It is located at a latitude of 30º02'21" S and a longitude of 52º53'38" W, at an approximate elevation of 68 meters above sea level.

Cachoeira do Sul has a humid subtropical climate 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).

Rainfall is distributed evenly throughout the year with a monthly average of 140 millimetres (5.5 in).

This geographical article relating to Rio Grande do Sul is a stub.