Climate - Mendoza (Argentina)

The climate of Mendoza is arid subtropical, affected by altitude, with dry, mild winters (but during which it can get cold at night), and very hot, quite rainy summers. In summer, the rains (which, however, are usually not abundant) often occur in the form of thunderstorms. January is the wettest month.
The city is located in north-central Argentina, at 32 degrees south latitude, and 750 meters (2,460 feet) above sea level. About 110 km (70 mi) to the west is Aconcagua, the highest mountain in the Americas with its 6,962 meters (22,841 feet).
Despite the altitude, in summer, from December to February (and sometimes also in spring, in October and November), there can be heat waves, in which the temperature can reach or exceed 40 °C (104 °F). In January 2003, it reached 44.4 °C (111.9 °F).
Even in summer, however, there can be outbursts of cool air from the south, perhaps accompanied by a thunderstorm, which can greatly lower the temperature for two or three days, so much so that at night it can be very cool even in midsummer.
Since winter is dry, snow in Mendoza is rare, however, it can occur from time to time, such as in the months of July 2000, 2007 and 2010.
On the other hand, night frosts are quite frequent. In July 1976 the temperature dropped to -7.8 °C (18 °F).
On the other hand, the wind that comes down from the mountains, called Zonda and similar to the Föhn and the Chinook, is able to raise the temperature by several degrees, it is no coincidence that the heat records are around 30 °C (86 °F) even in winter.

Best Time

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To visit Mendoza you can choose the period from mid-April to mid-May, since in winter it can be cold, while in spring and summer it can be very hot.

Mendoza - Climate data

In Mendoza, the average temperature of the coldest month (July) is of 8.8 °C (47.8 °F), that of the warmest month (January) is of 26.4 °C (79.6 °F). Here are the average temperatures.
In Mendoza, precipitation amounts to 235 millimeters (9.3 inches) per year: it is therefore scarce. It ranges from 6 mm (0.2 in) in the driest month (June) to 50 mm (2 in) in the wettest one (January). Here is the average precipitation.
In Mendoza, there are on average around 2870 sunshine hours per year. Here are the average hours of sunshine per day.

Mendoza - Weather by month

Based on the period 1991-2020

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In January, the hottest month of the year, the weather in Mendoza is usually warm to hot. However, there are remarkable differences between night and day. The average temperature is of 26.4 °C (80 °F), with a minimum of 19.2 °C (66.5 °F) and a maximum of 33.7 °C (92.6 °F).
On the coldest nights of the month, the temperature usually drops to around 13.5 °C (56.5 °F). However, it dropped to 8 °C (46.4 °F) in January 2005.
On the warmest days of the month, the temperature usually reaches around 39 °C (102 °F). However, it reached 44.4 °C (111.9 °F) in January 2003.
Precipitation amounts to 50 mm (2 in), distributed over 6 days.
The day lasts on average 14 hours and 0 minutes.
There are on average 9.5 hours of sunshine per day. So, the sun shines 69% of the time.
The average humidity is 46%.
The average wind speed is 10 kph (6 mph).

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In February, the weather in Mendoza is usually warm to hot. However, there are remarkable differences between night and day. The average temperature is of 24.7 °C (76 °F), with a minimum of 17.7 °C (63.9 °F) and a maximum of 31.7 °C (89.1 °F).
On the coldest nights of the month, the temperature usually drops to around 11.5 °C (53 °F). However, it dropped to 7.8 °C (46 °F) in February 1995.
On the warmest days of the month, the temperature usually reaches around 37.5 °C (99.5 °F). However, it reached 40.5 °C (104.9 °F) in February 2017.
Precipitation amounts to 35 mm (1.4 in), distributed over 5 days.
The day lasts on average 13 hours and 10 minutes.
There are on average 9 hours of sunshine per day. So, the sun shines 69% of the time.
The average humidity is 51%.
The average wind speed is 9 kph (5 mph).

