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Santa Maria Weather by Month
Average temperatures, rainfall and humidity for Santa Maria, Brazil, month by month, built from OpenWeather’s historical records. Use it to see what a typical Santa Maria month looks like before you travel — then check the live Santa Maria forecast for the days ahead.
Warmest month
February
31°C average high
Coolest month
July
9°C average low
Wettest month
December
77 mm of rain
Driest month
February
43 mm of rain
Average temperature and rainfall in Santa Maria by month
Averages of the daily highs and lows recorded in each month, with total rainfall, mean humidity and mean wind speed.
| Month | Avg high | Avg low | Record low / high | Rainfall | Humidity | Wind |
|---|---|---|---|---|---|---|
| January | 31°C | 19°C | 11°C / 43°C | 60 mm | 71% | 11 km/h |
| February | 31°C | 19°C | 8°C / 42°C | 43 mm | 72% | 10 km/h |
| March | 29°C | 17°C | 6°C / 40°C | 63 mm | 76% | 10 km/h |
| April | 26°C | 15°C | 0°C / 35°C | 60 mm | 78% | 9 km/h |
| May | 21°C | 12°C | -1°C / 33°C | 74 mm | 84% | 9 km/h |
| June | 19°C | 10°C | -5°C / 31°C | 58 mm | 83% | 10 km/h |
| July | 19°C | 9°C | -5°C / 37°C | 46 mm | 82% | 10 km/h |
| August | 21°C | 10°C | -3°C / 34°C | 54 mm | 79% | 11 km/h |
| September | 23°C | 12°C | -3°C / 36°C | 60 mm | 81% | 12 km/h |
| October | 25°C | 14°C | 3°C / 38°C | 76 mm | 78% | 12 km/h |
| November | 28°C | 16°C | 5°C / 38°C | 56 mm | 71% | 12 km/h |
| December | 30°C | 18°C | 7°C / 40°C | 77 mm | 70% | 12 km/h |
Best time to visit Santa Maria
The most comfortable time to visit Santa Maria is generally April and September to October, balancing mild daytime temperatures against the driest stretch of the year. The city has a moderate seasonal swing and rain concentrates around December, totalling about 726 mm a year.
Travellers who prefer heat should aim for February, when highs average 31°C. December is the month to avoid if rain would spoil your plans — it averages 77 mm, roughly 2× the rainfall of the driest month (February).
Source: OpenWeather historical and statistical weather data. Values are long-term averages, not a forecast — see the Santa Maria forecast for what is happening now.