Climate averages 1991–2020
Osasco 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 Osasco: daytime highs average 26.5°C and nights cool to about 18.9°C. By daytime temperature it is the 2nd warmest of the 12 months.
Expect about 222 mm of rain on roughly 23 days, which makes January a very wet month (the wettest month of the year). Daylight, from sunrise to sunset, lasts about 13 h 24 min on an average January day.
The nearest other city in this atlas is Barueri (9 km away). In January its highs average 26.7°C, about as warm as Osasco, with 230 mm of rain.
Among the 448 cities listed in Brazil, Osasco ranks joint 378th of 448 for the warmest January highs and joint 216th of 448 for the driest January (rainfall, lowest first). The mean January high of those 448 cities is 28.5°C; Osasco is 2.0°C cooler than that mean.
From January to February, average highs rise by 0.3°C to 26.8°C, and monthly rainfall falls from 222 mm to 165 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
Osasco climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January, selected | 26.5°C18.9°C | 18.9°C | 222 | 23.0 | 13.413 h |
| February | 26.8°C19.0°C | 19.0°C | 165 | 19.8 | 12.913 h |
| March | 25.9°C18.3°C | 18.3°C | 139 | 19.0 | 12.212 h |
| April | 24.6°C16.6°C | 16.6°C | 60 | 9.5 | 11.612 h |
| May | 22.1°C13.9°C | 13.9°C | 58 | 7.1 | 11.011 h |
| June | 21.6°C12.6°C | 12.6°C | 45 | 5.3 | 10.711 h |
| July | 21.6°C11.9°C | 11.9°C | 49 | 5.4 | 10.811 h |
| August | 23.1°C12.6°C | 12.6°C | 36 | 4.8 | 11.311 h |
| September | 24.5°C14.4°C | 14.4°C | 84 | 9.3 | 11.912 h |
| October | 25.3°C15.9°C | 15.9°C | 109 | 13.5 | 12.613 h |
| November | 25.0°C16.5°C | 16.5°C | 145 | 15.8 | 13.213 h |
| December | 26.2°C18.1°C | 18.1°C | 170 | 20.1 | 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
- Barueri in JanuaryBrazil · 9 kmHigh 26.7°C · Low 19.2°C · 230 mm rain
- Taboão da Serra in JanuaryBrazil · 10 kmHigh 26.1°C · Low 18.8°C · 288 mm rain
- Embu das Artes in JanuaryBrazil · 14 kmHigh 26.2°C · Low 19.0°C · 288 mm rain
- São Paulo in JanuaryBrazil · 16 kmHigh 26.4°C · Low 19.0°C · 222 mm rain
- Santana de Parnaíba in JanuaryBrazil · 16 kmHigh 26.8°C · Low 19.2°C · 230 mm rain
- Caieiras in JanuaryBrazil · 19 kmHigh 26.3°C · Low 18.7°C · 267 mm rain
- Itapecerica da Serra in JanuaryBrazil · 21 kmHigh 25.2°C · Low 18.1°C · 288 mm rain
- São Caetano do Sul in JanuaryBrazil · 27 kmHigh 26.3°C · Low 19.2°C · 232 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 Osasco) is explained once on the Osasco year overview and on the Sources, method and limits page.
São Paulo lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.