Climate averages 1991–2020
Cachoeira do Sul weather
in December.
A hot, wet month: the 3rd warmest and the 7th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a hot month in Cachoeira do Sul: daytime highs average 28.7°C and nights cool to about 18.7°C. By daytime temperature it is the 3rd warmest of the 12 months.
Expect about 132 mm of rain on roughly 11 days, which makes December a wet month (the 7th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 14 h 02 min on an average December day.
The nearest other city in this atlas is Santa Cruz do Sul (58 km away). In December its highs average 28.3°C, about as warm as Cachoeira do Sul, with 152 mm of rain.
Among the 448 cities listed in Brazil, Cachoeira do Sul ranks joint 199th of 448 for the warmest December highs and 121st of 448 for the driest December (rainfall, lowest first). The mean December high of those 448 cities is 28.5°C; Cachoeira do Sul is 0.2°C warmer than that mean.
From December to January, average highs rise by 0.6°C to 29.3°C, and monthly rainfall rises from 132 mm to 133 mm.
The annual picture
December 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
Cachoeira do Sul climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 29.3°C20.1°C | 20.1°C | 133 | 13.0 | 13.814 h |
| February | 28.9°C20.1°C | 20.1°C | 118 | 11.9 | 13.213 h |
| March | 27.5°C18.7°C | 18.7°C | 108 | 10.3 | 12.312 h |
| April | 24.5°C15.7°C | 15.7°C | 125 | 9.4 | 11.411 h |
| May | 20.6°C12.3°C | 12.3°C | 120 | 9.0 | 10.611 h |
| June | 18.5°C10.1°C | 10.1°C | 133 | 9.7 | 10.210 h |
| July | 17.9°C9.0°C | 9.0°C | 146 | 10.5 | 10.410 h |
| August | 20.2°C10.3°C | 10.3°C | 121 | 10.0 | 11.011 h |
| September | 21.3°C12.0°C | 12.0°C | 153 | 10.8 | 11.912 h |
| October | 23.7°C14.5°C | 14.5°C | 190 | 12.0 | 12.813 h |
| November | 26.1°C16.1°C | 16.1°C | 126 | 10.0 | 13.614 h |
| December, selected | 28.7°C18.7°C | 18.7°C | 132 | 11.2 | 14.014 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
December in nearby cities
- Santa Cruz do Sul in DecemberBrazil · 58 kmHigh 28.3°C · Low 18.3°C · 152 mm rain
- Santa Maria in DecemberBrazil · 96 kmHigh 28.6°C · Low 18.2°C · 158 mm rain
- Lajeado in DecemberBrazil · 110 kmHigh 28.3°C · Low 18.3°C · 166 mm rain
- Guaíba in DecemberBrazil · 151 kmHigh 28.4°C · Low 19.3°C · 124 mm rain
- Porto Alegre in DecemberBrazil · 160 kmHigh 28.4°C · Low 19.2°C · 124 mm rain
- Bento Gonçalves in DecemberBrazil · 164 kmHigh 25.6°C · Low 15.8°C · 189 mm rain
- Canoas in DecemberBrazil · 165 kmHigh 28.4°C · Low 19.1°C · 124 mm rain
- São Leopoldo in DecemberBrazil · 171 kmHigh 28.2°C · Low 18.8°C · 145 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 Cachoeira do Sul) is explained once on the Cachoeira do Sul year overview and on the Sources, method and limits page.