity

In Bayo Vista, the average relative humidity in December is 71%.

Rainfall

In December, in Bayo Vista, California, the rain falls for 8.5 days. Throughout December, 0.79" (20mm) of precipitation is accumulated. Throughout the year, there are 56.9 rainfall days, and 4.88" (124mm) of precipitation is accumulated.

Ocean temperature

In December, the average ocean temperature in Bayo Vista is 54.1°F (12.3°C).
Note: Swimming in 54.1°F (12.3°C) is considered dangerous. Unprotected immersion in temperatures below 50°F (10°C) causes quickly maximum intensity cold shock with hyperventilation.

Daylight

December has the shortest days of the year, with an average of 9.6h of daylight.

Sunshine

The month with the least sunshine is December, with an average of 5.7h of sunshine.

UV index

Months with the lowest UV index in Bayo Vista are January, February, November and December, with an average maximum UV index of 3. A UV Index value of 3 to 5 symbolizes a medium health hazard from the exposure to the Sun's UV radiation for ordinary individuals.
Note: In December, the average maximum UV index of 3 translate into the following recommendations:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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FAQ

What is the coldest month in Bayo Vista?

With an average high-temperature of 55.4°F (13°C) and an average low-temperature of 43.2°F (6.2°C), December is the coldest month in Bayo Vista.

What is the temperature in December in Bayo Vista?

In December, the average high-temperature is 55.4°F (13°C), and the average low-temperature is 43.2°F (6.2°C).

What is the average humidity in December in Bayo Vista?

The average relative humidity in December in Bayo Vista, California, is 71%.

How many days does it rain in December in Bayo Vista?

In Bayo Vista, in December, it is raining for 8.5 days, with typically 0.79" (20mm) of accumulated precipitation.

How cold is the water in December in Bayo Vista?

In December, the average ocean temperature in Bayo Vista, California, is 54.1°F (12.3°C). At temperatures below 50°F (10°C), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 55.4°F (13°C) is not comfortable.

What is the month with the shortest days in Bayo Vista?

The month with the shortest days in Bayo Vista is December, with an average of 9.6h of daylight.

How many hours of daylight does Bayo Vista have in December?

In Bayo Vista, the average length of the day in December is 9.6h.

What is the month with the least sunshine in Bayo Vista?

December has the least sunshine of the year, with an average of 5.7h of sunshine.

How long on average sun shines in December in Bayo Vista?

In Bayo Vista, the average sunshine in December is 5.7h.

When is the lowest UV index in Bayo Vista?

Months with the lowest UV index in Bayo Vista are January, February, November and December, with an average maximum UV index of 3.

What is the UV index reading in December in Bayo Vista?

In Bayo Vista, the average daily maximum UV index in December is 3. A UV Index value of 3 to 5 symbolizes a medium health risk from unprotected exposure to the UV radiation.

Average temperature in December
Bayo Vista, CA

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).

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Average pressure in December
Bayo Vista, CA

Average pressure in December - Bayo Vista, CA
  • Average pressure in December: 30.11"

The month with the highest atmospheric pressure is January (30.14").
The month with the lowest atmospheric pressure is June (29.91").

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Average wind speed in December
Bayo Vista, CA

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).

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Average humidity in December
Bayo Vista, CA

Average humidity in December - Bayo Vista, CA
  • Average humidity in December: 71%

The month with the highest relative humidity is March (75%).
Months with the lowest relative humidity are September and October (60%).

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Average rainfall in December
Bayo Vista, CA

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").

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Average rainfall days in December
Bayo Vista, CA

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).

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Average sea temperature in December
Bayo Vista, CA

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).

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Average daylight in December /
Average sunshine in December
Bayo Vista, CA

Average daylight in December / Average sunshine in December - Bayo Vista, CA
  • Average daylight in December: 9.6h

The month with the longest days is June (Average daylight: 14.8h).
The month with the shortest days is December (Average daylight: 9.6h).

  • Average sunshine in December: 5.7h

The month with the most sunshine is July (Average sunshine: 12h).
The month with the least sunshine is December (Average sunshine: 5.7h).

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Average sunshine days in December
Bayo Vista, CA

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).

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Average UV index in December
Bayo Vista, CA

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).
Months with the lowest UV index are January, February, November and December (UV index 3).

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Average cloud cover in December
Bayo Vista, CA

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).

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Average visibility in December
Bayo Vista, CA

Average visibility in December - Bayo Vista, CA
  • Average visibility in December: 6mi

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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