Climate averages 1991–2020
São Carlos weather
in December.
A warm, very wet month: the 4th warmest and the 11th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a warm month in São Carlos: daytime highs average 26.9°C and nights cool to about 18.8°C. By daytime temperature it is the 4th warmest of the 12 months.
Expect about 213 mm of rain on roughly 23 days, which makes December a very wet month (the 11th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 27 min on an average December day.
The nearest other city in this atlas is Araraquara (38 km away). In December its highs average 27.9°C, 1.0°C warmer than São Carlos, with 214 mm of rain.
Among the 448 cities listed in Brazil, São Carlos ranks joint 327th of 448 for the warmest December highs and joint 282nd of 448 for the driest December (rainfall, lowest first). The mean December high of those 448 cities is 28.5°C; São Carlos is 1.6°C cooler than that mean.
From December to January, average highs stay level at 26.8°C, and monthly rainfall rises from 213 mm to 260 mm.
The annual picture
December 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 | 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, selected | 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
December in nearby cities
- Araraquara in DecemberBrazil · 38 kmHigh 27.9°C · Low 19.8°C · 214 mm rain
- Pirassununga in DecemberBrazil · 48 kmHigh 28.2°C · Low 19.7°C · 215 mm rain
- Leme in DecemberBrazil · 55 kmHigh 28.2°C · Low 19.7°C · 235 mm rain
- Rio Claro in DecemberBrazil · 55 kmHigh 28.0°C · Low 19.4°C · 229 mm rain
- Araras in DecemberBrazil · 64 kmHigh 28.1°C · Low 19.6°C · 235 mm rain
- Matão in DecemberBrazil · 67 kmHigh 28.6°C · Low 20.7°C · 237 mm rain
- Jaú in DecemberBrazil · 75 kmHigh 29.0°C · Low 20.5°C · 191 mm rain
- Limeira in DecemberBrazil · 79 kmHigh 28.5°C · Low 19.7°C · 229 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.