Last updated: August 21, 2025
September weather in São Paulo, Brazil, presents a captivating blend of warmth and dryness. With maximum temperatures soaring up to 38°C (100°F) and an average of 29°C (84°F), the month tends to feel balmy and inviting. Nights cool off to a pleasant 20°C (68°F), creating a comfortable range for both day and evening activities. Notably, precipitation is minimal, with only 1 mm (0.0 in) falling across zero days, allowing residents and visitors to bask in the sunshine. The humidity level rests at a moderate 59%, making September an ideal time to explore the vibrant city and its cultural offerings.
In September, temperatures in Paulista, Brazil begin to transition from the cooler winter months into the warmer spring climate. The average temperature hovers around 29°C (84°F), with a minimum of 20°C (68°F) and a peak that can reach up to 38°C (100°F). This month marks a gradual warming trend, building on the patterns observed in August, while still retaining the pleasant ambiance of the early spring. As the month progresses, residents and visitors alike can expect increasingly sunny days, making it an ideal time for outdoor activities and exploration. The shift from the previous cooler months highlights Paulista's vibrant climate, as it heads towards the hotter summer season.
September in Paulista, Brazil, marks a striking continuation of the dry spell that began in August, with precipitation amounting to just 1 mm and no rainy days recorded. This is part of a broader trend leading into the latter part of the year, where the rainfall significantly dwindles, dropping from a high of 166 mm in March down to a mere trace by September. This stark reduction in precipitation is indicative of the region's dry season, where humidity levels also tend to decrease, creating a distinct contrast to the wetter months earlier in the year. As residents enjoy the sun-soaked days of September, the landscape begins to shift, preparing for the light showers that will eventually return in December.
In September, Paulista, Brazil, experiences a notable decline in humidity, averaging just 59%. This marks a significant drop from the sweltering highs of January through April, where humidity levels hover above 90%. As the region transitions from the wet to the dry season, September’s milder humidity offers a refreshing respite, paving the way for drier months ahead. Following August's 65%, this downward trend continues, showcasing how the climate shifts as spring approaches, with subsequent months, such as October and November, dipping even lower. Overall, September stands as a pivotal month that heralds the end of humid conditions, setting the stage for the crisp, comfortable weather of late spring.
In Paulista, Brazil, September marks a continuation of the intense sun exposure characteristic of the region, with a UV Index of 14, categorizing it as extreme. This high UV level means that residents and visitors alike need to be cautious, as the burn time remains a brisk 10 minutes. Trends for the year reveal consistent extreme exposure, particularly from March through November, where the UV Index hovers between 12 and 15. This pattern highlights the importance of sun protection throughout much of the year. For detailed insights about UV levels in this sun-soaked region, explore the interactive details at Paulista UV Index.
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As September arrives in Paulista, Brazil, the sun graces the city with 342 hours of radiant daylight, keeping the summer spirit alive. This vibrant month showcases a slight dip from August's peak of 343 hours, yet it remains significantly higher than the early months of the year, like January with only 276 hours. The trend of increasing sunlight hours culminates beautifully in October, where the sunlight flourishes further to 358 hours, promising an exuberant transition into the later months. This gradual rise in daylight showcases Paulista's enchanting climate, making September a delightful time for residents and visitors to soak up the sun before the days begin to shorten.
In Paulista, Brazil, the month of September stands out as a beacon of sunshine, with a striking 75% chance of clear skies. This marks a significant increase from the preceding months, showcasing a welcoming transition into spring. Following the relatively cooler winter months of June and July, which boast sun chances of 59% and 64%, September's sunny forecast signals the return of vibrant outdoor activities. As the year progresses, the likelihood of sunshine typically fluctuates, but in September, residents and visitors alike can eagerly anticipate numerous days filled with warmth and light, setting the stage for a delightful change in the season's ambiance.
