Climate - Tarija (Bolivia)

In Tarija (or San Bernardo de la Frontera de Tarixa), there is a subtropical mountain climate, with quite stable daytime temperatures throughout the year, while during the austral winter, from May to September, it gets cold at night.
The city is located in southern Bolivia, on the Andean plateau, at 1,850 meters (6,070 feet) above sea level.
The rains are frequent from November to March, while the winter is dry and sunny.
The difference in temperature between night and day is considerable, especially in winter. During the day, the tropical mountain sun warms the ground strongly, but after sunset the temperature plunges by many degrees.
During the day it can get hot all year round, in fact the heat records exceed 30 °C (86 °F) even in winter.
Sometimes, cold air of Antarctic origin can lower the temperature by several degrees, especially in winter, when the maximum temperature can remain below 10 °C (50 °F). Occasionally it can even snow. In July 2019, the city was covered in white, as it hadn't happened for several years.
Therefore, especially in winter, the temperature changes are considerable, and you can go from hot to cold in a few days, and vice versa.

The average temperature of the coldest month (July) is of 13.8 °C (56.8 °F), that of the warmest month (December) is of 21.5 °C (70.7 °F). Here are the average temperatures.
Precipitation amounts to 585 millimeters (23 inches) per year: so, it is at an intermediate level. It ranges from 0 mm (0 in) in the driest months (June, July) to 130 mm (5.1 in) in the wettest one (January). Here is the average precipitation.

Tarija - Weather by month

Based on the period 1991-2020
(January - February - March - April - May - June - July - August - September - October - November - December)

In January, the average temperature is of 21.3 °C (70 °F), with a minimum of 15.3 °C (59.5 °F) and a maximum of 27.4 °C (81.3 °F).
On the coldest nights of the month, the temperature usually drops to around 11.5 °C (52.5 °F). However, in January 1997, it dropped to 7 °C (44.6 °F).
On the warmest days of the month, the temperature usually reaches around 33 °C (91.5 °F). However, in January 1998, it reached 38 °C (100.4 °F).
Precipitation amounts to 130 mm (5.1 in), distributed over 15 days.
The average humidity is 67%.
The average wind speed is 7 kph (5 kph).

In February, the average temperature is of 20.7 °C (69 °F), with a minimum of 14.8 °C (58.7 °F) and a maximum of 26.6 °C (79.9 °F).
On the coldest nights of the month, the temperature usually drops to around 11.5 °C (52.5 °F). However, in February 1993, it dropped to 5 °C (41 °F).
On the warmest days of the month, the temperature usually reaches around 32 °C (90 °F). However, in February 2016, it reached 36.8 °C (98.2 °F).
Precipitation amounts to 100 mm (3.9 in), distributed over 12 days.
The average humidity is 69%.
The average wind speed is 7 kph (4 kph).

In March, the average temperature is of 20.4 °C (69 °F), with a minimum of 14.4 °C (57.9 °F) and a maximum of 26.3 °C (79.3 °F).
On the coldest nights of the month, the temperature usually drops to around 10 °C (50 °F). However, in March 2000, it dropped to 7 °C (44.6 °F).
On the warmest days of the month, the temperature usually reaches around 32.5 °C (90.5 °F). However, in March 2017, it reached 37.5 °C (99.5 °F).
Precipitation amounts to 90 mm (3.5 in), distributed over 11 days.
The average humidity is 70%.
The average wind speed is 7 kph (4 kph).

In April, the average temperature is of 19 °C (66 °F), with a minimum of 12 °C (53.5 °F) and a maximum of 26 °C (78.9 °F).
On the coldest nights of the month, the temperature usually drops to around 5 °C (41.5 °F). However, in April 2016, it dropped to -1 °C (30.2 °F).
On the warmest days of the month, the temperature usually reaches around 32.5 °C (91 °F). However, in April 2016, it reached 37 °C (98.6 °F).
Precipitation amounts to 15 mm (0.6 in), distributed over 4 days.
The average humidity is 66%.
The average wind speed is 7 kph (4 kph).

In May, the average temperature is of 16.0 °C (61 °F), with a minimum of 7.4 °C (45.3 °F) and a maximum of 24.7 °C (76.4 °F).
On the coldest nights of the month, the temperature usually drops to around 0.5 °C (32.5 °F). However, in May 1992, it dropped to -2.8 °C (27 °F).
On the warmest days of the month, the temperature usually reaches around 32 °C (90 °F). However, in May 2013, it reached 35.2 °C (95.4 °F).
Precipitation amounts to only 2 mm (0.1 in), distributed over 1 days.
The average humidity is 59%.
The average wind speed is 7 kph (4 kph).

