December weather forecast
Dana Point, CA

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Weather in December

December, the first month of the winter in Dana Point, is still a refreshing month, with an average temperature fluctuating between 51.6°F (10.9°C) and 61.9°F (16.6°C).

Temperature

With average temperatures fluctuating between a high of 61.9°F (16.6°C) and a low of 51.6°F (10.9°C), December stands out as the coldest month.

Humidity

In December, the average relative humidity is 63%.

Rainfall

December is the month with the most rainfall in Dana Point. Rain falls for 6.8 days and accumulates 1.93" (49mm) of precipitation.

Ocean temperature

In Dana Point, California, the average seawater temperature in December is 60.4°F (15.8°C).
Note: Swimming in water at 60.4°F (15.8°C) is not a pleasurable experience for most. The task of managing breathing becomes more challenging as the water temperature descends 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 in Dana Point.
On the first day of the month, sunrise is at 6:37 am and sunset at 4:42 pm. On the last day of December, in Dana Point, California, sunrise is at 6:54 am and sunset at 4:53 pm PST.

Sunshine

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

UV index

The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for the ordinary person.
Note: A daily maximum UV index of 4 in December translates into the following instructions:
Proceed with care. Light skin individuals may be exposed to burns in fewer than 30 minutes. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.
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Frequently asked questions

What month is the coldest in Dana Point?

In Dana Point, December registers the lowest temperatures, averaging 61.9°F (16.6°C) at the peak and 51.6°F (10.9°C) at the lowest.

What are December temperatures in Dana Point?

December temperatures in Dana Point, California, vary between a high-temperature of 61.9°F (16.6°C) and a low-temperature of 51.6°F (10.9°C).

What is the average humidity in December in Dana Point?

In Dana Point, the average relative humidity in December is 63%.

What is the wettest month in Dana Point?

December is the month with the most rainfall. Rain falls for 6.8 days and accumulates 1.93" (49mm) of precipitation.

How many days does it rain in December in Dana Point?

In Dana Point, California, in December, it is raining for 6.8 days, with typically 1.93" (49mm) of accumulated precipitation.

How cold is the water in December in Dana Point?

In Dana Point, California, the average seawater temperature in December is 60.4°F (15.8°C). For swimming, a surface water temperature of 60.4°F (15.8°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 in Dana Point?

December has the shortest days of the year in Dana Point, California, with an average of 10h and 0min of daylight.

How many hours of daylight does Dana Point have in December?

The average day length in December is 9h and 59min.

What time are sunrise and sunset in December in Dana Point?

In December, on the first day of the month, sunrise is at 6:37 am and sunset at 4:42 pm. On the last day of the month, in Dana Point, California, sunrise is at 6:54 am and sunset at 4:53 pm PST.

What is the month with the least sunshine in Dana Point?

The month with the least sunshine in Dana Point is December, with an average of 6.4h of sunshine.

How many hours of sunshine does Dana Point have in December?

In December, the average sunshine duration in Dana Point, California, is 6.4h.

What is the month with the lowest UV index in Dana Point?

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

What is the UV index reading in December in Dana Point?

In Dana Point, the average daily maximum UV index in December is 4. A UV Index of 3 to 5 symbolizes a medium health risk from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Dana Point, CA

Average temperature in December - Dana Point, CA
  • Average high temperature in December: 61.9°F

The warmest month (with the highest average high temperature) is September (75.7°F).
The month with the lowest average high temperature is December (61.9°F).

  • Average low temperature in December: 51.6°F

The month with the highest average low temperature is September (63.5°F).
The coldest month (with the lowest average low temperature) is February (51.1°F).

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Average pressure in December
Dana Point, CA

Average pressure in December - Dana Point, CA
  • Average pressure in December: 30.07"Hg

The month with the highest atmospheric pressure is January (30.09"Hg).
The months with the lowest atmospheric pressure are June and September (29.89"Hg).

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Average wind speed in December
Dana Point, CA

Average wind speed in December - Dana Point, CA
  • Average wind speed in December: 5.7mph

The windiest month (with the highest average wind speed) is April (6.4mph).
The calmest month (with the lowest average wind speed) is October (5.1mph).

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Average humidity in December
Dana Point, CA

Average humidity in December - Dana Point, CA
  • Average humidity in December: 63%

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

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Average rainfall in December
Dana Point, CA

Average rainfall in December - Dana Point, CA
  • Average rainfall in December: 1.93"

The wettest month (with the highest rainfall) is December (1.93").
The driest month (with the least rainfall) is June (0.12").

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Average rainfall days in December
Dana Point, CA

Average rainfall days in December - Dana Point, CA
  • Average rainfall days in December: 6.8 days

The month with the highest number of rainy days is March (8.1 days).
The month with the least rainy days is June (3.6 days).

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Average sea temperature in December
Dana Point, CA

Average sea temperature in December - Dana Point, CA
  • Average sea temperature in December: 60.3°F

The best month for swimming (with the highest average sea temperature) is August (68.3°F).
The coldest months (with the lowest average sea temperature) are January and February (58.9°F).

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Average daylight in December /
Average sunshine in December
Dana Point, CA

Average daylight in December / Average sunshine in December - Dana Point, 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 48min).
The month with the least sunshine is December (Average sunshine: 6h and 24min).

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Average sunshine days in December
Dana Point, CA

Average sunshine days in December - Dana Point, CA
  • Average sunshine days in December: 22.9 days

The month with the most sunshine days is January (24.1 days).
The month with the least sunshine days is February (20.3 days).

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Average UV index in December
Dana Point, CA

Average UV index in December - Dana Point, 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
Dana Point, CA

Average cloud cover in December - Dana Point, CA
  • Average cloud cover in December: 26

The months with the most cloud cover are March and May (Cloud cover 27).
The month with the least cloud cover is August (Cloud cover 12).

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Average visibility in December
Dana Point, CA

Average visibility in December - Dana Point, 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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Dana Point, California, USA

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