Climate averages 1991–2020
São Carlos weather
in September.
A warm, moderately wet month: the 2nd warmest and the 6th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a warm month in São Carlos: daytime highs average 27.5°C and nights cool to about 15.8°C. By daytime temperature it is the 2nd warmest of the 12 months.
Expect about 65 mm of rain on roughly 8 days, which makes September a moderately wet month (the 6th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 57 min on an average September day.
The nearest other city in this atlas is Araraquara (38 km away). In September its highs average 28.6°C, 1.1°C warmer than São Carlos, with 67 mm of rain.
Among the 448 cities listed in Brazil, São Carlos ranks joint 212th of 448 for the warmest September highs and joint 232nd of 448 for the driest September (rainfall, lowest first). The mean September high of those 448 cities is 27.5°C; São Carlos is level with that mean.
From September to October, average highs rise by 0.3°C to 27.8°C, and monthly rainfall rises from 65 mm to 114 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
São Carlos climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 26.8°C19.2°C | 19.2°C | 260 | 23.1 | 13.313 h |
| February | 27.1°C19.2°C | 19.2°C | 180 | 19.3 | 12.813 h |
| March | 26.5°C18.5°C | 18.5°C | 152 | 19.1 | 12.212 h |
| April | 25.7°C16.8°C | 16.8°C | 63 | 9.2 | 11.612 h |
| May | 23.4°C13.9°C | 13.9°C | 54 | 6.2 | 11.111 h |
| June | 23.0°C12.7°C | 12.7°C | 35 | 3.5 | 10.811 h |
| July | 23.4°C12.3°C | 12.3°C | 25 | 3.3 | 10.911 h |
| August | 25.6°C13.4°C | 13.4°C | 26 | 3.4 | 11.411 h |
| September, selected | 27.5°C15.8°C | 15.8°C | 65 | 8.2 | 12.012 h |
| October | 27.8°C17.4°C | 17.4°C | 114 | 13.1 | 12.613 h |
| November | 26.8°C17.8°C | 17.8°C | 165 | 17.0 | 13.113 h |
| December | 26.9°C18.8°C | 18.8°C | 213 | 22.8 | 13.413 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
- Araraquara in SeptemberBrazil · 38 kmHigh 28.6°C · Low 17.3°C · 67 mm rain
- Pirassununga in SeptemberBrazil · 48 kmHigh 28.6°C · Low 16.6°C · 65 mm rain
- Leme in SeptemberBrazil · 55 kmHigh 28.4°C · Low 16.3°C · 71 mm rain
- Rio Claro in SeptemberBrazil · 55 kmHigh 27.9°C · Low 15.7°C · 72 mm rain
- Araras in SeptemberBrazil · 64 kmHigh 27.9°C · Low 16.2°C · 71 mm rain
- Matão in SeptemberBrazil · 67 kmHigh 29.6°C · Low 18.2°C · 71 mm rain
- Jaú in SeptemberBrazil · 75 kmHigh 28.8°C · Low 17.1°C · 64 mm rain
- Limeira in SeptemberBrazil · 79 kmHigh 28.2°C · Low 16.2°C · 72 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 São Carlos) is explained once on the São Carlos year overview and on the Sources, method and limits page.