Climate averages 1991–2020
Guarulhos weather
in August.
A warm, moderately wet month: the 9th warmest and the driest of the year. Meets the pleasant-weather rule
Long-term climate patterns, not a forecast for a particular trip.
August is a warm month in Guarulhos: daytime highs average 22.8°C and nights cool to about 12.7°C. By daytime temperature it is the 9th warmest of the 12 months.
Expect about 40 mm of rain on roughly 5 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 São Paulo (14 km away). In August its highs average 23.0°C, about as warm as Guarulhos, with 36 mm of rain.
Among the 448 cities listed in Brazil, Guarulhos ranks joint 361st of 448 for the warmest August highs and joint 266th of 448 for the driest August (rainfall, lowest first). The mean August high of those 448 cities is 26.2°C; Guarulhos is 3.4°C cooler than that mean.
From August to September, average highs rise by 1.2°C to 24.1°C, and monthly rainfall rises from 40 mm to 90 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
Guarulhos climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 26.4°C18.9°C | 18.9°C | 232 | 23.8 | 13.413 h |
| February | 26.8°C19.0°C | 19.0°C | 180 | 20.4 | 12.913 h |
| March | 25.7°C18.3°C | 18.3°C | 154 | 20.2 | 12.212 h |
| April | 24.5°C16.7°C | 16.7°C | 64 | 10.6 | 11.612 h |
| May | 22.0°C14.0°C | 14.0°C | 64 | 7.7 | 11.011 h |
| June | 21.5°C12.7°C | 12.7°C | 47 | 5.5 | 10.711 h |
| July | 21.5°C12.0°C | 12.0°C | 54 | 5.7 | 10.811 h |
| August, selected | 22.8°C12.7°C | 12.7°C | 40 | 5.2 | 11.311 h |
| September | 24.1°C14.4°C | 14.4°C | 90 | 9.7 | 11.912 h |
| October | 24.9°C15.9°C | 15.9°C | 116 | 14.6 | 12.613 h |
| November | 24.7°C16.5°C | 16.5°C | 152 | 16.8 | 13.213 h |
| December | 25.9°C18.0°C | 18.0°C | 181 | 20.9 | 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
August in nearby cities
- São Paulo in AugustBrazil · 14 kmHigh 23.0°C · Low 12.8°C · 36 mm rain
- Mairiporã in AugustBrazil · 17 kmHigh 23.5°C · Low 13.0°C · 36 mm rain
- São Caetano do Sul in AugustBrazil · 18 kmHigh 22.6°C · Low 12.8°C · 40 mm rain
- Ferraz de Vasconcelos in AugustBrazil · 19 kmHigh 22.8°C · Low 12.9°C · 42 mm rain
- Itaquaquecetuba in AugustBrazil · 19 kmHigh 22.8°C · Low 12.8°C · 42 mm rain
- Santo André in AugustBrazil · 22 kmHigh 22.0°C · Low 12.9°C · 68 mm rain
- Arujá in AugustBrazil · 23 kmHigh 22.6°C · Low 12.2°C · 42 mm rain
- Caieiras in AugustBrazil · 24 kmHigh 23.0°C · Low 12.6°C · 37 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 Guarulhos) is explained once on the Guarulhos year overview and on the Sources, method and limits page.
São Caetano do Sul lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.