Last updated: August 21, 2025
Ribeirao Preto experiences a dynamic weather palette in September, with temperatures soaring to a maximum of 38°C (101°F) while maintaining an average of 25°C (78°F). The cooler moments are provided by a minimum temperature dipping to 12°C (53°F), offering a refreshing contrast. Despite an arid feel with humidity at 41%, the month sees a modest precipitation total of 28 mm (1.1 in) spread across just 3 days, ensuring that the vibrant surroundings remain lush. This blend of warmth and occasional rain paints a vivid picture of Ribeirao Preto's September climate, inviting both residents and visitors to enjoy its seasonal charms.
September in Ribeirão Preto marks a delightful transition, with temperatures beginning to climb as spring approaches. The month showcases a minimum temperature of 12°C (53°F), providing a cool start to the days, while the average warmth settles at a pleasant 25°C (78°F). As the days progress, the maximum temperatures can soar to a sizzling 38°C (101°F), making it one of the hotter times of the year. This upward trend from the cooler winter months highlights the city's vibrant climate, setting the stage for outdoor activities and the flourishing of spring blossoms. The consistent average of 25°C indicates a warmth that invites both locals and visitors to enjoy the lively atmosphere as summer edges nearer.
In Ribeirao Preto, September marks a subtle transition in the region's precipitation patterns. With 28 mm (1.1 in) of rainfall spread over just 3 days, the month maintains a relatively dry ambiance, aligning with the lingering effects of the dry winter. This slight uptick in precipitation hints at the approaching rainy season, especially when compared to the minimal rainfall of 18 mm (0.7 in) in August. As the city gears up for October's more significant rainfall forecast of 121 mm (4.8 in), September serves as a gentle prelude, gradually signaling the shift from the dry spell to the lush vitality of spring.
In Ribeirao Preto, Brazil, September marks a notable transition in humidity levels, averaging a comfortable 41%. Following the peak moisture of early months like January (85%) and February (87%), the city experiences a steady decline throughout the year. As summer fades, the humidity dips significantly, reaching its lowest in September before further decreasing to 35% in October. This gradual reduction not only enhances the city's air quality but also ushers in a drier atmosphere, making September an ideal month for outdoor activities, as residents and visitors alike enjoy the refreshing change from the sultry summer months.
In September, Ribeirao Preto experiences a UV Index of 12, categorizing it as extreme with a burn time of just 10 minutes. This trend continues from the previous months, where the UV Index remains predominantly high throughout the year, particularly from January to April, which all see values of 11 or above. As the seasons shift, May and June provide a brief respite with slightly lower indices, yet once July rolls around, the intensity rises again, culminating in the same high levels characteristic of the end of the year. For outdoor enthusiasts and sun-seekers, it's crucial to stay informed about the UV Index to ensure safe sun exposure. For more details, visit Ribeirao Preto UV Index.
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As we transition into September in Ribeirao Preto, Brazil, the city enjoys an impressive 316 hours of sunshine, marking a continuation of the radiant weather characteristic of recent months. Following a vibrant August with 313 hours, September maintains this delightful trend, showcasing the warm embrace of the sun that the region is known for. The gradual increase in sunlight from the earlier months, particularly from March onward, signifies the approach of spring, where daylight hours peak before a gentle decline towards the end of the year. With these consistent hours of sunshine, September not only offers a perfect backdrop for outdoor activities but also sets the stage for the pleasant warmth that accompanies the transition into spring.
In Ribeirão Preto, Brazil, September ushers in a promising 66% chance of sunny weather, making it one of the more favorable months for sunshine as the year transitions to spring. This month follows a series of increasingly bright days from mid-winter through August, where the chances reach a peak in July at 83%. As temperatures rise and the likelihood of sunshine fluctuates, September’s outlook is particularly inviting, offering a delightful blend of warmth and blue skies, a trend that sets the tone for the sunnier days of the forthcoming months. With an impressive track record of sun-soaked days, September is an ideal time for outdoor activities and enjoying the vibrant scenery of Ribeirão Preto.
In Ribeirao Preto, Brazil, the daylight duration exhibits a fascinating rhythm throughout the year, with September marking a transition back to longer days. This month enjoys 11 hours of daylight, aligning with the trend observed in August. As the seasons progress, daylight steadily increases, rising to 12 hours in October and peaking at 13 hours in November and December. The year begins with ample sunlight, starting at 13 hours in January before gradually tapering to 10 hours during the depths of winter in June and July. However, as spring approaches, the days grow longer once again, heralding a return to the vibrant, sun-drenched days characteristic of this tropical region.