In September, Paulista, Brazil, enjoys 12 hours of daylight, marking a return to the longer days typical of early in the year. From January through March, the region basked in the same amount of daylight, but as April approached, a gradual reduction to 11 hours commenced, continuing through to August. This seasonal shift reflects a predictable pattern influenced by the Earth’s tilt and orbit, showcasing the unique rhythms of tropical climates. As October nears, daylight remains consistent at 12 hours, reaffirming September's role as a bridge back to the sun-soaked days of early summer, inviting both locals and visitors to relish the vibrant atmosphere of the region.
As September unfolds in Paulista, Brazil, the average wind speed rises to 4.6 m/s (10 mph), creating a refreshing contrast to the milder breezes of the earlier months. This gentle acceleration follows a gradual buildup from the tranquil winds of summer, peaking in August at 5.2 m/s (12 mph). The progression reflects a dynamic shift in weather patterns, as the cooler transition into the fall brings an invigorating energy to the atmosphere. After September, wind speeds slightly taper into October, illustrating a seasonal rhythm where nature's breath dances between the warmer days and the cooling nights. This month not only signifies a change in speed but also heralds the shift towards more varied weather, setting the stage for the delightful unpredictability of Brazilian spring.
Weather in Paulista varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Paulista, focusing on differences in temperature, rainfall, humidity, and UV levels.
In September, the weather is typically warm and dry, with temperatures ranging from a minimum of 20°C (68°F) to a maximum of 38°C (100°F), and an average temperature of 29°C (84°F). Humidity is relatively moderate at 59%, and without any recorded precipitation, the month remains largely rain-free.
In contrast, January experiences slightly higher temperatures, with a minimum of 21°C (70°F) and an average of 30°C (86°F), reaching up to 38°C (102°F). However, this month brings significant changes in weather, as it sees about 44 mm (1.7 in) of rainfall over six days, contributing to a much higher humidity level of 88%. For more details about January weather, you can visit Paulista weather in January.
In comparing the weather between September and February, September typically enjoys warm temperatures with a minimum of 20°C (68°F) and an average high of 38°C (100°F), accompanied by very little precipitation—averaging just 1 mm and experiencing 0 rainy days. In contrast, February maintains a similar average temperature range, with a minimum of 21°C (70°F) and a maximum of 38°C (101°F), but is marked by significantly higher precipitation levels, totaling 126 mm over 14 days, and a higher humidity at 91%. This makes February notably wetter and more humid compared to the dry and warm conditions of September. For more specific insights, you can visit Paulista weather in February.
In September, the weather tends to be warmer, with average temperatures ranging from a minimum of 20°C (68°F) to a maximum of 38°C (100°F) and little to no precipitation. This month enjoys a relatively low humidity level of about 59%, contributing to a dry and comfortable atmosphere. In contrast, March experiences slightly cooler temperatures, with a minimum of 21°C (71°F) and an average of 28°C (83°F). However, it is significantly wetter, averaging 166 mm (6.5 in) of rainfall over 17 days, resulting in a humidity level of 92%. This wet and humid climate in March is quite distinct from the arid conditions of September. For more detailed insights, you can check Paulista weather in March.
September and April present striking contrasts in weather patterns. September typically enjoys warm temperatures, with a minimum of 20°C (68°F) and an average high of 29°C (84°F), accompanied by dry conditions, as evidenced by negligible precipitation. In contrast, April experiences slightly warmer temperatures, with a minimum of 21°C (70°F) and an average high of 28°C (82°F), but it is marked by significantly higher humidity and frequent rainfall, accumulating around 116 mm (4.6 in) over 15 days. For more details about the conditions in April, you can refer to Paulista weather in April.
September and May offer contrasting weather conditions, making each month unique in its own right. September boasts higher average temperatures, ranging from a minimum of 20°C (68°F) to a maximum of 38°C (100°F), with just 1 mm of precipitation and no rainy days, leading to a relatively dry atmosphere with around 59% humidity. In contrast, May has slightly cooler temperatures, with averages from 20°C (67°F) to 37°C (99°F), but is marked by significantly more rainfall, totaling 40 mm (1.6 in) over 7 days, resulting in higher humidity levels at around 89%. For more information, visit Paulista weather in May.
