Climate Overview
The climate in Cachoeira do Sul is temperate. The average annual temperature is 11°C and approximately 287mm of precipitation falls per year. December is the wettest month, receiving around 33mm of rainfall. Cachoeira do Sul is in the Southern Hemisphere. The seasons are reversed: summer runs from December to February, while winter falls between June and August. The summer months are: April, May, June. The coldest months are December, January, November, when temperatures can drop to 7°C.
Temperature
Cachoeira do Sul has relatively stable temperatures year-round, staying within a 10°C range. April is the warmest month, though highs remain moderate at 17°C with a mean of 15°C. December is the coolest month, with minimum temperatures around 7°C and an average of 8°C. Daily temperature variation is modest, with an average difference of 2°C between highs and lows. The sharpest temperature change occurs between February and March, with a 4°C shift in average temperatures.
Precipitation
Cachoeira do Sul is a quite dry location, receiving approximately 287mm of precipitation annually, which averages out to around 24mm per month. The wettest month is January, averaging 33mm of rainfall. March and April also tend to see above-average precipitation. The driest month is May, with just 8mm. That's 24mm less than January, the wettest month. Precipitation varies noticeably between seasons, with the second half (July to December) of the year generally seeing more rainfall.
Wind
Cachoeira do Sul is relatively calm, with an average annual wind speed of 11km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is November, averaging 18km/h, though still comfortable for most outdoor activities. The calmest conditions occur in February, with average winds dropping to 6km/h, making it an ideal period for wind-sensitive activities. Wind speeds vary significantly across the year, with a 12km/h difference between the calmest and windiest months. This level of variation is worth factoring into travel plans.
Seasons
16 days until Spring
It is currently winter in Cachoeira do Sul, which began on June 21, 2026. Cachoeira do Sul is in the Southern Hemisphere, where the seasons are reversed: spring starts in September, summer in December, autumn in March, and winter in June. The warmest period peaks in April at around 17°C, while the coldest stretch bottoms out in December near 7°C. Spring is next, beginning on September 23, 2026 (16 days from now).
Spring
Temperatures range from 7 to 13°C. Rainfall is relatively light, with around 84mm over the season and a monthly average of 28mm. Winds are moderate at around 15km/h. Light layers work well as temperatures warm through the season. It is a great time to be outdoors.
Summer
Temperatures range from 7 to 11°C. Rainfall is relatively light, with around 76mm over the season and a monthly average of 25mm. Winds are generally light, averaging 11km/h. Comfortable clothing with a light layer for cooler evenings is all you need.
Autumn
Temperatures range from 12 to 17°C. Rainfall is relatively light, with around 74mm over the season and a monthly average of 25mm. Winds are generally light, averaging 9km/h. Layered clothing works best as temperatures gradually cool. Enjoy the crisp air and changing scenery.
Winter
Temperatures range from 12 to 15°C. Rainfall is relatively light, with around 52mm over the season and a monthly average of 17mm. Winds are generally light, averaging 10km/h. A light jacket or sweater is usually sufficient, though cooler evenings may call for an extra layer.
Best Time to Visit
The best time to visit Cachoeira do Sul is during April and May, when the weather is most comfortable for travellers. During these months, average temperatures hover around 16°C with modest rainfall averaging 21mm per month. By contrast, December can be quite cold with temperatures dropping to 7°C. With minimal rainfall expected, you can pack light and plan outdoor activities with confidence.
Monthly Climate Data
The table below shows monthly climate averages for Cachoeira do Sul based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.
