Uruguaiana climate
Uruguaiana (Rio Grande do Sul, Brazil) has a humid subtropical climate (Köppen Cfa). The average temperature over the year is 20 °C67 °F, and about 1,414 mm56 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Uruguaiana climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin | Frost days |
|---|---|---|---|---|---|
| Jan | 3392 | 2068 | 2780 | 1375.4 | 0 |
| Feb | 3290 | 2067 | 2679 | 1234.8 | 0 |
| Mar | 3086 | 1763 | 2475 | 1154.5 | 0 |
| Apr | 2679 | 1457 | 2068 | 1495.9 | 0 |
| May | 2170 | 1051 | 1660 | 1184.6 | 0 |
| Jun | 1966 | 847 | 1356 | 732.9 | 1 |
| Jul | 1864 | 745 | 1355 | 632.5 | 2 |
| Aug | 2069 | 847 | 1458 | 692.7 | 0 |
| Sep | 2373 | 1050 | 1662 | 983.8 | 0 |
| Oct | 2679 | 1356 | 2067 | 1616.3 | 0 |
| Nov | 2985 | 1560 | 2272 | 1485.8 | 0 |
| Dec | 3290 | 1865 | 2578 | 1606.3 | 0 |
| Year | 3392 | 745 | 2067 | 1,41456 | 3 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total. Frost days are for the whole grid cell.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 64% | 54% | 6.9 | 13:51 |
| Feb | 66% | 54% | 6.2 | 13:10 |
| Mar | 70% | 47% | 5.4 | 12:21 |
| Apr | 75% | 51% | 4.1 | 11:24 |
| May | 83% | 53% | 3.1 | 10:39 |
| Jun | 86% | 54% | 2.6 | 10:15 |
| Jul | 84% | 49% | 2.9 | 10:24 |
| Aug | 81% | 46% | 3.7 | 11:04 |
| Sep | 78% | 51% | 4.5 | 11:58 |
| Oct | 76% | 54% | 5.5 | 12:52 |
| Nov | 69% | 48% | 6.7 | 13:40 |
| Dec | 64% | 52% | 7.0 | 14:03 |
Humid. = average relative humidity at 2 m; cloud = average cloud amount; solar = average daily solar energy reaching the ground in kWh/m² (all-sky); daylight in hours:minutes, calculated for the 15th of each month.
What the climate of Uruguaiana is like
The warmest month is January, with an average high of 33 °C92 °F and a low of 20 °C68 °F. The coldest is July, when highs average 18 °C64 °F and lows 7 °C45 °F. There is a clear seasonal cycle, with 14.2 °C25.5 °F between the average temperature of the warmest and the coolest month.
It is wet, with about 1,414 mm56 in of precipitation per year. The wettest three-month stretch is October–December, which brings 33% of the annual total. The wettest month is October (161 mm6.3 in), the driest is July (63 mm2.5 in).
Relative humidity ranges from 64% in December to 86% in June. The clearest skies (lowest average cloud amount, 46%) are typical of August. Average wind speed near the ground ranges from 8 km/h (5 mph) in April to 11 km/h (7 mph) in October. Daylight lasts from about 10.2 hours in June to 14.0 hours in December.
Best time to visit Uruguaiana
Based on these averages, the most comfortable months for sightseeing and outdoor activities are August and September: average highs of 20 °C69 °F to 23 °C73 °F with 69 mm2.7 in to 98 mm3.8 in of precipitation per month.
The most challenging month is December, which is hot, with average highs of 32 °C90 °F and very wet (160 mm6.3 in).
Comfort score: months are ranked by how close they come to an average high of 21–28 °C (70–82 °F), lows above 5 °C (41 °F), little precipitation and moderate humidity. The best-ranked months of each place are recommended, even where none meets all of these. These are general rules of thumb applied to long-term averages.
What to pack for Uruguaiana
- Summer (December–February) — highs 3290 to 33 °C92 °F, lows 1865 to 20 °C68 °F, about 140 mm5.5 in of precipitation a month. Pack very light, breathable clothing, a sun hat and plenty of water and an umbrella or light rain jacket.
- Autumn (March–May) — highs 2170 to 30 °C86 °F, lows 1051 to 17 °C63 °F, about 127 mm5.0 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses, an extra layer for the cooler mornings and evenings and an umbrella or light rain jacket.
- Winter (June–August) — highs 1864 to 20 °C69 °F, lows 745 to 8 °C47 °F, about 68 mm2.7 in of precipitation a month. Pack light layers — T-shirts plus a light sweater or jacket and an extra layer for the cooler mornings and evenings.
- Spring (September–November) — highs 2373 to 29 °C85 °F, lows 1050 to 15 °C60 °F, about 136 mm5.3 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses, an extra layer for the cooler mornings and evenings and an umbrella or light rain jacket.
How Uruguaiana compares
Compared with Concordia, about 203 km to the southwest, Uruguaiana is on average 0.9 °C1.6 °F warmer and receives a similar amount of precipitation. The difference is largest in June (1.3 °C2.3 °F warmer).
Of the 223 places in Brazil covered by World Climates, Uruguaiana is the 203rd warmest by annual mean temperature and the 74th wettest by annual precipitation. See all of them on the Brazil climate page.
Places in other countries with the most similar temperature and rainfall pattern: Concordia (Argentina, Cfa), Salto (Uruguay, Cfa) and Santa Fe (Argentina, Cfa).
Nearby places
- Salto 200 km · 19 °C66 °F · 1,414 mm56 in
- Concordia 203 km · 19 °C66 °F · 1,414 mm56 in
- Ituzaingó 244 km · 22 °C71 °F · 1,586 mm62 in
- Posadas 286 km · 21 °C71 °F · 1,771 mm70 in
- Corrientes 306 km · 22 °C71 °F · 1,384 mm55 in
- Santa Maria 317 km · 19 °C67 °F · 1,692 mm67 in
- Bagé 335 km · 17 °C63 °F · 1,481 mm58 in
- Santa Fe 405 km · 19 °C67 °F · 1,153 mm45 in
Frequently asked questions
What is the warmest month in Uruguaiana?
January is the warmest month in Uruguaiana, with an average high of 33 °C (92 °F) and an average low of 20 °C (68 °F).
What is the coldest month in Uruguaiana?
July is the coldest month, with an average high of 18 °C (64 °F) and an average low of 7 °C (45 °F).
When does it rain the most in Uruguaiana?
October is the wettest month with about 161 mm (6.3 in) of precipitation; July is the driest with about 63 mm (2.5 in).
What is the best time to visit Uruguaiana?
Judging by long-term averages, the most comfortable months are August and September.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.