December weather forecastRancagua, Chile

December

Weather in December

Finally, December concludes Rancagua's weather cycle by dialling up the temperature to an exhilarating average high of 24.9°C (76.8°F), signaling the onset of summer. This month is a haven for sun-lovers, blessed with an impressive 14.4 hours of daylight, making for prolonged evenings. Remarkably, it replicates November's rainfall pattern, sticking to a mere 10mm (0.39") over 2.2 days. A low cloud cover percentage and decreasing humidity provide a clear and crisp atmosphere. With the increased warmth and lower rainfall, December emerges as an ideal month to bask in the Chilean sun amidst Rancagua’s diverse landscapes.

Temperature

The weather during December records an average high-temperature of a moderately hot 24.9°C (76.8°F), closely mirroring the preceding month. Rancagua experiences a substantial decline from the daytime high temperatures in December, settling on an average low of 9.8°C (49.6°F).

Humidity

In Rancagua, the average relative humidity in December is 46%.

Rainfall

In Rancagua, Chile, during December, the rain falls for 2.2 days and regularly aggregates up to 10mm (0.39") of precipitation. Throughout the year, there are 64.2 rainfall days, and 389mm (15.31") of precipitation is accumulated.

Snowfall

January through June, August through December are months without snowfall in Rancagua, Chile.

Daylight

The month with the longest days in Rancagua is December, with an average of 14h and 24min of daylight.
On the first day of the month, sunrise is at 06:24 and sunset at 20:40. On the last day of December, sunrise is at 06:34 and sunset at 20:58 -03.

Sunshine

In Rancagua, the average sunshine in December is 9.7h.

UV index

In December, the average daily maximum UV index in Rancagua is 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for the average person.
Note: A maximum high UV index of 5 in December translates into the following recommendations:
Exercise prudence. Persons with fair skin could be burned in under 30 minutes. The solar radiation around mid-day is intense; avoid the Sun and stay safe. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear.

Updated: Jan 24, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

In Rancagua, 24.9°C (76.8°F) is the average high-temperature and 9.8°C (49.6°F) is the average low-temperature during December. The average heat index (a.k.a. 'real feel', 'apparent temperature'), which represents the influence of relative humidity on air temperature, in January is appraised at 27°C (80.6°F).

In December, the average relative humidity in Rancagua, Chile, is 46%.

In Rancagua, in December, during 2.2 rainfall days, 10mm (0.39") of precipitation is typically accumulated.

January through June, August through December are months without snowfall in Rancagua.

With an average of 14h and 24min of daylight, December has the longest days of the year in Rancagua, Chile.

In Rancagua, Chile, the average day length in December is 14h and 23min.

In December, on the first day of the month, sunrise is at 06:24 and sunset at 20:40. On the last day of the month, sunrise is at 06:34 and sunset at 20:58 -03.

In December, the average sunshine duration is 9.7h.

The average daily maximum UV index in December in Rancagua, Chile, is 5. A UV Index value of 3 to 5 symbolizes a medium health risk from exposure to the Sun's UV radiation.

Today

Tomorrow

Long-term

Year J F M A M J J A S O N December

Nov

December

Jan

Average high temperature

22.3°C

24.9°C

27.1°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

8.3km/h

8.6km/h

8.8km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

Average daylight

Average sunshine

Average sunshine days

23.9

27.4

26.8

Average UV index

Average cloud cover

12%

Average visibility

10km

Average temperature in December
Rancagua, Chile

Average high temperature in December: 24.9°C

The warmest month (with the highest average high temperature) is January (27.1°C).
The month with the lowest average high temperature is July (10.6°C).

Average low temperature in December: 9.8°C

The month with the highest average low temperature is January (11.8°C).
The coldest month (with the lowest average low temperature) is July (1.7°C).

Average pressure in December
Rancagua, Chile

Average pressure in December: 1014.8mbar

The month with the highest atmospheric pressure is July (1019.8mbar).
The month with the lowest atmospheric pressure is February (1014.3mbar).

Average wind speed in December
Rancagua, Chile

Average wind speed in December: 7.2km/h

The windiest month (with the highest average wind speed) is June (7.9km/h).
The calmest month (with the lowest average wind speed) is April (6.2km/h).

Average humidity in December
Rancagua, Chile

Average humidity in December: 46%

The months with the highest relative humidity are July and August (64%).
The month with the lowest relative humidity is March (40%).

Average rainfall in December
Rancagua, Chile

Average rainfall in December: 10mm

The wettest month (with the highest rainfall) is June (105mm).
The driest month (with the least rainfall) is March (2mm).

Average rainfall days in December
Rancagua, Chile

Average rainfall days in December: 2.2 days

The month with the highest number of rainy days is June (9.1 days).
The months with the least rainy days are January and February (1.8 days).

Average snowfall in December
Rancagua, Chile

Average snowfall in December: 0mm

The month with the highest snowfall is July (4mm).
The months with the least snowfall are January, February, March, April, May, June, August, September, October, November and December (0mm).

Average snowfall days in December
Rancagua, Chile

Average snowfall days in December: 0 days

The month with the highest number of snowfall days is July (0.3 days).
The months with the least snowfall days are January, February, March, April, May, June, August, September, October, November and December (0 days).

Average daylight in December /
Average sunshine in December
Rancagua, Chile

Average daylight in December: 14h and 24min

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

Average sunshine in December: 9h and 42min

The months with the most sunshine are January and February (Average sunshine: 9h and 54min).
The month with the least sunshine is June (Average sunshine: 7h and 42min).

Average sunshine days in December
Rancagua, Chile

Average sunshine days in December: 27.4 days

The month with the most sunshine days is March (28.8 days).
The month with the least sunshine days is June (20.2 days).

Average UV index in December
Rancagua, Chile

Average UV index in December: 5

The month with the highest UV index is January (UV index 6).
The months with the lowest UV index are June and July (UV index 2).

Average cloud cover in December
Rancagua, Chile

Average cloud cover in December: 8

The month with the most cloud cover is June (Cloud cover 32).
The month with the least cloud cover is February (Cloud cover 4).

Average visibility in December
Rancagua, Chile

Average visibility in December: 10km

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