December weather forecast
La Palma, CA

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Weather in December

December, the first month of the winter in La Palma, is still a comfortable month, with an average temperature ranging between min 51.4°F (10.8°C) and max 64°F (17.8°C).

Temperature

La Palma experiences its lowest average temperatures in December, reaching a peak of 64°F (17.8°C) and a minimum of 51.4°F (10.8°C).

Humidity

The average relative humidity in December in La Palma is 56%.

Rainfall

The month with the most rainfall is December, when the rain falls for 4.9 days and typically aggregates up to 0.55" (14mm) of precipitation.

Daylight

December has the shortest days of the year, with an average of 9h and 54min of daylight.
On the first day of December, sunrise is at 6:39 am and sunset at 4:43 pm. On the last day of the month, sunrise is at 6:57 am and sunset at 4:54 pm PST.

Sunshine

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

UV index

February, November and December, with an average maximum UV index of 4, are months with the lowest UV index. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for the ordinary person.
Note: A maximum daily UV index of 4 during December morphs into the following directions:
Undertake precautions - Obligation exists to protect against skin and eye damage. To guard against the harmful effects of the Sun, minimize exposure during midday. Always opt for UVA and UVB-resistant sunglasses on radiant days.
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Frequently asked questions

What are the coldest months in La Palma?

December brings the lowest temperatures in La Palma, with an average high of 64°F (17.8°C) and an average low of 51.4°F (10.8°C).

What are December temperatures in La Palma?

December temperatures in La Palma, California, vary between a high-temperature of 64°F (17.8°C) and a low-temperature of 51.4°F (10.8°C). In September, the average heat index (a.k.a. 'feels like', 'real feel'), which combines air temperature and relative humidity, is calculated to be 84.2°F (29°C).

What is the average humidity in December in La Palma?

In December, the average relative humidity in La Palma, California, is 56%.

What is the rainiest month in La Palma?

The month with the most rainfall is December, when the rain falls for 4.9 days and typically aggregates up to 0.55" (14mm) of precipitation.

How many days does it rain in December in La Palma?

In La Palma, California, in December, during 4.9 rainfall days, 0.55" (14mm) of precipitation is typically accumulated.

What is the month with the shortest days in La Palma?

With an average of 9h and 54min of daylight, December has the shortest days of the year.

What is the average length of the day in December in La Palma?

The average day length in December in La Palma is 9h and 57min.

When are sunrise and sunset in December in La Palma?

In December, on the first day of the month, sunrise is at 6:39 am and sunset at 4:43 pm. On the last day of the month, in La Palma, California, sunrise is at 6:57 am and sunset at 4:54 pm PST.

What is the month with the least sunshine in La Palma?

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

How long on average sun shines in December in La Palma?

In December, the average sunshine duration in La Palma, California, is 6.7h.

What are the months with the lowest UV index in La Palma?

February, November and December, with an average maximum UV index of 4, are months with the lowest UV index in La Palma, California.

How high is the UV index in December in La Palma?

The average daily maximum UV index in December in La Palma is 4. A UV Index estimate of 3 to 5 represents a medium hazard to health 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
La Palma, CA

Average temperature in December - La Palma, CA
  • Average high temperature in December: 64°F

The warmest month (with the highest average high temperature) is August (82°F).
The month with the lowest average high temperature is December (64°F).

  • Average low temperature in December: 51.4°F

The month with the highest average low temperature is August (65.7°F).
The coldest month (with the lowest average low temperature) is February (51.3°F).

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Average pressure in December
La Palma, CA

Average pressure in December - La Palma, CA
  • Average pressure in December: 30.07"Hg

The month with the highest atmospheric pressure is January (30.1"Hg).
The months with the lowest atmospheric pressure are June and September (29.89"Hg).

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Average wind speed in December
La Palma, CA

Average wind speed in December - La Palma, CA
  • Average wind speed in December: 5.3mph

The windiest month (with the highest average wind speed) is April (6.2mph).
The calmest months (with the lowest average wind speed) are September and October (4.8mph).

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Average humidity in December
La Palma, CA

Average humidity in December - La Palma, CA
  • Average humidity in December: 56%

The month with the highest relative humidity is June (67%).
The month with the lowest relative humidity is November (52%).

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Average rainfall in December
La Palma, CA

Average rainfall in December - La Palma, CA
  • Average rainfall in December: 0.55"

The wettest month (with the highest rainfall) is December (0.55").
The driest month (with the least rainfall) is June (0").

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Average rainfall days in December
La Palma, CA

Average rainfall days in December - La Palma, CA
  • Average rainfall days in December: 4.9 days

The month with the highest number of rainy days is March (5.6 days).
The month with the least rainy days is June (0.6 days).

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Average daylight in December /
Average sunshine in December
La Palma, CA

Average daylight in December / Average sunshine in December - La Palma, CA
  • Average daylight in December: 9h and 5min

The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).

  • 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 42min).

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Average sunshine days in December
La Palma, CA

Average sunshine days in December - La Palma, CA
  • Average sunshine days in December: 24.6 days

The month with the most sunshine days is June (28.6 days).
The month with the least sunshine days is February (22.9 days).

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Average UV index in December
La Palma, CA

Average UV index in December - La Palma, 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 February, November and December (UV index 4).

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Average cloud cover in December
La Palma, CA

Average cloud cover in December - La Palma, CA
  • Average cloud cover in December: 22

The months with the most cloud cover are March and December (Cloud cover 22).
The month with the least cloud cover is August (Cloud cover 6).

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Average visibility in December
La Palma, CA

Average visibility in December - La Palma, 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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La Palma, California, USA

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