Climate averages 1991–2020
São Caetano do Sul weather
in January.
A warm, very wet month: the 2nd warmest and the wettest of the year.
Long-term climate patterns, not a forecast for a particular trip.
January is a warm month in São Caetano do Sul: daytime highs average 26.3°C and nights cool to about 19.2°C. By daytime temperature it is the 2nd warmest of the 12 months.
Expect about 232 mm of rain on roughly 24 days, which makes January a very wet month (the wettest month of the year). Daylight, from sunrise to sunset, lasts about 13 h 25 min on an average January day.
The nearest other city in this atlas is Santo André (5 km away). In January its highs average 26.1°C, about as warm as São Caetano do Sul, with 337 mm of rain.
Among the 448 cities listed in Brazil, São Caetano do Sul ranks joint 393rd of 448 for the warmest January highs and joint 251st of 448 for the driest January (rainfall, lowest first). The mean January high of those 448 cities is 28.5°C; São Caetano do Sul is 2.2°C cooler than that mean.
From January to February, average highs rise by 0.4°C to 26.6°C, and monthly rainfall falls from 232 mm to 180 mm.
The annual picture
January 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 Caetano do Sul climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January, selected | 26.3°C19.2°C | 19.2°C | 232 | 23.8 | 13.413 h |
| February | 26.6°C19.3°C | 19.3°C | 180 | 20.4 | 12.913 h |
| March | 25.6°C18.5°C | 18.5°C | 154 | 20.2 | 12.212 h |
| April | 24.4°C16.9°C | 16.9°C | 64 | 10.6 | 11.612 h |
| May | 21.9°C14.2°C | 14.2°C | 64 | 7.7 | 11.011 h |
| June | 21.5°C12.9°C | 12.9°C | 47 | 5.5 | 10.711 h |
| July | 21.4°C12.2°C | 12.2°C | 54 | 5.7 | 10.811 h |
| August | 22.6°C12.8°C | 12.8°C | 40 | 5.2 | 11.311 h |
| September | 23.7°C14.4°C | 14.4°C | 90 | 9.7 | 11.912 h |
| October | 24.6°C16.0°C | 16.0°C | 116 | 14.6 | 12.613 h |
| November | 24.4°C16.7°C | 16.7°C | 152 | 16.8 | 13.213 h |
| December | 25.8°C18.3°C | 18.3°C | 181 | 20.9 | 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
January in nearby cities
- Santo André in JanuaryBrazil · 5 kmHigh 26.1°C · Low 19.3°C · 337 mm rain
- São Bernardo do Campo in JanuaryBrazil · 8 kmHigh 26.0°C · Low 19.1°C · 337 mm rain
- São Paulo in JanuaryBrazil · 12 kmHigh 26.4°C · Low 19.0°C · 222 mm rain
- Ribeirão Pires in JanuaryBrazil · 17 kmHigh 26.3°C · Low 19.6°C · 337 mm rain
- Guarulhos in JanuaryBrazil · 18 kmHigh 26.4°C · Low 18.9°C · 232 mm rain
- Ferraz de Vasconcelos in JanuaryBrazil · 21 kmHigh 26.5°C · Low 19.0°C · 253 mm rain
- Taboão da Serra in JanuaryBrazil · 25 kmHigh 26.1°C · Low 18.8°C · 288 mm rain
- Itaquaquecetuba in JanuaryBrazil · 26 kmHigh 26.5°C · Low 19.0°C · 253 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 Caetano do Sul) is explained once on the São Caetano do Sul year overview and on the Sources, method and limits page.
Guarulhos lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.