Climate averages 1991–2020
São José dos Campos weather
in December.
A warm, wet month: the 3rd warmest and the 10th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a warm month in São José dos Campos: daytime highs average 27.2°C and nights cool to about 18.7°C. By daytime temperature it is the 3rd warmest of the 12 months.
Expect about 172 mm of rain on roughly 20 days, which makes December a wet month (the 10th 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 Jacareí (16 km away). In December its highs average 27.0°C, about as warm as São José dos Campos, with 172 mm of rain.
Among the 448 cities listed in Brazil, São José dos Campos ranks joint 307th of 448 for the warmest December highs and joint 181st of 448 for the driest December (rainfall, lowest first). The mean December high of those 448 cities is 28.5°C; São José dos Campos is 1.3°C cooler than that mean.
From December to January, average highs rise by 0.3°C to 27.5°C, and monthly rainfall rises from 172 mm to 226 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 José dos Campos climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 27.5°C19.5°C | 19.5°C | 226 | 21.9 | 13.413 h |
| February | 27.9°C19.6°C | 19.6°C | 173 | 18.6 | 12.913 h |
| March | 26.8°C18.8°C | 18.8°C | 139 | 18.0 | 12.212 h |
| April | 25.6°C17.2°C | 17.2°C | 57 | 9.5 | 11.612 h |
| May | 23.2°C14.3°C | 14.3°C | 57 | 7.6 | 11.011 h |
| June | 22.7°C12.7°C | 12.7°C | 38 | 5.1 | 10.711 h |
| July | 22.6°C12.0°C | 12.0°C | 44 | 5.1 | 10.911 h |
| August | 24.1°C12.9°C | 12.9°C | 35 | 5.3 | 11.311 h |
| September | 25.5°C15.0°C | 15.0°C | 77 | 9.9 | 11.912 h |
| October | 26.4°C16.7°C | 16.7°C | 109 | 13.5 | 12.613 h |
| November | 26.1°C17.4°C | 17.4°C | 142 | 16.6 | 13.213 h |
| December, selected | 27.2°C18.7°C | 18.7°C | 172 | 20.1 | 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
- Jacareí in DecemberBrazil · 16 kmHigh 27.0°C · Low 18.7°C · 172 mm rain
- Caçapava in DecemberBrazil · 20 kmHigh 27.2°C · Low 18.7°C · 227 mm rain
- Taubaté in DecemberBrazil · 38 kmHigh 27.1°C · Low 18.4°C · 219 mm rain
- Mogi das Cruzes in DecemberBrazil · 49 kmHigh 25.8°C · Low 18.0°C · 198 mm rain
- Arujá in DecemberBrazil · 50 kmHigh 25.7°C · Low 17.7°C · 198 mm rain
- Pindamonhangaba in DecemberBrazil · 52 kmHigh 27.6°C · Low 18.8°C · 219 mm rain
- Itaquaquecetuba in DecemberBrazil · 58 kmHigh 26.0°C · Low 18.2°C · 198 mm rain
- Ferraz de Vasconcelos in DecemberBrazil · 64 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 São José dos Campos) is explained once on the São José dos Campos year overview and on the Sources, method and limits page.
Jacareí lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.