December weather forecast and climate
Newport Beach, CA

The stunning coastal village of Corona Del Mar, in Newport Beach, California
The stunning coastal village of Corona Del Mar, in Newport Beach, California

Weather in December

December, the first month of the winter, in Newport Beach, is also an enjoyable month, with average temperature fluctuating between 62.4°F (16.9°C) and 53.1°F (11.7°C).

Temperature

The coldest month is December, with an average high-temperature of 62.4°F (16.9°C) and an average low-temperature of 53.1°F (11.7°C).

Humidity

The average relative humidity in Newport Beach is 61%.

Rainfall

The month with the most rainfall in Newport Beach is December when the rain falls for 6.2 days and typically aggregates up to 0.79" (20mm) of precipitation.

Ocean temperature

In Newport Beach, the average seawater temperature in December is 60.3°F (15.7°C).
Note: Swimming in 60.3°F (15.7°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

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

Sunshine

The month with the least sunshine in Newport Beach is December, with an average of 6.6h 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 reading of 3 to 5 represents a medium health hazard from unsafe exposure to the UV radiation for average individuals.
Note: The daily maximum UV index of 4 interpret into the following advice:
Take precautions - Protection against sun damage is advised. 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 Newport Beach?

December is the coldest month, with an average high-temperature of 62.4°F (16.9°C) and an average low-temperature of 53.1°F (11.7°C).

What is the temperature in December in Newport Beach?

In Newport Beach, California, in December, the average high-temperature is 62.4°F (16.9°C), and the average low-temperature is 53.1°F (11.7°C).

What is the average humidity in December in Newport Beach?

In Newport Beach, California, the average relative humidity in December is 61%.

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

In Newport Beach, California, during December, the rain falls for 6.2 days and regularly aggregates up to 0.79" (20mm) of precipitation.

What is the wettest month in Newport Beach?

December is the month with the most rainfall in Newport Beach, California. Rain falls for 6.2 days and accumulates 0.79" (20mm) of precipitation.

How cold is the water in December in Newport Beach?

In December, the average ocean temperature in Newport Beach is 60.3°F (15.7°C). For most, swimming in 60.3°F (15.7°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 Newport Beach?

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

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

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

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

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

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

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

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

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

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

In December, the average daily maximum UV index in Newport Beach, California, is 4. A UV Index reading of 3 to 5 represents a medium hazard to health from unsafe exposure to the Sun's UV rays.

Average temperature in December
Newport Beach, CA

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

The warmest month (with the highest average high temperature) is August (76.6°F).
The month with the lowest average high temperature is December (62.4°F).

  • Average low temperature in December: 53.1°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 (52.3°F).

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Average pressure in December
Newport Beach, CA

Average pressure in December - Newport 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
Newport Beach, CA

Average wind speed in December - Newport Beach, CA
  • Average wind speed in December: 5.7mph

The windiest month (with the highest average wind speed) is April (6.6mph).
The calmest month (with the lowest average wind speed) is October (5.2mph).

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Average humidity in December
Newport Beach, CA

Average humidity in December - Newport Beach, CA
  • Average humidity in December: 61%

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

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Average rainfall in December
Newport Beach, CA

Average rainfall in December - Newport Beach, CA
  • Average rainfall in December: 0.79"

The wettest month (with the highest rainfall) is December (0.79").
The driest month (with the least rainfall) is June (0.04").

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Average rainfall days in December
Newport Beach, CA

Average rainfall days in December - Newport Beach, CA
  • Average rainfall days in December: 6.2 days

The month with the highest number of rainy days is March (6.6 days).
The month with the least rainy days is June (1.6 days).

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Average sea temperature in December
Newport Beach, CA

Average sea temperature in December - Newport 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).

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

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

The month with the longest days is June (Average daylight: 14.4h).
The month with the shortest days is December (Average daylight: 10h).

  • Average sunshine in December: 6.6h

The month with the most sunshine is August (Average sunshine: 12h).
The month with the least sunshine is December (Average sunshine: 6.6h).

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Average sunshine days in December
Newport Beach, CA

Average sunshine days in December - Newport Beach, CA
  • Average sunshine days in December: 23.6 days

The month with the most sunshine days is June (26.5 days).
The month with the least sunshine days is February (20.5 days).

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Average UV index in December
Newport Beach, CA

Average UV index in December - Newport 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
Newport Beach, CA

Average cloud cover in December - Newport Beach, CA
  • Average cloud cover in December: 24

Months with the most cloud cover are March and December (Cloud cover 24).
The month with the least cloud cover is August (Cloud cover 8).

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Average visibility in December
Newport Beach, CA

Average visibility in December - Newport 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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