Climate averages 1991–2020
Jundiaí 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 Jundiaí: daytime highs average 26.7°C and nights cool to about 18.3°C. By daytime temperature it is the 3rd warmest of the 12 months.
Expect about 189 mm of rain on roughly 20 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 Várzea Paulista (6 km away). In December its highs average 26.6°C, about as warm as Jundiaí, with 210 mm of rain.
Among the 448 cities listed in Brazil, Jundiaí ranks joint 344th of 448 for the warmest December highs and joint 229th of 448 for the driest December (rainfall, lowest first). The mean December high of those 448 cities is 28.5°C; Jundiaí is 1.8°C cooler than that mean.
From December to January, average highs rise by 0.2°C to 26.9°C, and monthly rainfall rises from 189 mm to 243 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
Jundiaí climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 26.9°C19.0°C | 19.0°C | 243 | 22.1 | 13.413 h |
| February | 27.2°C19.0°C | 19.0°C | 170 | 19.1 | 12.913 h |
| March | 26.3°C18.3°C | 18.3°C | 135 | 17.6 | 12.212 h |
| April | 25.1°C16.6°C | 16.6°C | 64 | 8.6 | 11.612 h |
| May | 22.6°C13.8°C | 13.8°C | 64 | 6.7 | 11.011 h |
| June | 22.0°C12.3°C | 12.3°C | 49 | 5.2 | 10.711 h |
| July | 22.1°C11.6°C | 11.6°C | 46 | 4.7 | 10.911 h |
| August | 23.8°C12.5°C | 12.5°C | 37 | 4.6 | 11.311 h |
| September | 25.4°C14.7°C | 14.7°C | 86 | 8.9 | 11.912 h |
| October | 26.2°C16.3°C | 16.3°C | 118 | 13.1 | 12.613 h |
| November | 25.8°C16.9°C | 16.9°C | 151 | 15.6 | 13.213 h |
| December, selected | 26.7°C18.3°C | 18.3°C | 189 | 19.9 | 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
- Várzea Paulista in DecemberBrazil · 6 kmHigh 26.6°C · Low 18.1°C · 210 mm rain
- Francisco Morato in DecemberBrazil · 18 kmHigh 26.1°C · Low 17.9°C · 210 mm rain
- Itatiba in DecemberBrazil · 21 kmHigh 26.8°C · Low 18.4°C · 224 mm rain
- Caieiras in DecemberBrazil · 25 kmHigh 26.0°C · Low 17.9°C · 210 mm rain
- Valinhos in DecemberBrazil · 27 kmHigh 27.4°C · Low 18.9°C · 203 mm rain
- Santana de Parnaíba in DecemberBrazil · 29 kmHigh 26.5°C · Low 18.4°C · 181 mm rain
- Mairiporã in DecemberBrazil · 34 kmHigh 26.6°C · Low 18.4°C · 186 mm rain
- Atibaia in DecemberBrazil · 35 kmHigh 26.3°C · Low 18.0°C · 192 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 Jundiaí) is explained once on the Jundiaí year overview and on the Sources, method and limits page.