São Paulo weather in September
Temperature, rain and sunshine in September: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in September
Good
Best time to visit: April – September
What is the weather like in São Paulo in September?
In September, São Paulo is warm: daytime highs average 24 °C, and nights cool down to about 15 °C. Expect around 6 hours of sunshine a day. Rain falls on about 9 days, adding up to 75 mm. All in all, September is a good month for a holiday in São Paulo.
September compared
How the weather changes from August to October. Tap a month to open it.
| AugustAug | SeptemberSep | OctoberOct | |
|---|---|---|---|
| Score | 88 | 79 | 65 |
| Day | 23° | 24° | 25° |
| Night | 13° | 15° | 16° |
| Sun | 6 h | 6 h | 5 h |
| Rain days | 5 | 9 | 14 |
More details for September
- Daylight
- 11 h 56 min06:04 – 18:00
- UV index
- 10 · very highclear sky, noon (estimate)All months
- Muggy days
- 1 daydew point 18 °C or moreAll months
- Wind
- 17 km/haverage daily peakAll months
- Cloud cover
- 62 %on averageAll months
- Hot days
- 4 days30 °C or moreAll months
- Time zone
- UTC−3America/Sao_Paulo
How the score comes together
- Temperatureweight 50 %100 %
- Sunshineweight 20 %45 %
- Few rainy daysweight 30 %66 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in September
- Sunscreen
- Sunglasses & sun hat
- A jumper for the evenings
- Rain jacket or umbrella
São Paulo in September: quick answers
Is São Paulo hot in September?
Warm rather than hot: in September, daytime highs in São Paulo average 24 °C and nights cool to about 15 °C. On about 4 days the thermometer climbs to 30 °C or more.
Does it rain much in São Paulo in September?
Rain falls on about 9 days, adding up to 75 mm.
São Paulo month by month
The whole year in São PauloAll destinations: BrazilWhere to go in September
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences