Climate averages 1991–2020
São Roque weather
in December.
A warm, 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 São Roque: daytime highs average 26.3°C and nights cool to about 18.2°C. By daytime temperature it is the 3rd warmest of the 12 months.
Expect about 178 mm of rain on roughly 20 days, which makes December a wet month (the 11th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 33 min on an average December day.
The nearest other city in this atlas is Ibiúna (17 km away). In December its highs average 25.4°C, 0.9°C cooler than São Roque, with 207 mm of rain.
Among the 448 cities listed in Brazil, São Roque ranks joint 372nd of 448 for the warmest December highs and joint 198th of 448 for the driest December (rainfall, lowest first). The mean December high of those 448 cities is 28.5°C; São Roque is 2.2°C cooler than that mean.
From December to January, average highs rise by 0.2°C to 26.5°C, and monthly rainfall rises from 178 mm to 229 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 Roque climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 26.5°C19.0°C | 19.0°C | 229 | 22.2 | 13.413 h |
| February | 26.8°C19.1°C | 19.1°C | 162 | 19.0 | 12.913 h |
| March | 25.9°C18.3°C | 18.3°C | 125 | 17.9 | 12.212 h |
| April | 24.7°C16.7°C | 16.7°C | 60 | 8.5 | 11.612 h |
| May | 22.1°C14.0°C | 14.0°C | 59 | 6.9 | 11.011 h |
| June | 21.4°C12.9°C | 12.9°C | 48 | 5.2 | 10.711 h |
| July | 21.5°C12.2°C | 12.2°C | 45 | 4.9 | 10.811 h |
| August | 23.2°C12.9°C | 12.9°C | 37 | 4.7 | 11.311 h |
| September | 24.6°C14.6°C | 14.6°C | 82 | 8.9 | 11.912 h |
| October | 25.5°C16.1°C | 16.1°C | 108 | 13.0 | 12.613 h |
| November | 25.3°C16.7°C | 16.7°C | 141 | 15.6 | 13.213 h |
| December, selected | 26.3°C18.2°C | 18.2°C | 178 | 20.0 | 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
- Ibiúna in DecemberBrazil · 17 kmHigh 25.4°C · Low 17.7°C · 207 mm rain
- Santana de Parnaíba in DecemberBrazil · 24 kmHigh 26.5°C · Low 18.4°C · 181 mm rain
- Barueri in DecemberBrazil · 27 kmHigh 26.4°C · Low 18.3°C · 181 mm rain
- Votorantim in DecemberBrazil · 31 kmHigh 27.9°C · Low 19.2°C · 162 mm rain
- Embu das Artes in DecemberBrazil · 32 kmHigh 25.9°C · Low 18.1°C · 222 mm rain
- Sorocaba in DecemberBrazil · 33 kmHigh 27.5°C · Low 18.8°C · 162 mm rain
- Itu in DecemberBrazil · 34 kmHigh 27.6°C · Low 19.0°C · 184 mm rain
- Osasco in DecemberBrazil · 35 kmHigh 26.2°C · Low 18.1°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 São Roque) is explained once on the São Roque year overview and on the Sources, method and limits page.