December weather forecastSan Nicolás, Chile

December

Weather in December

The first month of the summer, December, is also a moderately hot month in San Nicolás, Chile, with temperature in the range of an average high of 27.7°C (81.9°F) and an average low of 11.1°C (52°F).

Temperature

December showcases a minor temperature ascent, adjusting from November's warm 23.8°C (74.8°F) to a still moderately hot 27.7°C (81.9°F). San Nicolás's temperature exhibits a stark contrast from daytime to nighttime, averaging lows of 11.1°C (52°F) in December.

Heat index

The heat index value during December is estimated at 28°C (82.4°F). Staying active during long-term exposure might result in a state of exhaustion and cause heat cramps.
Consider that heat index readings are for situations in the shade and light wind. Exposure to unobstructed sunshine could lead to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', gauges the sensation of temperature factoring in the air's moisture content. An individual's perception of weather can be influenced by a variety of factors including metabolic differences, being pregnant, and their degree of physical exertion. One must note that being under the direct sun can escalate the heat's effects, with the heat index possibly rising by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Kids often lack the knowledge about the necessity to take breaks and consume liquids. Thirst, as a late symptom of dehydration, necessitates the maintenance of hydration, particularly during enduring physical activities.

Humidity

In San Nicolás, Chile, the average relative humidity in December is 54%.

Rainfall

In San Nicolás, Chile, during December, the rain falls for 2.2 days and regularly aggregates up to 11mm (0.43") of precipitation. In San Nicolás, Chile, during the entire year, the rain falls for 82.5 days and collects up to 614mm (24.17") of precipitation.

Daylight

The month with the longest days in San Nicolás is December, with an average of 14h and 36min of daylight.
On the first day of the month, sunrise is at 06:23 and sunset at 20:52. On the last day of December, in San Nicolás, sunrise is at 06:33 and sunset at 21:10 -03.

Sunshine

In December, the average sunshine in San Nicolás is 10.8h.

UV index

January, February and December, with an average maximum UV index of 6, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health risk from unsafe exposure to UV radiation for ordinary individuals.
Note: A maximum UV index of 6 in December translates into the following recommendations:
Continue precautions and advocate sun safety advice. Deterrence of sunburn is indispensable. Remember that UV radiation from the Sun is strongest between 10 a.m. and 4 p.m. Make an effort to limit direct sun exposure during this time. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.

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

Frequently asked questions

An average high-temperature, in December, in San Nicolás, is 27.7°C (81.9°F) and the average low-temperature is 11.1°C (52°F). The average heat index (a.k.a. 'real feel', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, in December is estimated at 28°C (82.4°F).

The average relative humidity in December in San Nicolás is 54%.

In San Nicolás, Chile, during December, the rain falls for 2.2 days and regularly aggregates up to 11mm (0.43") of precipitation.

With an average of 14h and 36min of daylight, December has the longest days of the year in San Nicolás, Chile.

The average day length in December is 14h and 37min.

In December, on the first day of the month, sunrise is at 06:23 and sunset at 20:52. On the last day of the month, in San Nicolás, sunrise is at 06:33 and sunset at 21:10 -03.

In December, the average sunshine duration in San Nicolás, Chile, is 10.8h.

The months with the highest UV index in San Nicolás are January, February and December, with an average maximum UV index of 6.

In December, the average daily maximum UV index in San Nicolás, Chile, is 6. A UV Index estimate of 6 to 7 represents a high health threat from unsafe exposure to Sun's UV rays.

Today

Tomorrow

Long-term

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

Nov

December

Jan

Average high temperature

23.8°C

27.7°C

30.8°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

11.4km/h

12.2km/h

12.5km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average daylight

Average sunshine

Average sunshine days

23.9

28.2

28.9

Average UV index

Average cloud cover

16%

11%

Average visibility

10km

Average temperature in December
San Nicolás, Chile

Average high temperature in December: 27.7°C

The warmest month (with the highest average high temperature) is January (30.8°C).
The month with the lowest average high temperature is July (12.3°C).

Average low temperature in December: 11.1°C

The month with the highest average low temperature is January (13.2°C).
The coldest month (with the lowest average low temperature) is July (4.3°C).

Average pressure in December
San Nicolás, Chile

Average pressure in December: 1014.8mbar

The month with the highest atmospheric pressure is July (1020.1mbar).
The month with the lowest atmospheric pressure is February (1013.8mbar).

Average wind speed in December
San Nicolás, Chile

Average wind speed in December: 10.8km/h

The windiest month (with the highest average wind speed) is January (11.1km/h).
The calmest month (with the lowest average wind speed) is May (8.3km/h).

Average humidity in December
San Nicolás, Chile

Average humidity in December: 54%

The months with the highest relative humidity are July and August (79%).
The month with the lowest relative humidity is January (49%).

Average rainfall in December
San Nicolás, Chile

Average rainfall in December: 11mm

The wettest month (with the highest rainfall) is June (151mm).
The driest month (with the least rainfall) is January (5mm).

Average rainfall days in December
San Nicolás, Chile

Average rainfall days in December: 2.2 days

The month with the highest number of rainy days is July (12.9 days).
The month with the least rainy days is January (1.8 days).

Average daylight in December /
Average sunshine in December
San Nicolás, Chile

Average daylight in December: 14h and 36min

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

Average sunshine in December: 10h and 48min

The month with the most sunshine is January (Average sunshine: 11h and 42min).
The month with the least sunshine is June (Average sunshine: 7h and 12min).

Average sunshine days in December
San Nicolás, Chile

Average sunshine days in December: 28.2 days

The month with the most sunshine days is January (28.9 days).
The month with the least sunshine days is August (16.8 days).

Average UV index in December
San Nicolás, Chile

Average UV index in December: 6

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

Average cloud cover in December
San Nicolás, Chile

Average cloud cover in December: 11

The month with the most cloud cover is June (Cloud cover 39).
The months with the least cloud cover are January and February (Cloud cover 7).

Average visibility in December
San Nicolás, Chile

Average visibility in December: 10km

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