It is located at alatitude of 30º02'21" S and alongitude of 52º53'38" W, at an approximate elevation of 68 meters above sea level. Its population in 2020 was approximately 81,869 and its area is 3715.5 square kilometers.
Cachoeira do Sul has ahumid subtropicalclimate and its annual average temperature is 18.9 °C (66.0 °F). In January, the warmest month, highs frequently surpass 30 °C (86 °F) with the average low dropping to 19 °C (66 °F). In June, the coldest month, highs reach 19 °C (66 °F) and lows usually go below 9 °C (48 °F), reaching up to −5 °C (23 °F), but snow is a rare occurrence. Rainfall is distributed evenly throughout the year with a monthly average of 140 millimetres (5.5 in).
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