December weather forecast and climate
Newport Beach, CA

A bird
A bird's eye view of the stunning coastal village of Corona Del Mar, in Newport Beach, California, with cruise boats on the clear blue waters and beaches around the village
December, the first month of the winter, in Newport Beach, is also a comfortable month, with average temperature ranging between max 63.1°F (17.3°C) and min 49.3°F (9.6°C).

Temperature

In Newport Beach, California, in December, the average high-temperature is 63.1°F (17.3°C), and the average low-temperature is 49.3°F (9.6°C).

Rainfall

In Newport Beach, during December, the rain falls for 5 days and regularly aggregates up to 1.8" (46.2mm) of precipitation. In Newport Beach, during the entire year, the rain falls for 32 days and collects up to 10.6" (269.8mm) of precipitation.

Ocean temperature

In Newport Beach, in December, the average water temperature 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).

Daylight

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

Sunshine

January, November and December, with an average of 7h of sunshine, are months with the least sunshine.

UV index

Months with the lowest UV index in Newport Beach are January and December, with an average maximum UV index of 3. A UV Index value of 3 to 5 symbolizes a moderate health risk from unsafe exposure to the UV radiation for ordinary individuals.
The average daily UV index of 3 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. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.

What is the temperature in December in Newport Beach?

The average high-temperature, in December, in Newport Beach, is 63.1°F (17.3°C), while the average low-temperature is 49.3°F (9.6°C).

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

In Newport Beach, during December, the rain falls for 5 days and regularly aggregates up to 1.8" (46.2mm) of precipitation.

What is the ocean temperature in December in Newport Beach?

In December, the average ocean temperature in Newport Beach, California, 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?

The month with the shortest days in Newport Beach is December, with an average of 10h of daylight.

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

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

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

January, November and December, with an average of 7h of sunshine, are months with the least sunshine in Newport Beach, California.

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

The average sunshine in December in Newport Beach, California, is 7h.

When is the lowest UV index in Newport Beach?

January and December, with an average maximum UV index of 3, are months with the lowest UV index in Newport Beach, California.

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

In December, the average daily maximum UV index in Newport Beach, California, is 3. A UV Index of 3 to 5 symbolizes a medium hazard to health from the exposure to the Sun's UV radiation.
Average temperature in December - Newport Beach, CA
  • Average high temperature in December: 63.2°F

The warmest month (with the highest average high temperature) is August (72.2°F).
The month with the lowest average high temperature is March (62.7°F).

  • Average low temperature in December: 49.3°F

The month with the highest average low temperature is August (64.9°F).
The coldest month (with the lowest average low temperature) is December (49.3°F).

Average rainfall in December - Newport Beach, CA
  • Average rainfall in December: 1.8"

The wettest month (with the highest rainfall) is February (2.6").
Driest months (with the lowest rainfall) are July and August (0").

Average rainfall days in December - Newport Beach, CA
  • Average rainfall days in December: 5 days

The month with the highest number of rainy days is March (6 days).
Months with the lowest number of rainy days are June, July and August (0 days).

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

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

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

  • Average sunshine in December: 7h

Months with most sunshine are July and August (Average sunshine: 11h).
Months with least sunshine are January, November and December (Average sunshine: 7).

Average UV index in December - Newport Beach, CA
  • Average UV index in December: 3

Months with the highest UV index are June, July and August (UV index 10).
Months with the lowest UV index are January and December (UV index 3).

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