December weather forecast
Mendoza, Argentina

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Weather in December

December arrives in Mendoza with a noticeable spike in temperature. The month ushers in the hot summer climate, characterized by humid conditions coupled with warm days and nights. The city experiences some of the highest temperatures of the year with highs reaching 27.3°C (81.1°F) and lows at around 17.1°C (62.8°F). Despite having the onset of summer, the fair share of sunshine received by the city facilitates a splendid climate, making December a popular time for visitors. The weather in December is indeed a clear indication of the forthcoming heat of the summer season.

Temperature

At the onset of December, Mendoza records an average high-temperature of a still warm 27.3°C (81.1°F), showing little deviation from the preceding month. During December in Mendoza, Argentina, the average low-temperature is recorded at a refreshing 17.1°C (62.8°F).

Humidity

With an average relative humidity of 39%, December is the least humid month in Mendoza.

Rainfall

In Mendoza, in December, it is raining for 13.2 days, with typically 54mm (2.13") of accumulated precipitation. Throughout the year, there are 92.6 rainfall days, and 324mm (12.76") of precipitation is accumulated.

Snowfall

January through May, October through December are months without snowfall in Mendoza, Argentina.

Daylight

The month with the longest days in Mendoza is December, with an average of 14h and 18min of daylight.
On the first day of the month, sunrise is at 06:19 and sunset at 20:29. On the last day of December, sunrise is at 06:30 and sunset at 20:47 -03.

Sunshine

January, September and December, with an average of 9.7h of sunshine, are months with the most sunshine.

UV index

The months with the highest UV index are January, February and December, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: An average maximum UV index of 6 in December leads to these recommendations:
Persist in precautions and follow sun safety policies. Keeping sunburn at bay is imperative. Limit your direct sun exposure, especially between 10 a.m. and 4 p.m., when UV radiation is strongest. Shade structures might not provide complete sun protection. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.
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Frequently asked questions

What is the average December temperature in Mendoza?

The average high-temperature, in December, in Mendoza, is 27.3°C (81.1°F), while the average low-temperature is 17.1°C (62.8°F). The average heat index (a.k.a. 'real feel', 'felt air temperature'), which takes the relative humidity and factors it into the air temperature reading, in January is calculated to be 28°C (82.4°F).

What is the least humid month in Mendoza?

December is the least humid month, with an average relative humidity of 39%.

What is the average humidity in December in Mendoza?

In December, the average relative humidity is 39%.

How much does it rain in Mendoza in December?

In Mendoza, Argentina, during December, the rain falls for 13.2 days and regularly aggregates up to 54mm (2.13") of precipitation.

When it does not snow in Mendoza?

In Mendoza, Argentina, snow does not fall in January through May, October through December.

When are the longest days in Mendoza?

December has the longest days of the year in Mendoza, Argentina, with an average of 14h and 18min of daylight.

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

In December, the average day length is 14h and 17min.

What time are sunrise and sunset in December in Mendoza?

In December, on the first day of the month, sunrise is at 06:19 and sunset at 20:29. On the last day of the month, sunrise is at 06:30 and sunset at 20:47 -03.

What are the months with the most sunshine in Mendoza?

January, September and December, with an average of 9.7h of sunshine, are months with the most sunshine in Mendoza.

How many hours of sunshine does Mendoza have in December?

In Mendoza, Argentina, the average sunshine duration in December is 9.7h.

When is the highest UV index in Mendoza?

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

What is the UV index intensity in December in Mendoza?

In Mendoza, Argentina, the average daily maximum UV index in December is 6. A UV Index of 6 to 7 symbolizes a high health risk from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover

Average temperature in December
Mendoza, Argentina

Average temperature in December - Mendoza, Argentina
  • Average high temperature in December: 27.3°C

The warmest month (with the highest average high temperature) is January (28.3°C).
The month with the lowest average high temperature is July (11.2°C).

  • Average low temperature in December: 17.1°C

The month with the highest average low temperature is January (18.5°C).
The coldest month (with the lowest average low temperature) is July (3.2°C).

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Average pressure in December
Mendoza, Argentina

Average pressure in December - Mendoza, Argentina
  • Average pressure in December: 1011.2mbar

The month with the highest atmospheric pressure is July (1018.6mbar).
The month with the lowest atmospheric pressure is December (1011.2mbar).

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Average wind speed in December
Mendoza, Argentina

Average wind speed in December - Mendoza, Argentina
  • Average wind speed in December: 12.7km/h

The windiest month (with the highest average wind speed) is November (12.8km/h).
The calmest month (with the lowest average wind speed) is June (7.7km/h).

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Average humidity in December
Mendoza, Argentina

Average humidity in December - Mendoza, Argentina
  • Average humidity in December: 39%

The month with the highest relative humidity is May (60%).
The month with the lowest relative humidity is December (39%).

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Average rainfall in December
Mendoza, Argentina

Average rainfall in December - Mendoza, Argentina
  • Average rainfall in December: 54mm

The wettest month (with the highest rainfall) is January (69mm).
The driest months (with the least rainfall) are May and July (5mm).

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Average rainfall days in December
Mendoza, Argentina

Average rainfall days in December - Mendoza, Argentina
  • Average rainfall days in December: 13.2 days

The month with the highest number of rainy days is January (13.8 days).
The month with the least rainy days is July (2.5 days).

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Average snowfall in December
Mendoza, Argentina

Average snowfall in December - Mendoza, Argentina
  • Average snowfall in December: 0mm

The month with the highest snowfall is July (17mm).
The months with the least snowfall are January, February, March, April, May, October, November and December (0mm).

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Average snowfall days in December
Mendoza, Argentina

Average snowfall days in December - Mendoza, Argentina
  • Average snowfall days in December: 0 days

The month with the highest number of snowfall days is July (0.8 days).
The months with the least snowfall days are January, February, March, April, May, October, November and December (0 days).

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Average daylight in December /
Average sunshine in December
Mendoza, Argentina

Average daylight in December / Average sunshine in December - Mendoza, Argentina
  • Average daylight in December: 14h and 2min

The month with the longest days is December (Average daylight: 14h and 18min).
The month with the shortest days is June (Average daylight: 10h and 0min).

  • Average sunshine in December: 9h and 4min

The months with the most sunshine are January, September and December (Average sunshine: 9h and 42min).
The months with the least sunshine are April and May (Average sunshine: 9h and 24min).

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Average sunshine days in December
Mendoza, Argentina

Average sunshine days in December - Mendoza, Argentina
  • Average sunshine days in December: 15 days

The month with the most sunshine days is July (27.6 days).
The month with the least sunshine days is February (12.6 days).

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Average UV index in December
Mendoza, Argentina

Average UV index in December - Mendoza, Argentina
  • 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 and July (UV index 3).

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Average cloud cover in December
Mendoza, Argentina

Average cloud cover in December - Mendoza, Argentina
  • Average cloud cover in December: 12

The months with the most cloud cover are April, May and October (Cloud cover 16).
The month with the least cloud cover is June (Cloud cover 11).

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Average visibility in December
Mendoza, Argentina

Average visibility in December - Mendoza, Argentina
  • 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).

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Mendoza, Argentina

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