In June, the average temperature is of 14.2 °C (58 °F), with a minimum of 3.9 °C (39 °F) and a maximum of 24.5 °C (76 °F).
On the coldest nights of the month, the temperature usually drops to around -2.5 °C (28 °F). However, in June 1996, it dropped to -7.7 °C (18.1 °F).
On the warmest days of the month, the temperature usually reaches around 32 °C (89.5 °F). However, in June 2010, it reached 34.6 °C (94.3 °F).
Precipitation amounts to only 0 mm (0 in), distributed over 0 days.
The average humidity is 52%.
The average wind speed is 6 kph (4 kph).

In July, the coldest month of the year, the average temperature is of 13.8 °C (57 °F), with a minimum of 3.2 °C (37.8 °F) and a maximum of 24.3 °C (75.7 °F).
On the coldest nights of the month, the temperature usually drops to around -3.5 °C (26 °F). However, in July 2010, it dropped to -8 °C (17.6 °F).
On the warmest days of the month, the temperature usually reaches around 33 °C (91 °F). However, in July 2013, it reached 35.6 °C (96.1 °F).
Precipitation amounts to only 0 mm (0 in), distributed over 0 days.
The average humidity is 50%.
The average wind speed is 7 kph (4 kph).

In August, the average temperature is of 15.9 °C (61 °F), with a minimum of 5.8 °C (42.4 °F) and a maximum of 26.1 °C (78.9 °F).
On the coldest nights of the month, the temperature usually drops to around -1 °C (30.5 °F). However, in August 2006, it dropped to -4.8 °C (23.4 °F).
On the warmest days of the month, the temperature usually reaches around 34.5 °C (94 °F). However, in August 2015, it reached 37.4 °C (99.3 °F).
Precipitation amounts to only 2 mm (0.1 in), distributed over 1 days.
The average humidity is 48%.
The average wind speed is 9 kph (6 kph).

In September, the average temperature is of 17.9 °C (64 °F), with a minimum of 8.8 °C (47.8 °F) and a maximum of 27 °C (80.7 °F).
On the coldest nights of the month, the temperature usually drops to around 1.5 °C (35 °F). However, in September 2003, it dropped to -2.4 °C (27.7 °F).
On the warmest days of the month, the temperature usually reaches around 36 °C (96.5 °F). However, in September 2016, it reached 39.5 °C (103.1 °F).
Precipitation amounts to only 7 mm (0.3 in), distributed over 3 days.
The average humidity is 49%.
The average wind speed is 11 kph (7 kph).

In October, the average temperature is of 20.4 °C (69 °F), with a minimum of 12.7 °C (54.8 °F) and a maximum of 28.2 °C (82.7 °F).
On the coldest nights of the month, the temperature usually drops to around 6.5 °C (43.5 °F). However, in October 1995, it dropped to 2.8 °C (37 °F).
On the warmest days of the month, the temperature usually reaches around 36.5 °C (98 °F). However, in October 2014, it reached 39.7 °C (103.5 °F).
Precipitation amounts to 35 mm (1.4 in), distributed over 7 days.
The average humidity is 55%.
The average wind speed is 11 kph (7 kph).

In November, the average temperature is of 20.6 °C (69 °F), with a minimum of 13.7 °C (56.6 °F) and a maximum of 27.6 °C (81.7 °F).
On the coldest nights of the month, the temperature usually drops to around 9 °C (48 °F). However, in November 1999, it dropped to 4.2 °C (39.6 °F).
On the warmest days of the month, the temperature usually reaches around 35 °C (95 °F). However, in November 2003, it reached 39 °C (102.2 °F).
Precipitation amounts to 75 mm (3 in), distributed over 10 days.
The average humidity is 59%.
The average wind speed is 10 kph (6 kph).

In December, the average temperature is of 21.5 °C (71 °F), with a minimum of 15.1 °C (59.1 °F) and a maximum of 28 °C (82.4 °F).
On the coldest nights of the month, the temperature usually drops to around 11 °C (51.5 °F). However, in December 2010, it dropped to 6 °C (42.8 °F).
On the warmest days of the month, the temperature usually reaches around 34.5 °C (94 °F). However, in December 2015, it reached 37.7 °C (99.9 °F).
Precipitation amounts to 125 mm (4.9 in), distributed over 13 days.
The average humidity is 63%.
The average wind speed is 9 kph (5 kph).