Climate averages 1991–2020
Rivera weather
in August.
A mild, wet month: the 10th warmest and the driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
August is a mild month in Rivera: daytime highs average 18.8°C and nights cool to about 9.4°C. By daytime temperature it is the 10th warmest of the 12 months.
Expect about 105 mm of rain on roughly 8 days, which makes August a wet month (the driest month of the year). Daylight, from sunrise to sunset, lasts about 11 h 00 min on an average August day.
The nearest other city in this atlas is Sant'Ana do Livramento (2 km away). In August its highs average 18.6°C, about as warm as Rivera, with 105 mm of rain.
Among the 4 cities listed in Uruguay, Rivera ranks 1st of 4 for the warmest August highs and 4th of 4 for the driest August (rainfall, lowest first). The mean August high of those 4 cities is 16.5°C; Rivera is 2.3°C warmer than that mean.
From August to September, average highs rise by 1.2°C to 20.0°C, and monthly rainfall rises from 105 mm to 131 mm.
The annual picture
August in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Rivera climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 29.1°C19.4°C | 19.4°C | 133 | 10.7 | 13.914 h |
| February | 28.1°C19.1°C | 19.1°C | 129 | 10.5 | 13.213 h |
| March | 26.6°C17.5°C | 17.5°C | 107 | 9.4 | 12.312 h |
| April | 23.2°C14.7°C | 14.7°C | 143 | 9.0 | 11.411 h |
| May | 19.3°C11.5°C | 11.5°C | 110 | 8.3 | 10.611 h |
| June | 17.1°C9.3°C | 9.3°C | 124 | 8.7 | 10.210 h |
| July | 16.5°C8.3°C | 8.3°C | 108 | 8.1 | 10.310 h |
| August, selected | 18.8°C9.4°C | 9.4°C | 105 | 8.2 | 11.011 h |
| September | 20.0°C10.7°C | 10.7°C | 131 | 9.4 | 11.912 h |
| October | 22.6°C13.3°C | 13.3°C | 161 | 10.9 | 12.813 h |
| November | 25.4°C15.1°C | 15.1°C | 117 | 8.3 | 13.714 h |
| December | 28.2°C17.9°C | 17.9°C | 117 | 9.8 | 14.114 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
August in nearby cities
- Sant'Ana do Livramento in AugustBrazil · 2 kmHigh 18.6°C · Low 8.9°C · 105 mm rain
- Alegrete in AugustBrazil · 127 kmHigh 20.4°C · Low 10.6°C · 109 mm rain
- Bagé in AugustBrazil · 145 kmHigh 18.5°C · Low 9.3°C · 113 mm rain
- Uruguaiana in AugustBrazil · 195 kmHigh 20.4°C · Low 11.1°C · 89 mm rain
- Santa Maria in AugustBrazil · 216 kmHigh 20.2°C · Low 9.8°C · 122 mm rain
- Concordia in AugustArgentina · 241 kmHigh 19.1°C · Low 9.6°C · 91 mm rain
- Cachoeira do Sul in AugustBrazil · 272 kmHigh 20.2°C · Low 10.3°C · 121 mm rain
- Paysandú in AugustUruguay · 286 kmHigh 18.4°C · Low 8.6°C · 89 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Rivera) is explained once on the Rivera year overview and on the Sources, method and limits page.
Sant'Ana do Livramento lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.