December weather forecast
Laguna Beach, CA

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The scenic Three Arch Bay spot on Laguna Beach in California
The scenic Three Arch Bay spot on Laguna Beach in California

Weather in December

December, the first month of the winter in Laguna Beach, is also an enjoyable month, with an average temperature varying between 50.5°F (10.3°C) and 62.4°F (16.9°C).

Temperature

December is the month that records the lowest temperatures, with averages ranging from a high of 62.4°F (16.9°C) to a low of 50.5°F (10.3°C).

Humidity

The average relative humidity in December is 62%.

Rainfall

The month with the most rainfall is December, when the rain falls for 6.8 days and typically aggregates up to 1.85" (47mm) of precipitation.

Ocean temperature

In Laguna Beach, in December, the average water temperature is 60.3°F (15.7°C).
Note: For the majority of people, swimming in water at 60.3°F (15.7°C) is not enjoyable. The challenge of controlling breathing escalates as the temperature decreases from 69.8°F (21°C) to 59°F (15°C).

Daylight

With an average of 10h and 0min of daylight, December has the shortest days of the year.
On the first day of December in Laguna Beach, sunrise is at 6:37 am and sunset at 4:43 pm. On the last day of the month, sunrise is at 6:55 am and sunset at 4:53 pm PST.

Sunshine

December has the least sunshine of the year, with an average of 6.4h of sunshine.

UV index

January through March, November and December, with an average maximum UV index of 4, are months with the lowest UV index. A UV Index of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In December, the maximum UV index of 4 translates into these guidelines:
Take necessary precautions - Protection from skin and eye injury is mandatory. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. Boost your sun resistance with garments that are densely woven yet spacious.
Updated: Jun 17, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the coldest time of year?

In Laguna Beach, the average lowest temperatures are observed in December, with a high of 62.4°F (16.9°C) and a low of 50.5°F (10.3°C).

What is the usual temperature for Laguna Beach in December?

An average high-temperature, in December, in Laguna Beach, is 62.4°F (16.9°C) and the average low-temperature is 50.5°F (10.3°C).

What is the average humidity in December?

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

What is the wettest month?

The month with the most rainfall is December, when the rain falls for 6.8 days and typically aggregates up to 1.85" (47mm) of precipitation.

How many days does it rain in December?

In Laguna Beach, in December, it is raining for 6.8 days, with typically 1.85" (47mm) of accumulated precipitation.

What is the ocean temperature in December?

In Laguna Beach, the average seawater temperature in December is 60.3°F (15.7°C). For swimming, a surface water temperature of 60.3°F (15.7°C) is not enjoyable for the majority. It is not considered safe, as controlling breathing becomes progressively more difficult as water temperature decreases below 69.8°F (21°C).

What is the month with the shortest days?

The month with the shortest days is December, with an average of 10h and 0min of daylight.

What is the average length of the day in December?

In December, the average day length is 9h and 58min.

What time are sunrise and sunset in December?

On the first day of December in Laguna Beach, sunrise is at 6:37 am and sunset at 4:43 pm. On the last day of the month, sunrise is at 6:55 am and sunset at 4:53 pm PST.

What is the month with the least sunshine?

With an average of 6.4h of sunshine, December has the least sunshine of the year.

How long on average sun shines in December?

In December, the average sunshine duration is 6.4h.

What are the months with the lowest UV index?

The 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 December, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a moderate vulnerability from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Laguna Beach, CA

Average temperature in December - Laguna Beach, CA
  • Average high temperature in December: 62.4°F

The warmest month (with the highest average high temperature) is September (77.4°F).
The month with the lowest average high temperature is December (62.4°F).

  • Average low temperature in December: 50.5°F

The month with the highest average low temperature is August (63.3°F).
The coldest month (with the lowest average low temperature) is February (50°F).

Average pressure in December
Laguna Beach, CA

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

The month with the highest atmospheric pressure is January (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).

Average wind speed in December
Laguna Beach, CA

Average wind speed in December - Laguna Beach, CA
  • Average wind speed in December: 5.4mph

The windiest month (with the highest average wind speed) is April (6.3mph).
The calmest months (with the lowest average wind speed) are August, September and October (5mph).

Average humidity in December
Laguna Beach, CA

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

The month with the highest relative humidity is June (74%).
The month with the lowest relative humidity is November (59%).

Average rainfall in December
Laguna Beach, CA

Average rainfall in December - Laguna Beach, CA
  • Average rainfall in December: 1.85"

The wettest month (with the highest rainfall) is December (1.85").
The driest month (with the least rainfall) is June (0.12").

Average rainfall days in December
Laguna Beach, CA

Average rainfall days in December - Laguna Beach, CA
  • Average rainfall days in December: 6.8 days

The month with the highest number of rainy days is March (7.8 days).
The month with the least rainy days is June (3 days).

Average sea temperature in December
Laguna Beach, CA

Average sea temperature in December - Laguna Beach, CA
  • Average sea temperature in December: 60.3°F

The best months for swimming (with the highest average sea temperature) are July and August (67.7°F).
The coldest month (with the lowest average sea temperature) is January (58.5°F).

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

Average daylight in December / Average sunshine in December - Laguna Beach, CA
  • Average daylight in December: 10h and 0min

The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).

  • Average sunshine in December: 6h and 2min

The month with the most sunshine is August (Average sunshine: 11h and 54min).
The month with the least sunshine is December (Average sunshine: 6h and 24min).

Average sunshine days in December
Laguna Beach, CA

Average sunshine days in December - Laguna Beach, CA
  • Average sunshine days in December: 22.8 days

The month with the most sunshine days is January (24.7 days).
The month with the least sunshine days is May (19.5 days).

Average UV index in December
Laguna Beach, CA

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

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

Average cloud cover in December
Laguna Beach, CA

Average cloud cover in December - Laguna Beach, CA
  • Average cloud cover in December: 26

The month with the most cloud cover is March (Cloud cover 27).
The month with the least cloud cover is August (Cloud cover 11).

Average visibility in December
Laguna Beach, CA

Average visibility in December - Laguna 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).

Laguna Beach, California, USA

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