December weather forecast and climate
Imperial Beach, CA

Weather in December

The first month of the winter, December, is still a comfortable month in Imperial Beach, California, with temperature in the range of an average high of 63.5°F (17.5°C) and an average low of 52.7°F (11.5°C).

Temperature

With an average high-temperature of 63.5°F (17.5°C) and an average low-temperature of 52.7°F (11.5°C), December is the coldest month.

Humidity

The average relative humidity in Imperial Beach is 62%.

Rainfall

The month with the most rainfall is December when the rain falls for 6.6 days and typically aggregates up to 1.42" (36mm) of precipitation.

Daylight

December has the shortest days of the year, with an average of 10h of daylight.

Sunshine

With an average of 6.6h of sunshine, December has the least sunshine of the year in Imperial Beach.

UV index

Months with the lowest UV index in Imperial Beach, California, are January through March, November and December, with an average maximum UV index of 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from the exposure to the Sun's UV radiation for average individuals.
Note: The average daily UV index of 4 in December transform into the following instructions:
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. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
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FAQ

What is the coldest month in Imperial Beach?

With an average high-temperature of 63.5°F (17.5°C) and an average low-temperature of 52.7°F (11.5°C), December is the coldest month in Imperial Beach.

What is the temperature in December in Imperial Beach?

In Imperial Beach, California, in December, the average high-temperature is 63.5°F (17.5°C), and the average low-temperature is 52.7°F (11.5°C).

What is the average humidity in December in Imperial Beach?

In December, the average relative humidity in Imperial Beach is 62%.

How much does it rain in Imperial Beach in December?

In Imperial Beach, California, in December, it is raining for 6.6 days, with typically 1.42" (36mm) of accumulated precipitation.

What is the wettest month in Imperial Beach?

The month with the most rainfall is December when the rain falls for 6.6 days and typically aggregates up to 1.42" (36mm) of precipitation.

What is the month with the shortest days in Imperial Beach?

December has the shortest days of the year in Imperial Beach, with an average of 10h of daylight.

How many hours of daylight does Imperial Beach have in December?

In Imperial Beach, California, the average length of the day in December is 10h.

What is the month with the least sunshine in Imperial Beach?

December has the least sunshine of the year in Imperial Beach, with an average of 6.6h of sunshine.

How long on average sun shines in December in Imperial Beach?

In December, the average sunshine in Imperial Beach is 6.6h.

What is the month with the lowest UV index in Imperial Beach?

Months with the lowest UV index are January through March, November and December, with an average maximum UV index of 4.

What is the UV index reading in December in Imperial Beach?

In Imperial Beach, California, the average daily maximum UV index in December is 4. A UV Index of 3 to 5 symbolizes a moderate health threat from the exposure to the Sun's UV rays.

Average temperature in December
Imperial Beach, CA

Average temperature in December - Imperial Beach, CA
  • Average high temperature in December: 63.5°F

The warmest month (with the highest average high temperature) is August (77.2°F).
The month with the lowest average high temperature is December (63.5°F).

  • Average low temperature in December: 52.7°F

The month with the highest average low temperature is August (66.6°F).
The coldest month (with the lowest average low temperature) is February (52°F).

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Average pressure in December
Imperial Beach, CA

Average pressure in December - Imperial Beach, CA
  • Average pressure in December: 30.06"

The month with the highest atmospheric pressure is January (30.09").
Months with the lowest atmospheric pressure are June and September (29.88").

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Average wind speed in December
Imperial Beach, CA

Average wind speed in December - Imperial Beach, CA
  • Average wind speed in December: 5.8mph

The windiest month (with the highest average wind speed) is April (6.6mph).
The calmest month (with the lowest average wind speed) is October (5.3mph).

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Average humidity in December
Imperial Beach, CA

Average humidity in December - Imperial Beach, CA
  • Average humidity in December: 62%

The month with the highest relative humidity is June (73%).
Months with the lowest relative humidity are January and November (60%).

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Average rainfall in December
Imperial Beach, CA

Average rainfall in December - Imperial Beach, CA
  • Average rainfall in December: 1.42"

The wettest month (with the highest rainfall) is December (1.42").
The driest month (with the least rainfall) is June (0.12").

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Average rainfall days in December
Imperial Beach, CA

Average rainfall days in December - Imperial Beach, CA
  • Average rainfall days in December: 6.6 days

The month with the highest number of rainy days is March (7.6 days).
The month with the least rainy days is June (2.5 days).

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Average daylight in December /
Average sunshine in December
Imperial Beach, CA

Average daylight in December / Average sunshine in December - Imperial Beach, CA
  • Average daylight in December: 10h

The month with the longest days is June (Average daylight: 14.3h).
The month with the shortest days is December (Average daylight: 10h).

  • Average sunshine in December: 6.6h

The month with the most sunshine is July (Average sunshine: 11.9h).
The month with the least sunshine is December (Average sunshine: 6.6h).

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Average sunshine days in December
Imperial Beach, CA

Average sunshine days in December - Imperial Beach, CA
  • Average sunshine days in December: 22.6 days

The month with the most sunshine days is June (26 days).
The month with the least sunshine days is February (20.3 days).

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Average UV index in December
Imperial Beach, CA

Average UV index in December - Imperial Beach, CA
  • Average UV index in December: 4

Months with the highest UV index are July, August and September (UV index 6).
Months with the lowest UV index are January, February, March, November and December (UV index 4).

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Average cloud cover in December
Imperial Beach, CA

Average cloud cover in December - Imperial Beach, CA
  • Average cloud cover in December: 25

Months with the most cloud cover are May and December (Cloud cover 25).
The month with the least cloud cover is August (Cloud cover 10).

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Average visibility in December
Imperial Beach, CA

Average visibility in December - Imperial Beach, 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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