December weather forecast and climate
Long Beach, CA

A colorful sunset sky over the Pacific Ocean in Long Beach, California
A colorful sunset sky over the Pacific Ocean in Long Beach, California

Weather in December

The first month of the winter, December, is also an enjoyable month in Long Beach, California, with average temperature fluctuating between 52.7°F (11.5°C) and 63.5°F (17.5°C).

Temperature

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

Humidity

In Long Beach, the average relative humidity is 58%.

Rainfall

December is the month with the most rainfall. Rain falls for 5.1 days and accumulates 1.14" (29mm) of precipitation.

Ocean temperature

In December, the average ocean temperature in Long Beach is 60.4°F (15.8°C).
Note: Swimming in 60.4°F (15.8°C) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 69.8°F (21°C).

Daylight

With an average of 9.9h of daylight, December has the shortest days of the year in Long Beach.

Sunshine

January, February and December, with an average of 6.8h of sunshine, are months with the least sunshine in Long Beach, California.

UV index

Months with the lowest UV index in Long Beach are January, February, November and December, with an average maximum UV index of 4. A UV Index reading of 3 to 5 represents a medium vulnerability from unprotected exposure to the Sun's UV rays for the ordinary person.
Note: In December, the average maximum UV index of 4 translate into the following recommendations:
Take precautions - Protection against sunburn is recommended. 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-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
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FAQ

What is the coldest month in Long 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.

What is the temperature in December in Long Beach?

In December, in Long Beach, California, 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 Long Beach?

In December, the average relative humidity in Long Beach is 58%.

How many days does it rain in December in Long Beach?

In Long Beach, during December, the rain falls for 5.1 days and regularly aggregates up to 1.14" (29mm) of precipitation.

What is the wettest month in Long Beach?

The month with the most rainfall in Long Beach, California, is December when the rain falls for 5.1 days and typically aggregates up to 1.14" (29mm) of precipitation.

What is the ocean temperature in December in Long Beach?

In December, the average ocean temperature is 60.4°F (15.8°C). For most, swimming in 60.4°F (15.8°C) is not an enjoyable activity. Furthermore, controlling your breathing becomes progressively more difficult as the water temperature decreases from 69.8°F (21°C) to 59°F (15°C).

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

December has the shortest days of the year, with an average of 9.9h of daylight.

What is the average length of the day in December in Long Beach?

The average length of the day in December in Long Beach is 9.9h.

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

January, February and December, with an average of 6.8h of sunshine, are months with the least sunshine.

How many hours of sunshine does Long Beach have in December?

In Long Beach, the average sunshine in December is 6.8h.

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

January, February, November and December, with an average maximum UV index of 4, are months with the lowest UV index in Long Beach, California.

What is the UV index intensity in December in Long Beach?

The average daily maximum UV index in December is 4. A UV Index estimate of 3 to 5 represents a moderate health threat from the exposure to the Sun's UV rays.

Average temperature in December
Long Beach, CA

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

The warmest month (with the highest average high temperature) is August (79.5°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 (64.9°F).
The coldest month (with the lowest average low temperature) is February (52°F).

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Average pressure in December
Long Beach, CA

Average pressure in December - Long Beach, CA
  • Average pressure in December: 30.07"

The month with the highest atmospheric pressure is January (30.1").
Months with the lowest atmospheric pressure are June and September (29.89").

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Average wind speed in December
Long Beach, CA

Average wind speed in December - Long Beach, CA
  • Average wind speed in December: 5.5mph

The windiest month (with the highest average wind speed) is April (6.5mph).
The calmest months (with the lowest average wind speed) are September and October (5mph).

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Average humidity in December
Long Beach, CA

Average humidity in December - Long Beach, CA
  • Average humidity in December: 58%

The month with the highest relative humidity is June (71%).
The month with the lowest relative humidity is November (55%).

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Average rainfall in December
Long Beach, CA

Average rainfall in December - Long Beach, CA
  • Average rainfall in December: 1.14"

The wettest month (with the highest rainfall) is December (1.14").
The driest month (with the least rainfall) is June (0.08").

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Average rainfall days in December
Long Beach, CA

Average rainfall days in December - Long Beach, CA
  • Average rainfall days in December: 5.1 days

The month with the highest number of rainy days is March (6 days).
The month with the least rainy days is June (1.8 days).

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Average sea temperature in December
Long Beach, CA

Average sea temperature in December - Long Beach, CA
  • Average sea temperature in December: 60.4°F

The best months for swimming (with the highest average sea temperature) are July and August (67.9°F).
The coldest month (with the lowest average sea temperature) is January (58.3°F).

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

Average daylight in December / Average sunshine in December - Long Beach, CA
  • Average daylight in December: 9.9h

The month with the longest days is June (Average daylight: 14.4h).
The month with the shortest days is December (Average daylight: 9.9h).

  • Average sunshine in December: 6.8h

Months with the most sunshine are July and August (Average sunshine: 12h).
Months with the least sunshine are January, February and December (Average sunshine: 6.8).

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Average sunshine days in December
Long Beach, CA

Average sunshine days in December - Long Beach, CA
  • Average sunshine days in December: 24.5 days

The month with the most sunshine days is January (25.7 days).
The month with the least sunshine days is June (20.8 days).

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Average UV index in December
Long Beach, CA

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

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

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Average cloud cover in December
Long Beach, CA

Average cloud cover in December - Long Beach, CA
  • Average cloud cover in December: 22

Months with the most cloud cover are March and December (Cloud cover 22).
The month with the least cloud cover is August (Cloud cover 7).

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Average visibility in December
Long Beach, CA

Average visibility in December - Long 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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