Mendoza
Argentina
Long-term weather forecast
Long-term weather forecast

December weather forecast and climate
Mendoza, Argentina

The first month of the summer, December, is a tropical month in Mendoza, Argentina, with temperature in the range of an average high of 31.5°C (88.7°F) and an average low of 17.2°C (63°F).

Temperature

In Mendoza, the average high-temperature is relatively the same as in November - a tropical 31.5°C (88.7°F). In Mendoza, the average low-temperature is 17.2°C (63°F).

Heat index

In December, the average heat index is calculated to a hot 32.8°C (91°F). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like', 'real feel', 'apparent temperature', or 'felt air temperature', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. Additional factors like activity, metabolic differences, wind, and clothing affect individual temperature impact. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.

Humidity

The average relative humidity in December is 47%.

Rainfall

In Mendoza, during 4 rainfall days, 24.4mm (1") of precipitation is typically accumulated. Throughout the year, in Mendoza, Argentina, there are 39 rainfall days, and 189.7mm (7.5") of precipitation is accumulated.

Daylight

December has the longest days of the year in Mendoza, Argentina, with an average of 14.3h of daylight.

Sunshine

In Mendoza, the average sunshine is 9.2h.

UV index

January, February and December, with an average maximum UV index of 12, are months with the highest UV index. A UV Index reading of 11, and higher, represents an extreme threat to health from unsafe exposure to the UV radiation for the ordinary person.
Note: The average daily UV index of 12 transform into the following instructions:
Take all required precautions, as unprotected skin and eyes can burn in minutes. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Even on cloudy days, a sunscreen with a minimum 30 sun protection factor should be generously applied and frequently re-applied, including after every swim or outdoor exercise.

What is the temperature in December in Mendoza?

The average high-temperature, in December, in Mendoza, Argentina, is 31.5°C (88.7°F), while the average low-temperature is 17.2°C (63°F). In December, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), that factores the actual air temperature with the relative humidity, is appraised at 32.8°C (91°F).

What is the average humidity in December in Mendoza?

In Mendoza, Argentina, the average relative humidity in December is 47%.

How much does it rain in Mendoza in December?

In Mendoza, Argentina, in December, it is raining for 4 days, with typically 24.4mm (1") of accumulated precipitation.

When are the longest days in Mendoza?

December has the longest days of the year in Mendoza, Argentina, with an average of 14.3h of daylight.

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

The average length of the day in December in Mendoza, Argentina, is 14.3h.

How many hours of sunshine does Mendoza have in December?

In Mendoza, the average sunshine in December is 9.2h.

What is the month with the highest UV index in Mendoza?

Months with the highest UV index in Mendoza, Argentina, are January, February and December, with an average maximum UV index of 12.

How high is the UV index in December in Mendoza?

The average daily maximum UV index in December in Mendoza is 12. A UV Index reading of 11, and higher, represents an extreme health threat from unsafe exposure to the Sun's UV rays.
Average temperature in December - Mendoza, Argentina
  • Average high temperature in December: 31.5°C

The warmest month (with the highest average high temperature) is January (32.2°C).
The month with the lowest average high temperature is July (15.3°C).

  • Average low temperature in December: 17.2°C

The month with the highest average low temperature is January (18.1°C).
The coldest month (with the lowest average low temperature) is July (1.7°C).

Average humidity in December - Mendoza, Argentina
  • Average humidity in December: 47%

Months with the highest relative humidity are April and May (67%).
The month with the lowest relative humidity is November (45%).

Average rainfall in December - Mendoza, Argentina
  • Average rainfall in December: 24.4mm

The wettest month (with the highest rainfall) is January (36.4mm).
The driest month (with the lowest rainfall) is August (3.3mm).

Average rainfall days in December - Mendoza, Argentina
  • Average rainfall days in December: 4 days

Months with the highest number of rainy days are January, February and March (5 days).
Months with the lowest number of rainy days are May, June, July and August (2 days).

Average daylight in December / Average sunshine in December - Mendoza, Argentina
  • Average daylight in December: 14.3h

The month with the longest days is December (Average daylight: 14.3h).
The month with shortest days is June (Average daylight: 10h).

  • Average sunshine in December: 9.2h

The month with most sunshine is November (Average sunshine: 9.8h).
The month with least sunshine is June (Average sunshine: 5.6h).

Average UV index in December - Mendoza, Argentina
  • Average UV index in December: 12

Months with the highest UV index are January, February and December (UV index 12).
Months with the lowest UV index are June and July (UV index 3).