Climate averages 1991–2020
Ribeirão Preto weather
in December.
A hot, very wet month: the joint 5th warmest and the 11th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a hot month in Ribeirão Preto: daytime highs average 28.9°C and nights cool to about 20.8°C. By daytime temperature it is the joint 5th warmest of the 12 months.
Expect about 221 mm of rain on roughly 22 days, which makes December a very wet month (the 11th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 23 min on an average December day.
The nearest other city in this atlas is Sertãozinho (19 km away). In December its highs average 29.0°C, about as warm as Ribeirão Preto, with 195 mm of rain.
Among the 448 cities listed in Brazil, Ribeirão Preto ranks joint 179th of 448 for the warmest December highs and joint 302nd of 448 for the driest December (rainfall, lowest first). The mean December high of those 448 cities is 28.5°C; Ribeirão Preto is 0.5°C warmer than that mean.
From December to January, average highs fall by 0.1°C to 28.9°C, and monthly rainfall rises from 221 mm to 254 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
Ribeirão Preto climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 28.9°C20.9°C | 20.9°C | 254 | 23.1 | 13.313 h |
| February | 29.1°C20.8°C | 20.8°C | 177 | 18.5 | 12.813 h |
| March | 28.6°C20.2°C | 20.2°C | 158 | 18.5 | 12.212 h |
| April | 28.0°C18.6°C | 18.6°C | 65 | 9.1 | 11.612 h |
| May | 26.0°C15.8°C | 15.8°C | 45 | 5.6 | 11.111 h |
| June | 25.7°C14.4°C | 14.4°C | 27 | 2.9 | 10.911 h |
| July | 26.2°C14.3°C | 14.3°C | 19 | 2.3 | 11.011 h |
| August | 28.6°C15.9°C | 15.9°C | 19 | 2.8 | 11.411 h |
| September | 30.4°C18.6°C | 18.6°C | 67 | 6.8 | 12.012 h |
| October | 30.5°C20.0°C | 20.0°C | 113 | 12.9 | 12.613 h |
| November | 29.2°C20.1°C | 20.1°C | 168 | 17.4 | 13.113 h |
| December, selected | 28.9°C20.8°C | 20.8°C | 221 | 22.3 | 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
- Sertãozinho in DecemberBrazil · 19 kmHigh 29.0°C · Low 20.8°C · 195 mm rain
- Jaboticabal in DecemberBrazil · 54 kmHigh 28.4°C · Low 20.5°C · 228 mm rain
- Bebedouro in DecemberBrazil · 74 kmHigh 28.8°C · Low 21.0°C · 219 mm rain
- Matão in DecemberBrazil · 75 kmHigh 28.6°C · Low 20.7°C · 237 mm rain
- Araraquara in DecemberBrazil · 78 kmHigh 27.9°C · Low 19.8°C · 214 mm rain
- Franca in DecemberBrazil · 83 kmHigh 26.4°C · Low 18.6°C · 265 mm rain
- São Sebastião do Paraíso in DecemberBrazil · 90 kmHigh 26.2°C · Low 18.6°C · 295 mm rain
- São Carlos in DecemberBrazil · 94 kmHigh 26.9°C · Low 18.8°C · 213 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 Ribeirão Preto) is explained once on the Ribeirão Preto year overview and on the Sources, method and limits page.