Climate averages 1991–2020
Santa Maria 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 Maria averages a daytime high of 23.7°C and a nighttime low of 14.2°C, with about 1,768 mm of rain on roughly 133 days. January is the warmest month (average high 29.1°C) and July the coolest (17.8°C). October is the wettest month with 208 mm; August is the driest with 122 mm.
The annual picture
A year in Santa Maria
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 Maria climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 29.1°C19.5°C | 19.5°C | 159 | 13.8 | 13.814 h |
| February | 28.4°C19.4°C | 19.4°C | 146 | 12.6 | 13.113 h |
| March | 27.1°C17.9°C | 17.9°C | 124 | 11.2 | 12.312 h |
| April | 24.1°C14.9°C | 14.9°C | 144 | 10.1 | 11.411 h |
| May | 20.3°C11.6°C | 11.6°C | 127 | 9.5 | 10.711 h |
| June | 18.4°C9.7°C | 9.7°C | 137 | 10.1 | 10.310 h |
| July | 17.8°C8.5°C | 8.5°C | 149 | 10.2 | 10.410 h |
| August | 20.2°C9.8°C | 9.8°C | 122 | 9.8 | 11.111 h |
| September | 21.2°C11.4°C | 11.4°C | 157 | 10.6 | 11.912 h |
| October | 23.6°C13.9°C | 13.9°C | 208 | 12.6 | 12.813 h |
| November | 26.0°C15.5°C | 15.5°C | 136 | 10.2 | 13.614 h |
| December | 28.6°C18.2°C | 18.2°C | 158 | 11.8 | 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
Nearby cities
- Cachoeira do SulBrazil · 96 kmHigh 23.9°C · Low 14.8°C · 1,603 mm rain a year
- Santa Cruz do SulBrazil · 133 kmHigh 23.9°C · Low 14.6°C · 1,723 mm rain a year
- IjuíBrazil · 145 kmHigh 24.3°C · Low 15.2°C · 1,899 mm rain a year
- Santo ÂngeloBrazil · 160 kmHigh 24.6°C · Low 15.4°C · 1,918 mm rain a year
- LajeadoBrazil · 180 kmHigh 24.1°C · Low 14.7°C · 1,812 mm rain a year
- BagéBrazil · 185 kmHigh 22.5°C · Low 13.5°C · 1,464 mm rain a year
- AlegreteBrazil · 192 kmHigh 24.3°C · Low 15.1°C · 1,695 mm rain a year
- Passo FundoBrazil · 209 kmHigh 22.2°C · Low 13.4°C · 1,985 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 -29.70°, -53.80° (2 km from the city centre), adjusted down by 0.2°C for the difference between the city's elevation (146 m) and the cell's (120 m). Rain comes from the 0.25° cell at -29.75°, -53.75°. 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.