Climate averages 1991–2020
Santa Cruz do Sul weather
in September.
A mild, wet month: the 8th warmest and the 11th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a mild month in Santa Cruz do Sul: daytime highs average 21.5°C and nights cool to about 11.9°C. By daytime temperature it is the 8th warmest of the 12 months.
Expect about 161 mm of rain on roughly 12 days, which makes September a wet month (the 11th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 53 min on an average September day.
The nearest other city in this atlas is Lajeado (53 km away). In September its highs average 21.8°C, about as warm as Santa Cruz do Sul, with 161 mm of rain.
Among the 448 cities listed in Brazil, Santa Cruz do Sul ranks joint 413th of 448 for the warmest September highs and joint 433rd of 448 for the driest September (rainfall, lowest first). The mean September high of those 448 cities is 27.5°C; Santa Cruz do Sul is 6.0°C cooler than that mean.
From September to October, average highs rise by 2.2°C to 23.7°C, and monthly rainfall rises from 161 mm to 199 mm.
The annual picture
September 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
Santa Cruz do Sul climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 28.9°C19.7°C | 19.7°C | 155 | 14.9 | 13.814 h |
| February | 28.4°C19.7°C | 19.7°C | 141 | 14.1 | 13.113 h |
| March | 27.2°C18.3°C | 18.3°C | 120 | 12.5 | 12.312 h |
| April | 24.4°C15.4°C | 15.4°C | 127 | 10.0 | 11.411 h |
| May | 20.6°C12.1°C | 12.1°C | 123 | 9.7 | 10.611 h |
| June | 18.8°C10.1°C | 10.1°C | 131 | 10.0 | 10.310 h |
| July | 18.3°C9.0°C | 9.0°C | 154 | 10.6 | 10.410 h |
| August | 20.5°C10.3°C | 10.3°C | 125 | 10.3 | 11.111 h |
| September, selected | 21.5°C11.9°C | 11.9°C | 161 | 11.6 | 11.912 h |
| October | 23.7°C14.3°C | 14.3°C | 199 | 13.5 | 12.813 h |
| November | 25.9°C15.8°C | 15.8°C | 135 | 11.6 | 13.614 h |
| December | 28.3°C18.3°C | 18.3°C | 152 | 13.1 | 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
September in nearby cities
- Lajeado in SeptemberBrazil · 53 kmHigh 21.8°C · Low 12.0°C · 161 mm rain
- Cachoeira do Sul in SeptemberBrazil · 58 kmHigh 21.3°C · Low 12.0°C · 153 mm rain
- Bento Gonçalves in SeptemberBrazil · 107 kmHigh 19.9°C · Low 10.1°C · 172 mm rain
- Guaíba in SeptemberBrazil · 115 kmHigh 21.4°C · Low 12.8°C · 146 mm rain
- Farroupilha in SeptemberBrazil · 118 kmHigh 19.4°C · Low 9.8°C · 173 mm rain
- Porto Alegre in SeptemberBrazil · 120 kmHigh 21.6°C · Low 12.8°C · 146 mm rain
- Canoas in SeptemberBrazil · 122 kmHigh 21.7°C · Low 12.8°C · 146 mm rain
- São Leopoldo in SeptemberBrazil · 124 kmHigh 21.8°C · Low 12.6°C · 160 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 Santa Cruz do Sul) is explained once on the Santa Cruz do Sul year overview and on the Sources, method and limits page.