December weather forecast
Dublin, CA

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Weather in December

The first month of the winter, December, is also a fresh month in Dublin, California, with an average temperature varying between 41.7°F (5.4°C) and 55°F (12.8°C).

Temperature

Dublin's December weather, marked by an average high temperature of 55°F (12.8°C) and an average low temperature of 41.7°F (5.4°C), is the coldest in the year.

Humidity

In December, the average relative humidity is 71%.

Rainfall

In Dublin, in December, it is raining for 10.4 days, with typically 1.81" (46mm) of accumulated precipitation. Throughout the year, in Dublin, there are 70.2 rainfall days, and 10.98" (279mm) of precipitation is accumulated.

Daylight

The month with the shortest days is December, with an average of 9h and 36min of daylight.
On the first day of December, sunrise is at 7:04 am and sunset at 4:49 pm. On the last day of the month, sunrise is at 7:22 am and sunset at 4:59 pm PST.

Sunshine

The month with the least sunshine is December, with an average of 6h of sunshine.

UV index

The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 3. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for the ordinary person.
Note: The maximum daily UV index of 3 in December interprets into the following recommendations:
Be cautious. Those with fair skin can be subjected to burns in fewer than 30 minutes. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.
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Frequently asked questions

What is the coldest time of year in Dublin?

Temperature records in Dublin mark December as the coldest month, with highs averaging 55°F (12.8°C) and lows at 41.7°F (5.4°C).

What is the temperature in December in Dublin?

The average high-temperature and low-temperature during December are 55°F (12.8°C) and 41.7°F (5.4°C) respectively. In September, the average heat index (a.k.a. 'feels like', 'real feel'), which combines relative humidity and air temperature, is evaluated at 84.2°F (29°C).

What is the average humidity in December in Dublin?

The average relative humidity in December is 71%.

How many days does it rain in December in Dublin?

In Dublin, California, in December, it is raining for 10.4 days, with typically 1.81" (46mm) of accumulated precipitation.

What is the month with the shortest days in Dublin?

December has the shortest days of the year in Dublin, with an average of 9h and 36min of daylight.

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

In Dublin, the average day length in December is 9h and 37min.

When are sunrise and sunset in December in Dublin?

In December, on the first day of the month, sunrise is at 7:04 am and sunset at 4:49 pm. On the last day of the month, sunrise is at 7:22 am and sunset at 4:59 pm PST.

What is the month with the least sunshine in Dublin?

December has the least sunshine of the year in Dublin, California, with an average of 6h of sunshine.

How many hours of sunshine does Dublin have in December?

In December, the average sunshine duration in Dublin is 6h.

When is the lowest UV index in Dublin?

The months with the lowest UV index in Dublin are January, February, November and December, with an average maximum UV index of 3.

How high is the UV index in December in Dublin?

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

Average temperature in December - Dublin, CA
  • Average high temperature in December: 55°F

The warmest month (with the highest average high temperature) is July (85.3°F).
The month with the lowest average high temperature is December (55°F).

  • Average low temperature in December: 41.7°F

The month with the highest average low temperature is August (56.7°F).
The coldest month (with the lowest average low temperature) is January (41.5°F).

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Average pressure in December
Dublin, CA

Average pressure in December - Dublin, CA
  • Average pressure in December: 30.11"Hg

The month with the highest atmospheric pressure is January (30.14"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.92"Hg).

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Average wind speed in December
Dublin, CA

Average wind speed in December - Dublin, CA
  • Average wind speed in December: 4.7mph

The windiest month (with the highest average wind speed) is May (6.3mph).
The calmest month (with the lowest average wind speed) is November (4.2mph).

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Average humidity in December
Dublin, CA

Average humidity in December - Dublin, CA
  • Average humidity in December: 71%

The month with the highest relative humidity is March (74%).
The months with the lowest relative humidity are July and September (56%).

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Average rainfall in December
Dublin, CA

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

The wettest month (with the highest rainfall) is February (2.05").
The driest months (with the least rainfall) are July and August (0.04").

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Average rainfall days in December
Dublin, CA

Average rainfall days in December - Dublin, CA
  • Average rainfall days in December: 10.4 days

The month with the highest number of rainy days is March (12.4 days).
The month with the least rainy days is August (0.9 days).

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

Average daylight in December / Average sunshine in December - Dublin, CA
  • Average daylight in December: 9h and 4min

The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).

  • Average sunshine in December: 6h and 0min

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

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Average sunshine days in December
Dublin, CA

Average sunshine days in December - Dublin, CA
  • Average sunshine days in December: 19.6 days

The month with the most sunshine days is August (29 days).
The month with the least sunshine days is March (17.6 days).

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Average UV index in December
Dublin, CA

Average UV index in December - Dublin, CA
  • Average UV index in December: 3

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 3).

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Average cloud cover in December
Dublin, CA

Average cloud cover in December - Dublin, CA
  • Average cloud cover in December: 34

The month with the most cloud cover is March (Cloud cover 35).
The month with the least cloud cover is July (Cloud cover 5).

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Average visibility in December
Dublin, CA

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

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