Click on a day for an hourly weather forecast
The temperatures in Sao Paulo in September are comfortable with low of 11°C and and high up to 21°C.
You can expect rain for roughly half of the month of September in Sao Paulo. We’re expecting roughly 8 to 15 days of rain, so your rubber boots and umbrella are going to see plenty of use this month if you’re keen on staying dry.
Our weather forecast can give you a great sense of what weather to expect in Sao Paulo in September 2025.
If you’re planning to visit Sao Paulo in the near future, we highly recommend that you review the 14 day weather forecast for Sao Paulo before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 28° / 17° | 13 | 18 | 0 | 286 mm | Good | Sao Paulo in January |
| February | 28° / 17° | 11 | 17 | 0 | 220 mm | Good | Sao Paulo in February |
| March | 26° / 15° | 10 | 21 | 0 | 200 mm | Good | Sao Paulo in March |
| April | 23° / 13° | 7 | 23 | 0 | 148 mm | Good | Sao Paulo in April |
| May | 19° / 10° | 8 | 23 | 0 | 204 mm | Ok | Sao Paulo in May |
| June | 17° / 9° | 7 | 23 | 0 | 183 mm | Ok | Sao Paulo in June |
| July | 17° / 8° | 7 | 23 | 0 | 199 mm | Ok | Sao Paulo in July |
| August | 19° / 10° | 6 | 25 | 0 | 168 mm | Good | Sao Paulo in August |
| September | 21° / 11° | 8 | 22 | 0 | 203 mm | Ok | Sao Paulo in September |
| October | 23° / 12° | 10 | 21 | 0 | 266 mm | Good | Sao Paulo in October |
| November | 26° / 14° | 9 | 21 | 0 | 197 mm | Good | Sao Paulo in November |
| December | 28° / 16° | 12 | 19 | 0 | 225 mm | Good | Sao Paulo in December |