Climate averages 1991–2020
Ribeirão Pires weather
in December.
A warm, very wet month: the 3rd warmest and the 9th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a warm month in Ribeirão Pires: daytime highs average 25.7°C and nights cool to about 18.7°C. By daytime temperature it is the 3rd warmest of the 12 months.
Expect about 250 mm of rain on roughly 24 days, which makes December a very wet month (the 9th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 34 min on an average December day.
The nearest other city in this atlas is Santo André (14 km away). In December its highs average 25.5°C, about as warm as Ribeirão Pires, with 250 mm of rain.
Among the 448 cities listed in Brazil, Ribeirão Pires ranks joint 410th of 448 for the warmest December highs and joint 391st of 448 for the driest December (rainfall, lowest first). The mean December high of those 448 cities is 28.5°C; Ribeirão Pires is 2.8°C cooler than that mean.
From December to January, average highs rise by 0.6°C to 26.3°C, and monthly rainfall rises from 250 mm to 337 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 Pires climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 26.3°C19.6°C | 19.6°C | 337 | 26.7 | 13.413 h |
| February | 26.7°C19.7°C | 19.7°C | 278 | 23.3 | 12.913 h |
| March | 25.5°C18.9°C | 18.9°C | 270 | 24.6 | 12.212 h |
| April | 24.3°C17.3°C | 17.3°C | 114 | 15.9 | 11.612 h |
| May | 21.9°C14.6°C | 14.6°C | 96 | 12.1 | 11.011 h |
| June | 21.5°C13.4°C | 13.4°C | 70 | 8.4 | 10.711 h |
| July | 21.2°C12.7°C | 12.7°C | 84 | 8.3 | 10.811 h |
| August | 22.2°C13.2°C | 13.2°C | 68 | 8.7 | 11.311 h |
| September | 23.2°C14.8°C | 14.8°C | 129 | 14.1 | 11.912 h |
| October | 24.2°C16.3°C | 16.3°C | 157 | 17.8 | 12.613 h |
| November | 24.2°C17.0°C | 17.0°C | 209 | 20.8 | 13.213 h |
| December, selected | 25.7°C18.7°C | 18.7°C | 250 | 23.8 | 13.614 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
- Santo André in DecemberBrazil · 14 kmHigh 25.5°C · Low 18.3°C · 250 mm rain
- São Bernardo do Campo in DecemberBrazil · 16 kmHigh 25.4°C · Low 18.2°C · 250 mm rain
- São Caetano do Sul in DecemberBrazil · 17 kmHigh 25.8°C · Low 18.3°C · 181 mm rain
- Ferraz de Vasconcelos in DecemberBrazil · 19 kmHigh 26.0°C · Low 18.2°C · 198 mm rain
- Itaquaquecetuba in DecemberBrazil · 26 kmHigh 26.0°C · Low 18.2°C · 198 mm rain
- São Vicente in DecemberBrazil · 28 kmHigh 27.9°C · Low 22.2°C · 234 mm rain
- Santos in DecemberBrazil · 29 kmHigh 27.4°C · Low 22.2°C · 179 mm rain
- São Paulo in DecemberBrazil · 29 kmHigh 26.0°C · Low 18.2°C · 170 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 Pires) is explained once on the Ribeirão Pires year overview and on the Sources, method and limits page.
São Bernardo do Campo and Santo André lie in the same rainfall cell, so their rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.