December weather forecast
East Irvine, CA

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Weather in December

December, the first month of the winter in East Irvine, is still a refreshing month, with temperature in the range of an average high of 63.1°F (17.3°C) and an average low of 50.2°F (10.1°C).

Temperature

In East Irvine, California, the month of December is known for its lowest average temperatures, reaching a high of 63.1°F (17.3°C) and a low of 50.2°F (10.1°C).

Humidity

In East Irvine, the average relative humidity in December is 59%.

Rainfall

The month with the most rainfall in East Irvine is December, when the rain falls for 7.1 days and typically aggregates up to 1.85" (47mm) of precipitation.

Daylight

December has the shortest days of the year, with an average of 10h and 0min of daylight.
On the first day of the month, sunrise is at 6:38 am and sunset at 4:42 pm. On the last day of December, in East Irvine, California, sunrise is at 6:55 am and sunset at 4:53 pm PST.

Sunshine

The month with the least sunshine 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 of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for ordinary individuals.
Note: The maximum daily UV index of 4 during December translates into the following directions:
Preventative actions are necessary - Suggestions to safeguard against sun damage are in order. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.
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Frequently asked questions

What month is the coldest in East Irvine?

December is the coldest month in East Irvine, with the temperature often reaching an average high of 63.1°F (17.3°C) and an average low of 50.2°F (10.1°C).

What are December temperatures in East Irvine?

The high-temperature in East Irvine, California, during December is 63.1°F (17.3°C) and the low-temperature is 50.2°F (10.1°C). The average heat index (a.k.a. 'real feel', 'feels like'), which represents the influence of relative humidity on air temperature, in August is evaluated at 84.2°F (29°C).

What is the average humidity in December in East Irvine?

In East Irvine, California, the average relative humidity in December is 59%.

What is the wettest month in East Irvine?

December is the month with the most rainfall in East Irvine. Rain falls for 7.1 days and accumulates 1.85" (47mm) of precipitation.

How many days does it rain in December in East Irvine?

In December, in East Irvine, California, the rain falls for 7.1 days. Throughout December, 1.85" (47mm) of precipitation is accumulated.

What is the month with the shortest days in East Irvine?

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 East Irvine?

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

When is the sunrise / sunset in December in East Irvine?

On the first day of December in East Irvine, sunrise is at 6:38 am and sunset at 4:42 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 in East Irvine?

The month with the least sunshine is December, with an average of 6.6h of sunshine.

How many hours of sunshine does East Irvine have in December?

In East Irvine, California, the average sunshine duration in December is 6.6h.

What is the month with the lowest UV index in East Irvine?

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

What is the UV index reading in December in East Irvine?

The average daily maximum UV index in December is 4. A UV Index value of 3 to 5 symbolizes a medium health risk from 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
East Irvine, CA

Average temperature in December - East Irvine, CA
  • Average high temperature in December: 63.1°F

The warmest month (with the highest average high temperature) is August (81.7°F).
The month with the lowest average high temperature is December (63.1°F).

  • Average low temperature in December: 50.2°F

The month with the highest average low temperature is August (64.8°F).
The coldest month (with the lowest average low temperature) is February (49.6°F).

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Average pressure in December
East Irvine, CA

Average pressure in December - East Irvine, CA
  • Average pressure in December: 30.07"Hg

The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).

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Average wind speed in December
East Irvine, CA

Average wind speed in December - East Irvine, CA
  • Average wind speed in December: 5mph

The windiest month (with the highest average wind speed) is April (5.8mph).
The calmest month (with the lowest average wind speed) is September (4.5mph).

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Average humidity in December
East Irvine, CA

Average humidity in December - East Irvine, CA
  • Average humidity in December: 59%

The month with the highest relative humidity is June (69%).
The month with the lowest relative humidity is November (55%).

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Average rainfall in December
East Irvine, CA

Average rainfall in December - East Irvine, 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 (0.08").

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Average rainfall days in December
East Irvine, CA

Average rainfall days in December - East Irvine, CA
  • Average rainfall days in December: 7.1 days

The month with the highest number of rainy days is March (8.4 days).
The month with the least rainy days is June (2.1 days).

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Average daylight in December /
Average sunshine in December
East Irvine, CA

Average daylight in December / Average sunshine in December - East Irvine, 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 4min

The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 6h and 36min).

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Average sunshine days in December
East Irvine, CA

Average sunshine days in December - East Irvine, CA
  • Average sunshine days in December: 22.5 days

The month with the most sunshine days is August (24.9 days).
The month with the least sunshine days is February (19.6 days).

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Average UV index in December
East Irvine, CA

Average UV index in December - East Irvine, 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, March, November and December (UV index 4).

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Average cloud cover in December
East Irvine, CA

Average cloud cover in December - East Irvine, CA
  • Average cloud cover in December: 24

The months with the most cloud cover are March and December (Cloud cover 24).
The month with the least cloud cover is August (Cloud cover 6).

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Average visibility in December
East Irvine, CA

Average visibility in December - East Irvine, 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).

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East Irvine, California, USA

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