Climate averages 1991–2020
São Sebastião (Sao Paulo), Brazil weather
in August.
A warm, moderately wet month: the 11th warmest and the driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
August is a warm month in São Sebastião (Sao Paulo), Brazil: daytime highs average 23.0°C and nights cool to about 18.1°C. By daytime temperature it is the 11th warmest of the 12 months.
Expect about 76 mm of rain on roughly 9 days, which makes August a moderately wet month (the driest month of the year). Daylight, from sunrise to sunset, lasts about 11 h 18 min on an average August day.
The nearest other city in this atlas is Caraguatatuba (16 km away). In August its highs average 24.0°C, 1.0°C warmer than São Sebastião (Sao Paulo), Brazil, with 55 mm of rain.
Among the 448 cities listed in Brazil, São Sebastião (Sao Paulo), Brazil ranks joint 357th of 448 for the warmest August highs and joint 360th of 448 for the driest August (rainfall, lowest first). The mean August high of those 448 cities is 26.2°C; São Sebastião (Sao Paulo), Brazil is 3.2°C cooler than that mean.
From August to September, average highs rise by 0.4°C to 23.4°C, and monthly rainfall rises from 76 mm to 132 mm.
The annual picture
August 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 Sebastião (Sao Paulo), Brazil climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 27.8°C23.9°C | 23.9°C | 277 | 22.3 | 13.413 h |
| February | 28.1°C24.1°C | 24.1°C | 231 | 19.7 | 12.913 h |
| March | 27.2°C23.4°C | 23.4°C | 236 | 20.4 | 12.212 h |
| April | 26.0°C22.0°C | 22.0°C | 130 | 13.7 | 11.612 h |
| May | 24.1°C19.9°C | 19.9°C | 115 | 11.8 | 11.011 h |
| June | 23.5°C18.7°C | 18.7°C | 82 | 9.5 | 10.711 h |
| July | 22.9°C18.0°C | 18.0°C | 92 | 8.7 | 10.811 h |
| August, selected | 23.0°C18.1°C | 18.1°C | 76 | 8.9 | 11.311 h |
| September | 23.4°C19.0°C | 19.0°C | 132 | 13.8 | 11.912 h |
| October | 24.3°C20.2°C | 20.2°C | 146 | 15.2 | 12.613 h |
| November | 24.9°C21.0°C | 21.0°C | 187 | 17.5 | 13.213 h |
| December | 26.7°C22.7°C | 22.7°C | 214 | 19.2 | 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
August in nearby cities
- Caraguatatuba in AugustBrazil · 16 kmHigh 24.0°C · Low 17.6°C · 55 mm rain
- Ubatuba in AugustBrazil · 50 kmHigh 22.6°C · Low 17.4°C · 93 mm rain
- Jacareí in AugustBrazil · 76 kmHigh 23.9°C · Low 12.9°C · 35 mm rain
- Caçapava in AugustBrazil · 79 kmHigh 24.2°C · Low 13.0°C · 37 mm rain
- São José dos Campos in AugustBrazil · 81 kmHigh 24.1°C · Low 12.9°C · 35 mm rain
- Taubaté in AugustBrazil · 83 kmHigh 24.2°C · Low 12.5°C · 34 mm rain
- Mogi das Cruzes in AugustBrazil · 84 kmHigh 22.5°C · Low 12.4°C · 42 mm rain
- Pindamonhangaba in AugustBrazil · 93 kmHigh 24.8°C · Low 12.8°C · 34 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 Sebastião) is explained once on the São Sebastião (Sao Paulo), Brazil year overview and on the Sources, method and limits page.