December weather forecast
Long Beach, CA

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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

December brings winter to Long Beach, California. The onset of chilly weather, pleasant sunshine during the day, and cool breezes at night make this month quite enjoyable. December shows an impressive range of temperatures, varying between 52.7°F (11.5°C) and 63.5°F (17.5°C). As the city moves from December to a new calendar year, the expectation centers around experiencing similar cool and mild winter weather once again. December's brisk weather, complemented by festive holiday lights, fills Long Beach, California with a vibrant winter charm.

Temperature

In Long Beach, December records the lowest average temperatures, peaking at 63.5°F (17.5°C) and reaching a low of 52.7°F (11.5°C).

Humidity

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

Rainfall

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

Ocean temperature

In Long Beach, in December, the average water temperature is 60.4°F (15.8°C).
Note: In water with a temperature of 60.4°F (15.8°C), most individuals do not find swimming enjoyable. As the temperature falls from 69.8°F (21°C) to 59°F (15°C), breathing control becomes more difficult.

Daylight

The month with the shortest days in Long Beach is December, with an average of 10h and 0min of daylight.
On the first day of December in Long Beach, sunrise is at 6:40 am and sunset at 4:44 pm. On the last day of the month, sunrise is at 6:57 am and sunset at 4:54 pm PST.

Sunshine

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

UV index

The 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 estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for the ordinary person.
Note: The maximum daily UV index of 4 during December translates into the following directions:
Put precautions into practice - Guidance to elude sunburn is provided. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.

Frequently asked questions

What part of the year is the coldest in Long Beach?

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

What is the temperature in December in Long Beach?

The average high-temperature, in December, in Long Beach, is 63.5°F (17.5°C), while the average low-temperature is 52.7°F (11.5°C).

What is the average humidity in December in Long Beach?

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

What is the rainiest month in Long Beach?

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

How much does it rain in Long Beach in December?

In Long Beach, in December, during 5.1 rainfall days, 1.14" (29mm) of precipitation is typically accumulated.

How cold is the water in December in Long Beach?

In Long Beach, California, in December, the average water temperature is 60.4°F (15.8°C). 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).

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

December has the shortest days of the year, with an average of 10h and 0min of daylight.

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

In Long Beach, the average day length in December is 9h and 57min.

What time are sunrise and sunset in December in Long Beach?

In December, on the first day of the month, sunrise is at 6:40 am and sunset at 4:44 pm. On the last day of the month, sunrise is at 6:57 am and sunset at 4:54 pm PST.

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

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

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

The average sunshine duration in December in Long Beach 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.

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

In Long Beach, California, the average daily maximum UV index in December is 4. A UV Index value of 3 to 5 symbolizes a moderate health threat from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

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).

Average pressure in December
Long Beach, CA

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

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

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).

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%).

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").

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).

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).

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: 10h and 0min

The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 10h and 0min).

  • Average sunshine in December: 6h and 5min

The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The months with the least sunshine are January, February and December (Average sunshine: 6h and 48min).

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).

Average UV index in December
Long Beach, CA

Average UV index in December - Long Beach, 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, November and December (UV index 4).

Average cloud cover in December
Long Beach, CA

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

The 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).

Average visibility in December
Long Beach, CA

Average visibility in December - Long Beach, 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).

Long Beach, California, USA

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