São Paulo weather in September
September is one of the best months to visit São Paulo: highs of 26°C (78°F) and about 68 mm (2.7 in) of rain on average. Nights average 13°C (55°F) and cloud cover 59% (NASA POWER, 2001–2025 averages). It is the 5th driest month of the year and the 6th coolest. Compared with August, it is warmer and wetter; October brings highs of 27°C (80°F) and 104 mm (4.1 in) of rain.
Figures are long-term averages for São Paulo, the largest city in São Paulo. See below for other places.
Is September a good time to visit São Paulo?
best month Weather score 77/100.
Yes. September is one of the best months for weather in São Paulo.
Does it rain a lot in São Paulo in September?
Some rain is normal: about 68 mm (2.7 in) falls in an average September. It is the 5th driest month of the year.
How warm is São Paulo in September?
Days average 26°C (78°F) and nights 13°C (55°F).
São Paulo weather by month
| Month | High | Low | Rain | Cloud | Weather |
|---|---|---|---|---|---|
| January | 27°C (80°F) | 18°C (64°F) | 230 mm | 78% | least pleasant |
| February | 27°C (80°F) | 18°C (64°F) | 175 mm | 69% | least pleasant |
| March | 26°C (79°F) | 17°C (63°F) | 145 mm | 65% | fair |
| April | 25°C (76°F) | 15°C (60°F) | 84 mm | 57% | best |
| May | 22°C (72°F) | 12°C (54°F) | 67 mm | 57% | best |
| June | 22°C (71°F) | 11°C (52°F) | 58 mm | 53% | best |
| July | 22°C (71°F) | 10°C (50°F) | 61 mm | 48% | best |
| August | 24°C (74°F) | 11°C (52°F) | 36 mm | 47% | best |
| September | 26°C (78°F) | 13°C (55°F) | 68 mm | 59% | best |
| October | 27°C (80°F) | 15°C (58°F) | 104 mm | 71% | fair |
| November | 26°C (80°F) | 15°C (60°F) | 148 mm | 75% | fair |
| December | 27°C (81°F) | 17°C (63°F) | 177 mm | 77% | least pleasant |
Sources: 2001–2025 monthly averages from NASA POWER (MERRA-2 reanalysis). Page updated . How we rate months
Weather across São Paulo in September
Weather can differ a lot within São Paulo: coasts, hills and mountains each have their own climate.
| Place | High | Low | Rain | Weather |
|---|---|---|---|---|
| São Paulo | 26°C (78°F) | 13°C (55°F) | 68 mm | best |
| Guarulhos | 26°C (78°F) | 13°C (56°F) | 68 mm | best |
| Campinas | 28°C (83°F) | 13°C (56°F) | 59 mm | best |
| São Bernardo do Campo | 26°C (78°F) | 13°C (55°F) | 68 mm | best |
| Sorocaba | 27°C (80°F) | 13°C (55°F) | 68 mm | best |
| Osasco | 26°C (78°F) | 13°C (55°F) | 68 mm | best |
| São José dos Campos | 27°C (81°F) | 13°C (55°F) | 60 mm | best |
| Ribeirão Preto | 32°C (90°F) | 17°C (62°F) | 50 mm | best |
| Santo André | 26°C (78°F) | 13°C (56°F) | 68 mm | best |
| São José do Rio Preto | 33°C (92°F) | 18°C (64°F) | 49 mm | fair |
| Jardim Presidente Dutra | 26°C (78°F) | 13°C (56°F) | 68 mm | best |
| Jundiaí | 28°C (83°F) | 13°C (56°F) | 59 mm | best |