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In March, the weather in Mendoza is usually warm. However, there are remarkable differences between night and day. The average temperature is of 22.3 °C (72 °F), with a minimum of 15.5 °C (60 °F) and a maximum of 29 °C (84.2 °F).
On the coldest nights, the temperature usually drops to around 8.5 °C (47.5 °F). However, it dropped to 5.1 °C (41.2 °F) in March 1999.
On the warmest days, the temperature usually reaches around 34.5 °C (94.5 °F). However, it reached 37.7 °C (99.9 °F) in March 1999.
Precipitation amounts to 35 mm (1.4 in), distributed over 5 days.
The day lasts on average 12 hours and 10 minutes.
There are on average 7.5 hours of sunshine per day. So, the sun shines 62% of the time.
The average humidity is 57%.
The average wind speed is 7 kph (5 mph).

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In April, the weather in Mendoza is usually very mild. However, there are remarkable differences between night and day. The average temperature is of 17.3 °C (63 °F), with a minimum of 10.6 °C (51.1 °F) and a maximum of 24 °C (75.2 °F).
On the coldest nights, which normally occur at the end of the month, the temperature usually drops to around 4 °C (39.5 °F). However, it dropped to -0.8 °C (30.6 °F) in April 2008.
On the warmest days, which normally occur at the beginning of the month, the temperature usually reaches around 29.5 °C (85.5 °F). However, it reached 33.2 °C (91.8 °F) in April 2011.
Precipitation amounts to 15 mm (0.6 in), distributed over 4 days.
The day lasts on average 11 hours and 10 minutes.
There are on average 7.5 hours of sunshine per day. So, the sun shines 65% of the time.
The average humidity is 61%.
The average wind speed is 6 kph (4 mph).

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In May, the weather in Mendoza is usually mild. However, there are remarkable differences between night and day. The average temperature is of 12.9 °C (55 °F), with a minimum of 6.3 °C (43.3 °F) and a maximum of 19.5 °C (67.1 °F).
On the coldest nights, which normally occur at the end of the month, the temperature usually drops to around 0.5 °C (32.5 °F). However, it dropped to -3.2 °C (26.2 °F) in May 2008.
On the warmest days, which normally occur at the beginning of the month, the temperature usually reaches around 25.5 °C (78 °F). However, it reached 31.7 °C (89.1 °F) in May 1997.
Precipitation amounts to 10 mm (0.4 in), distributed over 3 days.
The day lasts on average 10 hours and 25 minutes.
There are on average 6.5 hours of sunshine per day. So, the sun shines 60% of the time.
The average humidity is 65%.
The average wind speed is 5 kph (3 mph).

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In June, the weather in Mendoza is usually mild. However, there are remarkable differences between night and day. The average temperature is of 9.5 °C (49 °F), with a minimum of 2.4 °C (36.3 °F) and a maximum of 16.5 °C (61.7 °F).
On the coldest nights, the temperature usually drops to around -2.5 °C (27.5 °F). However, it dropped to -5.6 °C (21.9 °F) in June 1994.
On the warmest days, the temperature usually reaches around 23.5 °C (74 °F). However, it reached 30.4 °C (86.7 °F) in June 2006.
Precipitation amounts to only 6 mm (0.2 in), distributed over 2 days.
The day lasts on average 10 hours and 0 minutes. June 21, the winter solstice, is the shortest day of the year in the Southern Hemisphere.
There are on average 5.5 hours of sunshine per day. So, the sun shines 56% of the time.
The average humidity is 63%.
The average wind speed is 5 kph (3 mph).

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In July, the coldest month of the year, the weather in Mendoza is usually mild. However, there are remarkable differences between night and day. The average temperature is of 8.8 °C (48 °F), with a minimum of 1.4 °C (34.5 °F) and a maximum of 16.1 °C (61 °F).
On the coldest nights of the month, the temperature usually drops to around -3.5 °C (25.5 °F). However, it dropped to -7.5 °C (18.5 °F) in July 2007.
On the warmest days of the month, the temperature usually reaches around 23.5 °C (74.5 °F). However, it reached 29 °C (84.2 °F) in July 2011.
Precipitation amounts to only 8 mm (0.3 in), distributed over 3 days.
The day lasts on average 10 hours and 10 minutes.
There are on average 6 hours of sunshine per day. So, the sun shines 58% of the time.
The average humidity is 58%.
The average wind speed is 6 kph (4 mph).

