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São Carlos Weather by Month
Average temperatures, rainfall and humidity for São Carlos, Brazil, month by month, built from OpenWeather's historical records. Use it to see what a typical São Carlos month looks like before you travel — then check the live São Carlos forecast for the days ahead.
Warmest month
September
30°C average high
Coolest month
July
11°C average low
Wettest month
January
113 mm of rain
Driest month
August
12 mm of rain
Average temperature and rainfall in São Carlos 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 | 28°C | 19°C | 14°C / 37°C | 113 mm | 79% | 9 km/h |
| February | 29°C | 19°C | 14°C / 36°C | 102 mm | 80% | 9 km/h |
| March | 28°C | 18°C | 13°C / 35°C | 113 mm | 79% | 9 km/h |
| April | 27°C | 16°C | 7°C / 34°C | 43 mm | 74% | 9 km/h |
| May | 25°C | 13°C | 1°C / 32°C | 24 mm | 72% | 9 km/h |
| June | 25°C | 12°C | 0°C / 31°C | 21 mm | 70% | 9 km/h |
| July | 25°C | 11°C | 0°C / 32°C | 14 mm | 60% | 10 km/h |
| August | 27°C | 13°C | 2°C / 35°C | 12 mm | 57% | 11 km/h |
| September | 30°C | 15°C | 7°C / 39°C | 31 mm | 56% | 12 km/h |
| October | 30°C | 17°C | 10°C / 38°C | 53 mm | 67% | 12 km/h |
| November | 28°C | 18°C | 9°C / 39°C | 80 mm | 71% | 11 km/h |
| December | 28°C | 19°C | 12°C / 37°C | 105 mm | 75% | 10 km/h |
Best time to visit São Carlos
The most comfortable time to visit São Carlos is generally May to July, balancing mild daytime temperatures against the driest stretch of the year. Temperatures stay fairly even all year and rain concentrates around January, totalling about 713 mm a year.
Travellers who prefer heat should aim for September, when highs average 30°C. January is the month to avoid if rain would spoil your plans — it averages 113 mm, roughly 9× the rainfall of August.
Source: OpenWeather historical and statistical weather data. Values are long-term averages, not a forecast — see the São Carlos forecast for what is happening now.