Climate averages 1991–2020
Santa Rosa, Brazil weather
in September.
A warm, wet month: the 8th warmest and the joint 7th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a warm month in Santa Rosa, Brazil: daytime highs average 23.4°C and nights cool to about 13.8°C. By daytime temperature it is the 8th warmest of the 12 months.
Expect about 152 mm of rain on roughly 10 days, which makes September a wet month (the joint 7th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 54 min on an average September day.
The nearest other city in this atlas is Santo Ângelo (52 km away). In September its highs average 22.8°C, 0.6°C cooler than Santa Rosa, Brazil, with 159 mm of rain.
Among the 448 cities listed in Brazil, Santa Rosa, Brazil ranks joint 376th of 448 for the warmest September highs and joint 415th of 448 for the driest September (rainfall, lowest first). The mean September high of those 448 cities is 27.5°C; Santa Rosa, Brazil is 4.2°C cooler than that mean.
From September to October, average highs rise by 2.3°C to 25.7°C, and monthly rainfall rises from 152 mm to 214 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 Rosa, Brazil climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 29.9°C21.2°C | 21.2°C | 143 | 14.3 | 13.714 h |
| February | 29.0°C20.7°C | 20.7°C | 137 | 14.1 | 13.113 h |
| March | 28.1°C19.5°C | 19.5°C | 127 | 11.7 | 12.312 h |
| April | 25.4°C16.8°C | 16.8°C | 155 | 9.6 | 11.411 h |
| May | 21.5°C13.4°C | 13.4°C | 152 | 9.3 | 10.811 h |
| June | 19.8°C11.9°C | 11.9°C | 143 | 9.4 | 10.410 h |
| July | 19.2°C10.7°C | 10.7°C | 137 | 9.4 | 10.611 h |
| August | 21.7°C12.2°C | 12.2°C | 94 | 8.5 | 11.111 h |
| September, selected | 23.4°C13.8°C | 13.8°C | 152 | 10.3 | 11.912 h |
| October | 25.7°C16.4°C | 16.4°C | 214 | 12.9 | 12.713 h |
| November | 27.5°C17.7°C | 17.7°C | 156 | 11.0 | 13.513 h |
| December | 29.5°C20.1°C | 20.1°C | 160 | 13.1 | 13.914 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
- Santo Ângelo in SeptemberBrazil · 52 kmHigh 22.8°C · Low 12.9°C · 159 mm rain
- Ijuí in SeptemberBrazil · 80 kmHigh 22.5°C · Low 12.8°C · 157 mm rain
- Encarnación in SeptemberParaguay · 149 kmHigh 24.5°C · Low 15.0°C · 151 mm rain
- Posadas in SeptemberArgentina · 152 kmHigh 24.3°C · Low 15.0°C · 147 mm rain
- Chapecó in SeptemberBrazil · 203 kmHigh 22.6°C · Low 12.1°C · 191 mm rain
- Passo Fundo in SeptemberBrazil · 208 kmHigh 20.6°C · Low 11.1°C · 165 mm rain
- Santa Maria in SeptemberBrazil · 212 kmHigh 21.2°C · Low 11.4°C · 157 mm rain
- Erechim in SeptemberBrazil · 219 kmHigh 21.2°C · Low 10.8°C · 185 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 Rosa) is explained once on the Santa Rosa, Brazil year overview and on the Sources, method and limits page.