December weather forecast
Coronado, CA

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Weather in December

December, the first month of the winter in Coronado, is also an enjoyable month, with an average temperature varying between 53.6°F and 63°F.

Temperature

Coronado's temperatures tend to hit their minimum during February and December, with an average high-temperature of 63°F.

Humidity

In Coronado, California, the average relative humidity in December is 63%.

Rainfall

December is the month with the most rainfall. Rain falls for 6.8 days and accumulates 1.81" of precipitation.

Ocean temperature

In December, the average ocean temperature is 60.4°F.
Note: Most people do not find swimming enjoyable in water of 60.4°F. The task of controlling breathing becomes tougher as the temperature drops from 69.8°F to 59°F.

Daylight

The month with the shortest days in Coronado is December, with an average of 10h and 0min of daylight.
On the first day of the month, sunrise is at 6:32 am and sunset at 4:42 pm. On the last day of December, sunrise is at 6:50 am and sunset at 4:52 pm PST.

Sunshine

With an average of 6.7h of sunshine, December has the least sunshine of the year in Coronado.

UV index

January through March, November and December, with an average maximum UV index of 4, are months with the lowest UV index in Coronado. A UV Index of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The maximum daily UV index of 4 during December translates into the following directions:
Undertake precautions - It is suggested to shield oneself from sunburn. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
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Frequently asked questions

What are the coldest months in Coronado?

February and December mark Coronado's lowest temperatures, averaging a high-temperature of 63°F.

What is the usual temperature for Coronado in December?

The high-temperature, in December, in Coronado, is 63°F, while the low-temperature averages to 53.6°F.

What is the average humidity in December in Coronado?

In Coronado, California, the average relative humidity in December is 63%.

What is the rainiest month in Coronado?

December is the month with the most rainfall. Rain falls for 6.8 days and accumulates 1.81" of precipitation.

How many days does it rain in December in Coronado?

In Coronado, in December, during 6.8 rainfall days, 1.81" of precipitation is typically accumulated.

How cold is the water in December in Coronado?

In Coronado, the average seawater temperature in December is 60.4°F. For swimming, a surface water temperature of 60.4°F 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.

What is the month with the shortest days in Coronado?

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

What is the average length of the day in December in Coronado?

In December, the average day length is 10h and 2min.

When are sunrise and sunset in December in Coronado?

In December, on the first day of the month, sunrise is at 6:32 am and sunset at 4:42 pm. On the last day of the month, in Coronado, sunrise is at 6:50 am and sunset at 4:52 pm PST.

What is the month with the least sunshine in Coronado?

December has the least sunshine of the year, with an average of 6.7h of sunshine.

How long on average sun shines in December in Coronado?

The average sunshine duration in December is 6.7h.

What are the months with the lowest UV index in Coronado?

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

What is the UV index intensity in December in Coronado?

The average daily maximum UV index in December in Coronado, California, is 4. A UV Index of 3 to 5 symbolizes a moderate health threat from unprotected exposure to UV radiation.
Average high temperature
Average low temperature
Average pressure
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average sea temperature
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Coronado, CA

Average temperature in December - Coronado, CA
  • Average high temperature in December: 63°F

The warmest month (with the highest average high temperature) is August (75.6°F).
The months with the lowest average high temperature are February and December (63°F).

  • Average low temperature in December: 53.6°F

The month with the highest average low temperature is August (65.5°F).
The coldest month (with the lowest average low temperature) is February (53.1°F).

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Average pressure in December
Coronado, CA

Average pressure in December - Coronado, CA
  • Average pressure in December: 30.06"Hg

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

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Average wind speed in December
Coronado, CA

Average wind speed in December - Coronado, CA
  • Average wind speed in December: 5.8mph

The windiest month (with the highest average wind speed) is April (6.7mph).
The calmest month (with the lowest average wind speed) is October (5.5mph).

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Average humidity in December
Coronado, CA

Average humidity in December - Coronado, CA
  • Average humidity in December: 63%

The month with the highest relative humidity is June (76%).
The months with the lowest relative humidity are January and November (61%).

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Average rainfall in December
Coronado, CA

Average rainfall in December - Coronado, CA
  • Average rainfall in December: 1.81"

The wettest month (with the highest rainfall) is December (1.81").
The driest month (with the least rainfall) is June (0.08").

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Average rainfall days in December
Coronado, CA

Average rainfall days in December - Coronado, CA
  • Average rainfall days in December: 6.8 days

The month with the highest number of rainy days is March (8.4 days).
The month with the least rainy days is June (2.8 days).

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Average sea temperature in December
Coronado, CA

Average sea temperature in December - Coronado, CA
  • Average sea temperature in December: 60.4°F

The best month for swimming (with the highest average sea temperature) is August (67.9°F).
The coldest month (with the lowest average sea temperature) is February (58.7°F).

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Average daylight in December /
Average sunshine in December
Coronado, CA

Average daylight in December / Average sunshine in December - Coronado, 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 4min

The months with the most sunshine are July and August (Average sunshine: 11h and 54min).
The month with the least sunshine is December (Average sunshine: 6h and 42min).

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Average sunshine days in December
Coronado, CA

Average sunshine days in December - Coronado, CA
  • Average sunshine days in December: 21.8 days

The month with the most sunshine days is August (24.8 days).
The month with the least sunshine days is February (20.1 days).

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Average UV index in December
Coronado, CA

Average UV index in December - Coronado, 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).

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Average cloud cover in December
Coronado, CA

Average cloud cover in December - Coronado, CA
  • Average cloud cover in December: 24

The months with the most cloud cover are March, May and December (Cloud cover 24).
The month with the least cloud cover is August (Cloud cover 9).

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Average visibility in December
Coronado, CA

Average visibility in December - Coronado, 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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Coronado, California, USA

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