Climate averages 1991–2020
Santa Rosa, Brazil weather
by month.
See how the year changes. January has the highest average daily maximum; August has the lowest average monthly rainfall.
Long-term climate patterns, not a forecast for a particular trip.
Across the year Santa Rosa, Brazil averages a daytime high of 25.1°C and a nighttime low of 16.2°C, with about 1,770 mm of rain on roughly 134 days. January is the warmest month (average high 29.9°C) and July the coolest (19.2°C). October is the wettest month with 214 mm; August is the driest with 94 mm.
The annual picture
A year in Santa Rosa
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 | 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
Nearby cities
- Santo ÂngeloBrazil · 52 kmHigh 24.6°C · Low 15.4°C · 1,918 mm rain a year
- IjuíBrazil · 80 kmHigh 24.3°C · Low 15.2°C · 1,899 mm rain a year
- EncarnaciónParaguay · 149 kmHigh 26.0°C · Low 17.5°C · 1,796 mm rain a year
- PosadasArgentina · 152 kmHigh 25.9°C · Low 17.6°C · 1,695 mm rain a year
- ChapecóBrazil · 203 kmHigh 23.5°C · Low 14.0°C · 2,025 mm rain a year
- Passo FundoBrazil · 208 kmHigh 22.2°C · Low 13.4°C · 1,985 mm rain a year
- Santa MariaBrazil · 212 kmHigh 23.7°C · Low 14.2°C · 1,768 mm rain a year
- ErechimBrazil · 219 kmHigh 22.4°C · Low 13.0°C · 2,069 mm rain a year
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 limitsWhat do the high and low temperatures mean?
We average the daily maximum and daily minimum for each calendar month over 1991–2020. They are not record extremes, a forecast range or temperatures at a fixed time of day.
How is a rain day counted?
A local calendar day (standard time, UTC-3, no daylight saving) with at least 1 mm of total precipitation counts as one rain day. We count these for each year and month, then average across 30 years. The average does not predict which days will be wet.
Where do the numbers come from?
ERA5-Land (temperature) and ERA5 (precipitation) reanalysis from the Copernicus Climate Change Service, read from the Open-Meteo open-data archive. Temperature comes from the 0.1° model cell at -27.90°, -54.50° (4 km from the city centre), adjusted up by 0.1°C for the difference between the city's elevation (284 m) and the cell's (293 m). Rain comes from the 0.25° cell at -27.75°, -54.50°. These are model estimates, not weather-station readings; coast, hills and city streets can differ.
Does this page show sunshine, humidity or sea temperature?
No. The data used here contain air temperature and precipitation only. Daylight hours are calculated from the city's latitude (sunrise to sunset), not measured sunshine.