December weather forecast
Aptos, CA

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Weather in December

December, the first month of the winter in Aptos, is still a refreshing month, with an average temperature ranging between max 57.2°F (14°C) and min 46.2°F (7.9°C).

Temperature

In Aptos, the lowest average temperatures are observed in December, with a high of 57.2°F (14°C) and a low of 46.2°F (7.9°C).

Humidity

In December, the average relative humidity is 71%.

Rainfall

December is the month with the most rainfall. Rain falls for 10.3 days and accumulates 2.8" (71mm) of precipitation.

Daylight

December has the shortest days of the year, with an average of 9h and 42min of daylight.
On the first day of the month, sunrise is at 7:02 am and sunset at 4:51 pm. On the last day of December, sunrise is at 7:20 am and sunset at 5:01 pm PST.

Sunshine

December has the least sunshine of the year in Aptos, with an average of 5.8h of sunshine.

UV index

In December, the average daily maximum UV index in Aptos is 4. A UV Index reading of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for ordinary individuals.
Note: During December, 4 as the daily maximum UV index converts into the following advice:
Prioritize safety - The need to safeguard skin and eyes from harm is emphasized. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.
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Frequently asked questions

What time of the year is the coldest in Aptos?

December, noted for its average high-temperature of 57.2°F (14°C) and an average low-temperature of 46.2°F (7.9°C), is considered the coldest month.

What is the usual temperature for Aptos in December?

The average high-temperature, in December, in Aptos, is 57.2°F (14°C), while the average low-temperature is 46.2°F (7.9°C).

What is the average humidity in December in Aptos?

In Aptos, the average relative humidity in December is 71%.

What is the rainiest month in Aptos?

The month with the most rainfall in Aptos is December, when the rain falls for 10.3 days and typically aggregates up to 2.8" (71mm) of precipitation.

How much does it rain in Aptos in December?

In Aptos, during December, the rain falls for 10.3 days and regularly aggregates up to 2.8" (71mm) of precipitation.

What is the month with the shortest days in Aptos?

With an average of 9h and 42min of daylight, December has the shortest days of the year in Aptos, California.

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

The average day length in December in Aptos, California, is 9h and 40min.

What time are sunrise and sunset in December in Aptos?

On the first day of December in Aptos, sunrise is at 7:02 am and sunset at 4:51 pm. On the last day of the month, sunrise is at 7:20 am and sunset at 5:01 pm PST.

What is the month with the least sunshine in Aptos?

The month with the least sunshine in Aptos, California, is December, with an average of 5.8h of sunshine.

How many hours of sunshine does Aptos have in December?

In December, the average sunshine duration in Aptos is 5.8h.

What is the UV index intensity in December in Aptos?

In Aptos, the average daily maximum UV index in December is 4. A UV Index reading of 3 to 5 represents 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
Aptos, CA

Average temperature in December - Aptos, CA
  • Average high temperature in December: 57.2°F

The warmest months (with the highest average high temperature) are August and September (73°F).
The month with the lowest average high temperature is December (57.2°F).

  • Average low temperature in December: 46.2°F

The month with the highest average low temperature is September (55.2°F).
The coldest month (with the lowest average low temperature) is February (45.5°F).

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Average pressure in December
Aptos, CA

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

The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is September (29.92"Hg).

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Average wind speed in December
Aptos, CA

Average wind speed in December - Aptos, CA
  • Average wind speed in December: 6.2mph

The windiest month (with the highest average wind speed) is April (7.4mph).
The calmest months (with the lowest average wind speed) are July and August (5.5mph).

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Average humidity in December
Aptos, CA

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

The month with the highest relative humidity is March (75%).
The month with the lowest relative humidity is October (68%).

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Average rainfall in December
Aptos, CA

Average rainfall in December - Aptos, CA
  • Average rainfall in December: 2.8"

The wettest month (with the highest rainfall) is December (2.8").
The driest months (with the least rainfall) are July and August (0.04").

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Average rainfall days in December
Aptos, CA

Average rainfall days in December - Aptos, CA
  • Average rainfall days in December: 10.3 days

The month with the highest number of rainy days is March (13.4 days).
The month with the least rainy days is August (1.2 days).

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

Average daylight in December / Average sunshine in December - Aptos, 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 42min).

  • Average sunshine in December: 5h and 5min

The month with the most sunshine is July (Average sunshine: 11h and 42min).
The month with the least sunshine is December (Average sunshine: 5h and 48min).

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Average sunshine days in December
Aptos, CA

Average sunshine days in December - Aptos, CA
  • Average sunshine days in December: 19.5 days

The month with the most sunshine days is August (27.8 days).
The month with the least sunshine days is March (16.4 days).

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Average UV index in December
Aptos, CA

Average UV index in December - Aptos, CA
  • Average UV index in December: 4

The months with the highest UV index are June, July, August and September (UV index 5).
The months with the lowest UV index are February and November (UV index 3).

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Average cloud cover in December
Aptos, CA

Average cloud cover in December - Aptos, CA
  • Average cloud cover in December: 35

The month with the most cloud cover is March (Cloud cover 38).
The months with the least cloud cover are July and September (Cloud cover 15).

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Average visibility in December
Aptos, CA

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

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