In September, the weather is typically hotter and drier compared to June. September experiences minimum temperatures around 20°C (68°F) and maximum temperatures up to 38°C (100°F), with an average of 29°C (84°F) and virtually no precipitation, making it a very dry month. In contrast, June has slightly cooler temperatures, with a minimum of 19°C (67°F) and a maximum of 35°C (96°F), averaging 27°C (81°F). Additionally, June sees around 10 mm (0.4 in) of rain over three days, contributing to a higher humidity level of 80%. For a closer look at the weather specifics in June, you can visit Paulista weather in June.
In comparing the weather of September and July, September boasts slightly warmer temperatures with a minimum of 20°C (68°F) and an average of 29°C (84°F), reaching a maximum of 38°C (100°F). In contrast, July has cooler temperatures, with a minimum of 18°C (65°F) and an average of 27°C (81°F), topping out at 36°C (96°F). While September enjoys dry conditions with just 1 mm of precipitation over 0 days and a humidity level of 59%, July sees more moisture, accumulating 20 mm of rain over 3 days and higher humidity at 70%. For more details, check out Paulista weather in July.
In comparing the weather of September and August, September generally sees slightly warmer temperatures, with a minimum of 20°C (68°F) and a maximum of 38°C (100°F), while August has a minimum of 19°C (67°F) and a maximum of 36°C (97°F). The average temperature also rises from 28°C (83°F) in August to 29°C (84°F) in September. Both months experience minimal precipitation, with just 1 mm (0.0 in) recorded over 0 days, although September's humidity is a tad lower at 59%, compared to August's 65%. For more detailed information on August weather, you can check Paulista weather in August.
September and October showcase a gradual increase in temperatures, with September averaging 29°C (84°F) and October rising to 30°C (86°F). Both months remain dry, recording only 1 mm of precipitation and experiencing zero rainy days. Notably, October tends to be slightly warmer at night, with a minimum temperature of 21°C (71°F) compared to September's 20°C (68°F). Humidity levels also dip a bit, from 59% in September to 53% in October, making the air feel a bit more comfortable. For a detailed look at conditions specific to Paulista, check out Paulista weather in October.
September and November share similar warm temperatures, with averages around 29°C (84°F) in September and slightly higher at 30°C (87°F) in November. Both months experience a maximum temperature of up to 38°C (100°F in September, 101°F in November), but November starts off warmer, with a minimum temperature of 22°C (72°F) compared to 20°C (68°F) in September. Precipitation remains consistent in both months, with just 1 mm recorded and no rainy days, although November boasts lower humidity at 49%, compared to September's 59%. For a detailed look at what to expect, check out this link: Paulista weather in November.
In September, the weather is warm, with temperatures ranging from a minimum of 20°C (68°F) to a maximum of 38°C (100°F) and an average of 29°C (84°F). Notably, there is virtually no precipitation with only 1 mm recorded over zero days, and humidity levels sit at a comfortable 59%. In contrast, December brings slightly warmer temperatures, with minimums at 22°C (73°F) and averages reaching 30°C (87°F), while the maximum remains consistent at 38°C (101°F). However, December experiences a bit more moisture, with 14 mm of rainfall spread over three days, maintaining the same humidity level of 59%. For more detailed information about December weather, visit Paulista weather in December.
As September rolls in, Paulista experiences a delightful transition, characterized by warm temperatures and minimal rainfall. With maximums reaching a scorching 38°C and an average hovering around a pleasant 29°C, this month stands out with its dry conditions, recording no precipitation days. The humidity settles at a comfortable 59%, making it an inviting time for locals and visitors alike. Compared to the wetter months that precede it, September offers a refreshing break, perfect for outdoor exploration and enjoyment. Discover more about the region's climate in detail at Paulista Climate.