December weather forecast
Arauco, Chile

December

Weather in December

The first month of the summer, December, is a pleasant month in Arauco, Chile, with an average temperature fluctuating between 11.3°C (52.3°F) and 21.5°C (70.7°F).

Temperature

The onset of December manifests an average high-temperature of an agreeable 21.5°C (70.7°F), demonstrating a minor variation from the preceding month. An average low-temperature of 11.3°C (52.3°F) is anticipated throughout the nights in Arauco during December.

Humidity

The average relative humidity in December is 70%.

Rainfall

In Arauco, in December, it is raining for 3.4 days, with typically 7mm (0.28") of accumulated precipitation. In Arauco, during the entire year, the rain falls for 96.1 days and collects up to 601mm (23.66") of precipitation.

Sea temperature

In Arauco, the average seawater temperature in December is 14.3°C (57.7°F).
Note: Diving into 14.3°C (57.7°F) is practical below 10°C (50°F), given you're wearing protective swim gear; without it, expect a quick onset of cold shock and a struggle to breathe. Merely touching waters at 13°C (55.4°F) feels ice-cold.

Daylight

December has the longest days of the year in Arauco, with an average of 14h and 42min of daylight.
On the first day of December, sunrise is at 06:26 and sunset at 20:58. On the last day of the month, sunrise is at 06:36 and sunset at 21:16 -03.

Sunshine

In Arauco, the average sunshine in December is 11.2h.

UV index

January through March, November and December, with an average maximum UV index of 5, are months with the highest UV index. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for the average person.
Note: A maximum UV index of 5 in December translates into the following recommendations:
Put precautions into practice - Protective measures against sun-induced damage are advised. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.

Frequently asked questions

What are December temperatures in Arauco?
The high-temperature, in December, in Arauco, is 21.5°C (70.7°F), while the low-temperature averages to 11.3°C (52.3°F).
What is the average humidity in December in Arauco?
The average relative humidity in December in Arauco is 70%.
How much does it rain in Arauco in December?
In Arauco, during December, the rain falls for 3.4 days and regularly aggregates up to 7mm (0.28") of precipitation.
How cold is the water in December in Arauco?
In December, the average sea temperature in Arauco, Chile, is 14.3°C (57.7°F). Swimming in 14.3°C (57.7°F) is considered life-threatening. Even a few minutes in 13°C (55.4°F) water is uncomfortable, and swimming below 10°C (50°F) may cause total loss of breathing control and cold shock, depending on a person's physique.
When are the longest days in Arauco?
The month with the longest days is December, with an average of 14h and 42min of daylight.
How many hours of daylight does Arauco have in December?
In Arauco, the average day length in December is 14h and 41min.
What time are sunrise and sunset in December in Arauco?
In December, on the first day of the month, sunrise is at 06:26 and sunset at 20:58. On the last day of the month, sunrise is at 06:36 and sunset at 21:16 -03.
How long on average sun shines in December in Arauco?
In December, the average sunshine duration in Arauco is 11.2h.
What is the month with the highest UV index in Arauco?
January through March, November and December, with an average maximum UV index of 5, are months with the highest UV index.
How high is the UV index in December in Arauco?
The average daily maximum UV index in December is 5. A UV Index value of 3 to 5 symbolizes a moderate vulnerability from unsafe exposure to Sun's UV rays.
Average high temperature
Average low temperature
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
Arauco, Chile
  • Average high temperature in December: 21.5°C

The warmest month (with the highest average high temperature) is January (24.1°C).
The month with the lowest average high temperature is July (12.1°C).

  • Average low temperature in December: 11.3°C

The month with the highest average low temperature is January (12.7°C).
The coldest month (with the lowest average low temperature) is July (6.5°C).

Average pressure in December
Arauco, Chile
  • Average pressure in December: 1015.8mbar

The month with the highest atmospheric pressure is September (1020mbar).
The month with the lowest atmospheric pressure is February (1014.4mbar).

Average wind speed in December
Arauco, Chile
  • Average wind speed in December: 13.9km/h

The windiest month (with the highest average wind speed) is January (14.3km/h).
The calmest month (with the lowest average wind speed) is May (10.6km/h).

Average humidity in December
Arauco, Chile
  • Average humidity in December: 70%

The months with the highest relative humidity are June and July (83%).
The month with the lowest relative humidity is January (66%).

Average rainfall in December
Arauco, Chile
  • Average rainfall in December: 7mm

The wettest month (with the highest rainfall) is June (161mm).
The driest month (with the least rainfall) is January (3mm).

Average rainfall days in December
Arauco, Chile
  • Average rainfall days in December: 3.4 days

The month with the highest number of rainy days is July (16.4 days).
The month with the least rainy days is January (1.8 days).

Average sea temperature in December
Arauco, Chile
  • Average sea temperature in December: 14.3°C

The best months for swimming (with the highest average sea temperature) are January and March (15.3°C).
The coldest month (with the lowest average sea temperature) is August (11.8°C).

Average daylight in December /
Average sunshine in December
Arauco, Chile
  • Average daylight in December: 14h and 4min

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

  • Average sunshine in December: 11h and 1min

The month with the most sunshine is January (Average sunshine: 11h and 42min).
The month with the least sunshine is June (Average sunshine: 5h and 18min).

Average sunshine days in December
Arauco, Chile
  • Average sunshine days in December: 26.7 days

The month with the most sunshine days is January (28.6 days).
The month with the least sunshine days is July (13.5 days).

Average UV index in December
Arauco, Chile
  • Average UV index in December: 5

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

Average cloud cover in December
Arauco, Chile
  • Average cloud cover in December: 16

The month with the most cloud cover is June (Cloud cover 46).
The month with the least cloud cover is January (Cloud cover 11).

Average visibility in December
Arauco, Chile
  • Average visibility in December: 10km

The months with the highest visibility are January, February, March and December (10km).
The months with the lowest visibility are April, May, June, July, August, September, October and November (9km).

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