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In August, the weather in Mendoza is usually mild. However, there are remarkable differences between night and day. The average temperature is of 11.5 °C (53 °F), with a minimum of 3.8 °C (38.8 °F) and a maximum of 19.2 °C (66.6 °F).
On the coldest nights of the month, the temperature usually drops to around -2 °C (28.5 °F). However, it dropped to -5.3 °C (22.5 °F) in August 1999.
On the warmest days of the month, the temperature usually reaches around 27.5 °C (81.5 °F). However, it reached 33 °C (91.4 °F) in August 2015.
Precipitation amounts to only 8 mm (0.3 in), distributed over 2 days.
The day lasts on average 11 hours and 0 minutes.
There are on average 7.5 hours of sunshine per day. So, the sun shines 67% of the time.
The average humidity is 49%.
The average wind speed is 7 kph (4 mph).

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In September, the weather in Mendoza is usually very mild. However, there are remarkable differences between night and day. The average temperature is of 15.0 °C (59 °F), with a minimum of 7.5 °C (45.4 °F) and a maximum of 22.6 °C (72.7 °F).
On the coldest nights, which normally occur at the end of the month, the temperature usually drops to around 1 °C (33.5 °F). However, it dropped to -2 °C (28.4 °F) in September 2019.
On the warmest days, which normally occur at the beginning of the month, the temperature usually reaches around 31 °C (87.5 °F). However, it reached 36 °C (96.8 °F) in September 2018.
Precipitation amounts to 15 mm (0.6 in), distributed over 4 days.
The day lasts on average 11 hours and 55 minutes.
There are on average 7.5 hours of sunshine per day. So, the sun shines 63% of the time.
The average humidity is 45%.
The average wind speed is 8 kph (5 mph).

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In October, the weather in Mendoza is usually warm. However, there are remarkable differences between night and day. The average temperature is of 19.2 °C (67 °F), with a minimum of 11.8 °C (53.2 °F) and a maximum of 26.6 °C (79.9 °F).
On the coldest nights, which normally occur at the end of the month, the temperature usually drops to around 5 °C (40.5 °F). However, it dropped to 1 °C (33.8 °F) in October 2002.
On the warmest days, which normally occur at the beginning of the month, the temperature usually reaches around 34 °C (93.5 °F). However, it reached 40.1 °C (104.2 °F) in October 2009.
Precipitation amounts to 10 mm (0.4 in), distributed over 3 days.
The day lasts on average 13 hours and 0 minutes.
There are on average 9 hours of sunshine per day. So, the sun shines 70% of the time.
The average humidity is 43%.
The average wind speed is 9 kph (6 mph).

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In November, the weather in Mendoza is usually warm to hot. However, there are remarkable differences between night and day. The average temperature is of 22.6 °C (73 °F), with a minimum of 15.1 °C (59.2 °F) and a maximum of 30.1 °C (86.2 °F).
On the coldest nights, which normally occur at the end of the month, the temperature usually drops to around 8 °C (46.5 °F). However, it dropped to 2.7 °C (36.9 °F) in November 1992.
On the warmest days, which normally occur at the beginning of the month, the temperature usually reaches around 36.5 °C (98 °F). However, it reached 40 °C (104 °F) in November 1991.
Precipitation amounts to 15 mm (0.6 in), distributed over 4 days.
The day lasts on average 13 hours and 50 minutes.
There are on average 10 hours of sunshine per day. So, the sun shines 71% of the time.
The average humidity is 41%.
The average wind speed is 10 kph (6 mph).

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In December, the weather in Mendoza is usually warm to hot. However, there are remarkable differences between night and day. The average temperature is of 25.4 °C (78 °F), with a minimum of 18 °C (64.4 °F) and a maximum of 32.8 °C (91.1 °F).
On the coldest nights of the month, the temperature usually drops to around 11 °C (52 °F). However, it dropped to 6.3 °C (43.3 °F) in December 2001.
On the warmest days of the month, the temperature usually reaches around 39 °C (102 °F). However, it reached 43 °C (109.4 °F) in December 2012.
Precipitation amounts to 25 mm (1 in), distributed over 4 days.
The day lasts on average 14 hours and 20 minutes. So the days are long. December 21, the summer solstice, is the longest day of the year in the Southern Hemisphere.
There are on average 9 hours of sunshine per day. So, the sun shines 64% of the time.
The average humidity is 42%.
The average wind speed is 10 kph (6 mph).