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Uruguaiana, Rio Grande do Sul Weather by Month and Climate Averages
Monthly normals · Rain · Snow
Sunshine · Freeze dates · Records · Best time to visit
What is the weather like in Uruguaiana, Rio Grande do Sul?
Uruguaiana, Rio Grande do Sul gets 1330 mm of precipitation a year over about 76 rainy days. January is the warmest month (average high 33°C) and July the coldest (average low 8°C).
Humid subtropical climate
Uruguaiana, Rio Grande do Sul has hot summers and warm winters. Daytime highs range from about 20°C in July to 33°C in January. December is usually the wettest month. The most comfortable time to visit is typically May to September, when daytime highs sit near 22°C.
| Season | Months | Avg low | Avg high |
|---|---|---|---|
| Winter | Jun–Aug | 9° | 21° |
| Spring | Sep–Nov | 14° | 27° |
| Summer | Dec–Feb | 20° | 33° |
| Autumn | Mar–May | 15° | 27° |
How much rain does Uruguaiana get?
Uruguaiana gets 1330 mm of precipitation in an average year, spread over about 76 days with measurable rain. That is more rainy days than 93% of Argentina.
December is the wettest month, with 151 mm. August is the driest, with 56 mm. October has the most rainy days, about 8.
Uruguaiana weather by month
Uruguaiana weather in January
In January, Uruguaiana averages a high of 33°C and a low of 21°C. It gets 126 mm of precipitation over about 6 rainy days. Estimated sunshine is 63% of daylight hours, derived from ERA5 cloud cover. The January record high is 42°C (2022) and the record low is 10°C (1992).
Uruguaiana weather in February
In February, Uruguaiana averages a high of 32°C and a low of 20°C. It gets 117 mm of precipitation over about 7 rainy days. Estimated sunshine is 65% of daylight hours, derived from ERA5 cloud cover. The February record high is 42°C (2025) and the record low is 9°C (2023).
Uruguaiana weather in March
In March, Uruguaiana averages a high of 31°C and a low of 18°C. It gets 130 mm of precipitation over about 6 rainy days. Estimated sunshine is 58% of daylight hours, derived from ERA5 cloud cover. The March record high is 39°C (2025) and the record low is 6°C (2012).
Uruguaiana weather in April
In April, Uruguaiana averages a high of 27°C and a low of 15°C. It gets 141 mm of precipitation over about 7 rainy days. Estimated sunshine is 59% of daylight hours, derived from ERA5 cloud cover. The April record high is 37°C (2004) and the record low is 3°C (2008).
Uruguaiana weather in May
In May, Uruguaiana averages a high of 23°C and a low of 12°C. It gets 104 mm of precipitation over about 7 rainy days. Estimated sunshine is 49% of daylight hours, derived from ERA5 cloud cover. The May record high is 34°C (2009) and the record low is 0°C (1980). May is one of the most comfortable months to visit.
Uruguaiana weather in June
In June, Uruguaiana averages a high of 21°C and a low of 9°C. It gets 79 mm of precipitation over about 6 rainy days. Estimated sunshine is 46% of daylight hours, derived from ERA5 cloud cover. The June record high is 32°C (2012) and the record low is -4°C (2011). June is one of the most comfortable months to visit.
Uruguaiana weather in July
In July, Uruguaiana averages a high of 20°C and a low of 8°C. It gets 70 mm of precipitation over about 6 rainy days. Estimated sunshine is 50% of daylight hours, derived from ERA5 cloud cover. The July record high is 32°C (1979) and the record low is -3°C (1988). July is one of the most comfortable months to visit.
Uruguaiana weather in August
In August, Uruguaiana averages a high of 23°C and a low of 10°C. It gets 56 mm of precipitation over about 5 rainy days. Estimated sunshine is 63% of daylight hours, derived from ERA5 cloud cover. The August record high is 36°C (2021) and the record low is -3°C (1991). August is one of the most comfortable months to visit.
Uruguaiana weather in September
In September, Uruguaiana averages a high of 24°C and a low of 12°C. It gets 86 mm of precipitation over about 6 rainy days. Estimated sunshine is 50% of daylight hours, derived from ERA5 cloud cover. The September record high is 37°C (2013) and the record low is 0°C (2006). September is one of the most comfortable months to visit.
Uruguaiana weather in October
In October, Uruguaiana averages a high of 27°C and a low of 15°C. It gets 150 mm of precipitation over about 8 rainy days. Estimated sunshine is 62% of daylight hours, derived from ERA5 cloud cover. The October record high is 39°C (1978) and the record low is 1°C (2000).
Uruguaiana weather in November
In November, Uruguaiana averages a high of 30°C and a low of 17°C. It gets 120 mm of precipitation over about 6 rainy days. Estimated sunshine is 59% of daylight hours, derived from ERA5 cloud cover. The November record high is 39°C (2020) and the record low is 6°C (1992).
