Climate in Uruguaiana (Rio Grande do Sul)

The climate of Uruguaiana is subtropical, with very mild winters (from May to August) and hot summers (from December to March). There is no real dry season, however, winter is the least rainy season.
The city is located in southern Brazil, in the state of Rio Grande do Sul, at 29 degrees south latitude. Across the Uruguay River lies the city of Paso de los Libres, Argentina.
In winter, from May to August (but sometimes also in September), there can be cold waves from the south, during which the temperature can drop to the freezing point or a little below at night, and can remain around 10 °C (50 °F) during the day. In July 1988 and in June 2012, it dropped to -3 °C (26.5 °F).
In summer, on the other hand, there can be heat waves.

Best Time

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There is no perfect time to visit Uruguaiana. From May to August, temperatures are normally mild, however, it can get cold at times. You can then choose the period from mid-April to mid-May, in which temperatures are intermediate between winter and summer and the rains are not too frequent.

Uruguaiana - Climate data

In Uruguaiana, the average temperature of the coldest month (July) is of 14.2 °C (57.5 °F), that of the warmest month (January) is of 26.4 °C (79.5 °F). Here are the average temperatures.
Precipitation amounts to 1410 millimeters (55.5 inches) per year: it is therefore quite abundant. It ranges from 50 mm (2 in) in the driest month (August) to 165 mm (6.5 in) in the wettest one (October). Here is the average precipitation.
There are on average around 2375 sunshine hours per year. Here are the average hours of sunshine per day.

Uruguaiana - Weather by month

Based on the period 1991-2020

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January, the hottest month of the year, is generally a warm to hot month. The average temperature is of 26.4 °C (80 °F), with a minimum of 20.9 °C (69.6 °F) and a maximum of 31.9 °C (89.5 °F).
On the coldest nights of the month, the temperature usually drops to around 15.5 °C (59.5 °F). However, it dropped to 10.5 °C (50.9 °F) in January 1991.
On the warmest days of the month, the temperature usually reaches around 37.5 °C (99 °F). However, it reached 41 °C (105.8 °F) in January 2006.
Precipitation amounts to 115 mm (4.5 in), distributed over 6 days.
The day lasts on average 13 hours and 50 minutes.
There are on average 8.5 hours of sunshine per day. So, the sun shines 62% of the time.
The average humidity is 63%.
The average wind speed is 13 kph (8 mph).

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February is generally a warm to hot month. The average temperature is of 25.5 °C (78 °F), with a minimum of 20.2 °C (68.3 °F) and a maximum of 30.9 °C (87.6 °F).
On the coldest nights of the month, the temperature usually drops to around 13.5 °C (56.5 °F). However, it dropped to 9 °C (48.2 °F) in February 2016.
On the warmest days of the month, the temperature usually reaches around 36.5 °C (97.5 °F). However, it reached 39 °C (102.2 °F) in February 2000.
Precipitation amounts to 155 mm (6.1 in), distributed over 7 days.
The day lasts on average 13 hours and 5 minutes.
There are on average 7.5 hours of sunshine per day. So, the sun shines 56% of the time.
The average humidity is 66%.
The average wind speed is 13 kph (8 mph).

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March is generally a warm to hot month. The average temperature is of 23.7 °C (75 °F), with a minimum of 18.2 °C (64.8 °F) and a maximum of 29.1 °C (84.4 °F).
On the coldest nights, the temperature usually drops to around 11 °C (52 °F). However, it dropped to 7 °C (44.6 °F) in March 2012.
On the warmest days, the temperature usually reaches around 35 °C (95 °F). However, it reached 39 °C (102.2 °F) in March 2005.
Precipitation amounts to 160 mm (6.3 in), distributed over 7 days.
The day lasts on average 12 hours and 10 minutes.
There are on average 7 hours of sunshine per day. So, the sun shines 58% of the time.
The average humidity is 66%.
The average wind speed is 12 kph (7 mph).

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April is generally a warm month. The average temperature is of 20.9 °C (70 °F), with a minimum of 15.8 °C (60.4 °F) and a maximum of 26.1 °C (79 °F).
On the coldest nights, which normally occur at the end of the month, the temperature usually drops to around 8 °C (47 °F). However, it dropped to 3 °C (37.4 °F) in April 2008.
On the warmest days, which normally occur at the beginning of the month, the temperature usually reaches around 33 °C (91.5 °F). However, it reached 37 °C (98.6 °F) in April 2006.
Precipitation amounts to 150 mm (5.9 in), distributed over 7 days.
The day lasts on average 11 hours and 20 minutes.
There are on average 6 hours of sunshine per day. So, the sun shines 52% of the time.
The average humidity is 68%.
The average wind speed is 12 kph (7 mph).

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May is generally a very mild month. The average temperature is of 16.9 °C (62 °F), with a minimum of 12.4 °C (54.2 °F) and a maximum of 21.4 °C (70.4 °F).
On the coldest nights, which normally occur at the end of the month, the temperature usually drops to around 4.5 °C (40.5 °F). However, it dropped to 1 °C (33.8 °F) in May 2008.
On the warmest days, which normally occur at the beginning of the month, the temperature usually reaches around 28.5 °C (83 °F). However, it reached 34 °C (93.2 °F) in May 2009.
Precipitation amounts to 125 mm (4.9 in), distributed over 6 days.
The day lasts on average 10 hours and 35 minutes.
There are on average 5.5 hours of sunshine per day. So, the sun shines 50% of the time.
The average humidity is 74%. Hence, the air is normally humid.
The average wind speed is 12 kph (7 mph).

