São Paulo
September
Weather in São Paulo for September 2026
Your guide to São Paulo weather in September - trends and predictions
Until now, September 2026 in São Paulo has been significantly cooler than historical averages by 7.6 °C, with average temperature of 19.2 °C.
Expect cooler weather in the next days in São Paulo with the forecast suggesting a temperature of 22.9 °C, lower than the historical average.
In general, the average temperature in São Paulo at the beginning of September is 26.6 °C. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 24.3 °C by the end of September.
With an average of 3 rainy days, São Paulo experiences minimal rainfall in September.
Temperatures
Rain 🌧️
27
Dry days
3
Rainy days
0
Snow days
29°/18°
Temperatures
19 km/h
Avg max wind
55 %
Avg humidity
São Paulo Weather September
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Temperatures trend during September in São Paulo
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September weather in São Paulo day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Sunny | 29° /15° | 1.7 mm | 6 | |
| 2 Sept. |  Partly cloudy | 27° /15° | 0.1 mm | 8 | |
| 3 Sept. | Sunny | 30° /15° | 0.8 mm | 8 | |
| 4 Sept. | Sunny | 32° /18° | 0.1 mm | 9 | |
| 5 Sept. |  Light rain shower | 28° /15° | 2 mm | 6 | |
| 6 Sept. | Patchy rain possible | 18° /13° | 3.2 mm | 4 | |
| 7 Sept. | Patchy rain possible | 22° /13° | 0.8 mm | 5 | |
| 8 Sept. | Sunny | 29° /16° | 0.2 mm | 7 | |
| 9 Sept. | Sunny | 30° /18° | 1 mm | 7 | |
| 10 Sept. |  Cloudy | 28° /17° | 4.5 mm | 6 | |
| 11 Sept. | Sunny | 31° /16° | 1.9 mm | 7 | |
| 12 Sept. | Sunny | 28° /17° | 10.2 mm | 6 | |
| 13 Sept. | Sunny | 27° /16° | 3.4 mm | 6 | |
| 14 Sept. | Partly cloudy | 26° /15° | 6.9 mm | 7 | |
| 15 Sept. |  Overcast | 22° /14° | 2.6 mm | 6 | |
| 16 Sept. | Patchy rain possible | 25° /14° | 0.6 mm | 6 | |
| 17 Sept. | Sunny | 23° /16° | 0.3 mm | 6 | |
| 18 Sept. | Sunny | 27° /15° | 0.4 mm | 6 | |
| 19 Sept. | Overcast | 23° /13° | 0.1 mm | 9.3 | |
| 20 Sept. | Overcast | 24° /15° | 1.8 mm | 9.5 | |
| 21 Sept. | Sunny | 28° /19° | 0 mm | 10.1 | |
| 22 Sept. | Patchy rain possible | 27° /14° | 3.9 mm | 6 | |
| 23 Sept. | Light rain shower | 18° /13° | 13.5 mm | 5 | |
| 24 Sept. | Light rain shower | 24° /14° | 8.9 mm | 6 | |
| 25 Sept. | Sunny | 29° /16° | 0 mm | 8 | |
| 26 Sept. | Overcast | 28° /17° | 0 mm | 8 | |
| 27 Sept. | Overcast | 25° /15° | 0 mm | 7 | |
| 28 Sept. | Overcast | 30° /15° | 0 mm | 9 | |
| 29 Sept. | Patchy rain possible | 20° /12° | 1.9 mm | 5 | |
| 30 Sept. | Patchy rain possible | 14° /11° | 1.2 mm | 4 | |
| Next | |||||
Important Notice
Our weather forecast for São Paulo in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the São Paulo forecast closer to your planned date for the most up-to-date weather information.
Change Month
São Paulo in September - FAQ
What are the expected maximum and minimum temperatures in São Paulo during September?
During September, expect a variety of temperatures with highs around 29° and lows near 18°, suitable for diverse activities and preferences.
How much rainfall should be expected in São Paulo during September?
Expect minimal rainfall in São Paulo during September, with a total of 18.2 mm over approximately 3 days. This minimal precipitation is unlikely to significantly impact plans.
What are the typical wind conditions in São Paulo during September?
The average wind speed in São Paulo during September is 19 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in São Paulo
Explore the daily rainfall trends and prepare for São Paulos September weather 💧
Typically, São Paulo has 3 rainy days in September with a total of 18.2 mm of rainfall.
UV exposure in São Paulo during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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