Uruguaiana weather in December
In December, Uruguaiana averages a high of 33°C and a low of 19°C. It gets 151 mm of precipitation over about 7 rainy days. Estimated sunshine is 66% of daylight hours, derived from ERA5 cloud cover. The December record high is 41°C (1995) and the record low is 8°C (1982).
Sunshine, humidity and wind in Uruguaiana
December is the sunniest month in Uruguaiana, with estimated sunshine of 66% of daylight hours from ERA5 cloud cover. June is the cloudiest, at 46%. The annual cloud-cover estimate is 58% of daylight hours; it is not a measurement of sunshine duration. Uruguaiana is cloudier than 71% of Argentina.
Humidity peaks in June at 79% and is lowest in January at 60%.
Uruguaiana has about 34 days a year above 32°C. Uruguaiana is hotter than 70% of Argentina.
First and last freeze in Uruguaiana
The first fall freeze in Uruguaiana typically comes around July 1, and the last spring freeze around July 12. That leaves a frost-free growing season of about 354 days.
Uruguaiana weather records
These records cover PASO DE LOS LIBRES during 1973–2025. Earlier records or other stations in the city may differ.
The hottest temperature on record at the Uruguaiana station is 42°C, on January 21, 2022. The coldest is -4°C, on June 27, 2011.
The wettest day in the available station history brought 423 mm of precipitation, on October 15, 2001.
30 all-time records have been set at the station since 1973.
The best time to visit Uruguaiana
The most comfortable time to visit is typically May to September, when daytime highs sit near 22°C.
Winter (June–August) is warm, with average highs around 21°C and lows near 9°C.
Spring (September–November) is warm, with average highs around 27°C and lows near 14°C.
Summer (December–February) is hot, with average highs around 33°C and lows near 20°C.
Autumn (March–May) is warm, with average highs around 27°C and lows near 15°C.
Monthly climate
| Month | Average low | Average high | Precip | Rain days | Humidity | Estimated sunshine | Record high | Record low |
|---|---|---|---|---|---|---|---|---|
| January | 21° | 33° | 126 mm | 6 | 60% | 63% | 42° | 10° |
| February | 20° | 32° | 117 mm | 7 | 60% | 65% | 42° | 9° |
| March | 18° | 31° | 130 mm | 6 | 68% | 58% | 39° | 6° |
| April | 15° | 27° | 141 mm | 7 | 71% | 59% | 37° | 3° |
| May | 12° | 23° | 104 mm | 7 | 77% | 49% | 34° | 0° |
| June | 9° | 21° | 79 mm | 6 | 79% | 46% | 32° | -4° |
| July | 8° | 20° | 70 mm | 6 | 75% | 50% | 32° | -3° |
| August | 10° | 23° | 56 mm | 5 | 69% | 63% | 36° | -3° |
| September | 12° | 24° | 86 mm | 6 | 73% | 50% | 37° | 0° |
| October | 15° | 27° | 150 mm | 8 | 66% | 62% | 39° | 1° |
| November | 17° | 30° | 120 mm | 6 | 61% | 59% | 39° | 6° |
| December | 19° | 33° | 151 mm | 7 | 60% | 66% | 41° | 8° |
Station: PASO DE LOS LIBRES, 10 km from the city. Temperature normal baseline: 1991–2020, calculated from available NOAA GHCN-Daily observations. Available station history: 1973–2025; record values refer to this station and period, not the entire city’s history. Precipitation includes rain and the water equivalent of frozen precipitation; snowfall depth is shown separately when available. Sources and methods
From ERA5 reanalysis. Sunshine is estimated from cloud cover.
Uruguaiana climate questions
How much rain does Uruguaiana get?
Uruguaiana gets 1330 mm of precipitation in an average year, over about 76 rainy days.
What is the wettest month in Uruguaiana?
December is the wettest month in Uruguaiana, with 151 mm. August is the driest, with 56 mm.
How many rainy days does Uruguaiana have a year?
Uruguaiana has about 76 days with measurable rain in an average year. October has the most, about 8.
What is the hottest month in Uruguaiana?
January is the warmest month in Uruguaiana, with an average high of 33°C.
What is the coldest month in Uruguaiana?
July is the coldest month in Uruguaiana, with an average low of 8°C.
What is the record high temperature in Uruguaiana?
Within the available 1973–2025 station history, the record high at the Uruguaiana station is 42°C, set on January 21, 2022. The record low is -4°C, on June 27, 2011.
What is the sunniest month in Uruguaiana?
December is the sunniest month in Uruguaiana, with estimated sunshine of 66% of daylight hours from ERA5 cloud cover. June is the cloudiest.
When is the first frost in Uruguaiana?
The first fall freeze in Uruguaiana typically comes around July 1. The last spring freeze is around July 12.
What is the best time to visit Uruguaiana?
The most comfortable time to visit is typically May to September, when daytime highs sit near 22°C.