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June is generally a very mild month. The average temperature is of 14.8 °C (59 °F), with a minimum of 10.5 °C (50.8 °F) and a maximum of 19.2 °C (66.5 °F).
On the coldest nights, the temperature usually drops to around 1.5 °C (35 °F). However, it dropped to -3 °C (26.6 °F) in June 2012.
On the warmest days, the temperature usually reaches around 27.5 °C (81.5 °F). However, it reached 31.2 °C (88.2 °F) in June 2005.
Precipitation amounts to 90 mm (3.5 in), distributed over 6 days.
The day lasts on average 10 hours and 20 minutes. June 21, the winter solstice, is the shortest day of the year in the Southern Hemisphere.
There are on average 4 hours of sunshine per day. So, the sun shines 40% of the time.
The average humidity is 76%. Hence, the air is normally humid.
The average wind speed is 13 kph (8 mph).

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July, the coldest month of the year, is generally a mild month. The average temperature is of 14.2 °C (58 °F), with a minimum of 9.5 °C (49.2 °F) and a maximum of 18.8 °C (65.9 °F).
On the coldest nights of the month, the temperature usually drops to around 0.5 °C (33 °F). However, it dropped to -2 °C (28.4 °F) in July 2000.
On the warmest days of the month, the temperature usually reaches around 28.5 °C (83 °F). However, it reached 31 °C (87.8 °F) in July 2005.
Precipitation amounts to 65 mm (2.6 in), distributed over 6 days.
The day lasts on average 10 hours and 30 minutes.
There are on average 5 hours of sunshine per day. So, the sun shines 48% of the time.
The average humidity is 73%. Hence, the air is normally humid.
The average wind speed is 14 kph (9 mph).

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August is generally a very mild month. The average temperature is of 16.2 °C (61 °F), with a minimum of 10.9 °C (51.6 °F) and a maximum of 21.5 °C (70.7 °F).
On the coldest nights of the month, the temperature usually drops to around 2 °C (36 °F). However, it dropped to -2.4 °C (27.7 °F) in August 1991.
On the warmest days of the month, the temperature usually reaches around 31.5 °C (89 °F). However, it reached 35 °C (95 °F) in August 2015.
Precipitation amounts to 50 mm (2 in), distributed over 4 days.
The day lasts on average 11 hours and 5 minutes.
There are on average 5.5 hours of sunshine per day. So, the sun shines 50% of the time.
The average humidity is 67%.
The average wind speed is 16 kph (10 mph).

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September is generally a very mild month. The average temperature is of 17.7 °C (64 °F), with a minimum of 12.6 °C (54.7 °F) and a maximum of 22.8 °C (73.1 °F).
On the coldest nights, which normally occur at the beginning of the month, the temperature usually drops to around 4.5 °C (40 °F). However, it dropped to 2 °C (35.6 °F) in September 2002.
On the warmest days, which normally occur at the end of the month, the temperature usually reaches around 32.5 °C (90 °F). However, it reached 36 °C (96.8 °F) in September 2004.
Precipitation amounts to 85 mm (3.3 in), distributed over 6 days.
The day lasts on average 12 hours and 0 minutes.
There are on average 6 hours of sunshine per day. So, the sun shines 49% of the time.
The average humidity is 67%.
The average wind speed is 16 kph (10 mph).

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October is generally a warm month. The average temperature is of 20.4 °C (69 °F), with a minimum of 15.3 °C (59.6 °F) and a maximum of 25.4 °C (77.7 °F).
On the coldest nights, which normally occur at the beginning of the month, the temperature usually drops to around 8 °C (46.5 °F). However, it dropped to 4 °C (39.2 °F) in October 1999.
On the warmest days, which normally occur at the end of the month, the temperature usually reaches around 34 °C (93 °F). However, it reached 37 °C (98.6 °F) in October 1991.
Precipitation amounts to 165 mm (6.5 in), distributed over 8 days.
The day lasts on average 12 hours and 55 minutes.
There are on average 6.5 hours of sunshine per day. So, the sun shines 52% of the time.
The average humidity is 67%.
The average wind speed is 17 kph (10 mph).

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November is generally a warm to hot month. The average temperature is of 22.6 °C (73 °F), with a minimum of 17 °C (62.5 °F) and a maximum of 28.2 °C (82.7 °F).
On the coldest nights, which normally occur at the beginning of the month, the temperature usually drops to around 9.5 °C (49.5 °F). However, it dropped to 6 °C (42.8 °F) in November 2007.
On the warmest days, which normally occur at the end of the month, the temperature usually reaches around 35 °C (95.5 °F). However, it reached 38 °C (100.4 °F) in November 2009.
Precipitation amounts to 125 mm (4.9 in), distributed over 6 days.
The day lasts on average 13 hours and 35 minutes.
There are on average 8.5 hours of sunshine per day. So, the sun shines 61% of the time.
The average humidity is 60%.
The average wind speed is 16 kph (10 mph).

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December is generally a warm to hot month. The average temperature is of 25.1 °C (77 °F), with a minimum of 19.5 °C (67.1 °F) and a maximum of 30.7 °C (87.3 °F).
On the coldest nights of the month, the temperature usually drops to around 13 °C (55.5 °F). However, it dropped to 10 °C (50 °F) in December 2001.
On the warmest days of the month, the temperature usually reaches around 36.5 °C (97.5 °F). However, it reached 40.2 °C (104.4 °F) in December 1995.
Precipitation amounts to 125 mm (4.9 in), distributed over 7 days.
The day lasts on average 14 hours and 0 minutes. December 21, the summer solstice, is the longest day of the year in the Southern Hemisphere.
There are on average 8 hours of sunshine per day. So, the sun shines 59% of the time.
The average humidity is 62%.
The average wind speed is 15 kph (9 mph).