Climate averages 1991–2020
Mairiporã weather
in December.
A warm, very wet month: the 3rd 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 Mairiporã: daytime highs average 26.6°C and nights cool to about 18.4°C. By daytime temperature it is the 3rd warmest of the 12 months.
Expect about 186 mm of rain on roughly 21 days, which makes December a very wet month (the 11th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 32 min on an average December day.
The nearest other city in this atlas is Caieiras (17 km away). In December its highs average 26.0°C, 0.5°C cooler than Mairiporã, with 210 mm of rain.
Among the 448 cities listed in Brazil, Mairiporã ranks joint 350th of 448 for the warmest December highs and joint 221st of 448 for the driest December (rainfall, lowest first). The mean December high of those 448 cities is 28.5°C; Mairiporã is 1.9°C cooler than that mean.
From December to January, average highs rise by 0.3°C to 26.8°C, and monthly rainfall rises from 186 mm to 235 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
Mairiporã climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 26.8°C19.1°C | 19.1°C | 235 | 22.7 | 13.413 h |
| February | 27.2°C19.2°C | 19.2°C | 180 | 19.3 | 12.913 h |
| March | 26.2°C18.5°C | 18.5°C | 147 | 18.5 | 12.212 h |
| April | 25.0°C16.9°C | 16.9°C | 63 | 9.8 | 11.612 h |
| May | 22.4°C14.2°C | 14.2°C | 62 | 7.1 | 11.011 h |
| June | 21.9°C12.9°C | 12.9°C | 44 | 5.1 | 10.711 h |
| July | 21.9°C12.2°C | 12.2°C | 47 | 4.7 | 10.811 h |
| August | 23.5°C13.0°C | 13.0°C | 36 | 4.6 | 11.311 h |
| September | 25.0°C14.9°C | 14.9°C | 83 | 9.1 | 11.912 h |
| October | 25.8°C16.5°C | 16.5°C | 118 | 14.0 | 12.613 h |
| November | 25.5°C17.0°C | 17.0°C | 155 | 16.1 | 13.213 h |
| December, selected | 26.6°C18.4°C | 18.4°C | 186 | 20.5 | 13.514 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
- Caieiras in DecemberBrazil · 17 kmHigh 26.0°C · Low 17.9°C · 210 mm rain
- Francisco Morato in DecemberBrazil · 17 kmHigh 26.1°C · Low 17.9°C · 210 mm rain
- Guarulhos in DecemberBrazil · 17 kmHigh 25.9°C · Low 18.0°C · 181 mm rain
- Atibaia in DecemberBrazil · 23 kmHigh 26.3°C · Low 18.0°C · 192 mm rain
- São Paulo in DecemberBrazil · 26 kmHigh 26.0°C · Low 18.2°C · 170 mm rain
- Várzea Paulista in DecemberBrazil · 27 kmHigh 26.6°C · Low 18.1°C · 210 mm rain
- Arujá in DecemberBrazil · 28 kmHigh 25.7°C · Low 17.7°C · 198 mm rain
- Itaquaquecetuba in DecemberBrazil · 31 kmHigh 26.0°C · Low 18.2°C · 198 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 Mairiporã) is explained once on the Mairiporã year overview and on the Sources, method and limits page.