In September, Ribeirão Preto experiences a notable uptick in wind activity, with an average wind speed of 2.8 m/s (6 mph), marking a steady increase from the gentler breezes of the earlier months. This trend reflects the transition from the milder winter winds of July and August, which hovered around 2.4 m/s and 2.7 m/s, respectively. As the city begins to embrace the warmth of spring, the invigorating winds signal a refreshing change, setting the stage for the vibrant energy of the months to come. This gradual ascent in wind speed not only enhances the atmosphere but also invites locals and visitors alike to enjoy the outdoor charm that September brings to this Brazilian gem.
Weather in Ribeirao Preto varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Ribeirao Preto, focusing on differences in temperature, rainfall, humidity, and UV levels.
September weather typically showcases warm and varied temperatures, with a minimum of 12°C (53°F) and a maximum reaching up to 38°C (101°F). The average temperature hovers around 25°C (78°F), accompanied by relatively low humidity at 41% and minimal precipitation, averaging just 28 mm (1.1 in) over about three days. In contrast, January presents a different climate scenario, characterized by slightly warmer minima of 16°C (61°F) and a maximum of 36°C (97°F). The average temperature remains stable at 25°C (77°F); however, January experiences significantly higher humidity at 85% and much more rainfall, totaling 170 mm (6.7 in) across approximately 16 days. For a deeper look into January weather specifics, you can check Ribeirao Preto weather in January.
September and February showcase contrasting weather patterns in terms of temperature and precipitation. September tends to be warmer, with average temperatures around 25°C (78°F) but can reach as high as 38°C (101°F), while experiencing relatively low humidity at 41%. In contrast, February remains mild with similar average temperatures, but it has a higher minimum of 17°C (63°F) and a cooler maximum of 36°C (97°F). Additionally, February sees a significant increase in precipitation, totaling 151 mm (5.9 in) over 16 days, compared to just 28 mm (1.1 in) over 3 days in September. This results in a much more humid environment in February, with humidity levels at 87%. For a detailed look at February weather in Ribeirão Preto, you can check Ribeirao Preto weather in February.
September and March present distinctly different weather conditions. In September, temperatures are generally warm, with a minimum of 12°C (53°F) and a maximum reaching up to 38°C (101°F), while the average temperature hovers around 25°C (78°F). The month sees relatively low precipitation, with only 28 mm (1.1 in) over about three days and humidity levels at 41%. In contrast, March experiences a more humid atmosphere, with minimum temperatures at 15°C (60°F) and a maximum of 34°C (94°F), maintaining the same average of 25°C (77°F). However, precipitation significantly increases during this month, totaling 99 mm (3.9 in) over approximately 14 days and more than doubling the humidity level to 86%. For a deeper understanding of March's weather in the region, you can visit Ribeirao Preto weather in March.
In comparing the weather between September and April, we see distinct differences. September typically boasts warmer temperatures, with averages reaching 25°C (78°F) and a maximum of 38°C (101°F), while April offers slightly cooler averages of 23°C (74°F) and a peak of 33°C (92°F). In terms of precipitation, April is notably wetter, receiving 55 mm (2.2 in) over 6 days compared to September’s 28 mm (1.1 in) over just 3 days. Furthermore, April's humidity is significantly higher at 79%, compared to September's 41%. For more details, visit Ribeirao Preto weather in April.
In comparing the weather patterns of September and May, notable differences emerge. September boasts a warmer climate with average temperatures reaching 25°C (78°F) and maximums peaking at 38°C (101°F), while May exhibits a cooler average of 21°C (69°F) and maximums of 32°C (90°F). Both months experience similar precipitation levels of 28 mm (1.1 in), but September typically has fewer rainy days, averaging 3 compared to May’s 4. Additionally, humidity is significantly higher in May at 68%, compared to September's drier 41%. For more details about May in this region, you can check Ribeirao Preto weather in May.
September and June exhibit distinct weather characteristics, making each month unique. In September, temperatures range from a minimum of 12°C (53°F) to a maximum of 38°C (101°F), resulting in a much warmer average of 25°C (78°F). The month experiences a slight increase in precipitation, totaling 28 mm (1.1 in) over about three days, paired with a lower humidity of 41%. In contrast, June offers cooler conditions, with temperatures ranging from a minimum of 8°C (46°F) to a maximum of 31°C (88°F) and an average of 20°C (69°F). Precipitation is relatively low, at just 7 mm (0.3 in) over one day, but humidity is notably higher at 60%. To learn more about the specifics of June weather in Ribeirao Preto, visit Ribeirao Preto weather in June.
When comparing the weather between September and July, September tends to be significantly warmer, with average temperatures reaching 25°C (78°F) and a maximum of 38°C (101°F), while July's temperatures are cooler, averaging 19°C (67°F) and peaking at 31°C (88°F). Additionally, September experiences three days of precipitation totaling 28 mm (1.1 in), whereas July has a drier climate with only 11 mm (0.4 in) and no rainy days. Humidity levels are also notable, with September exhibiting a lower humidity of 41% compared to July’s higher 57%. For a closer look at July's climate, you can check out Ribeirao Preto weather in July.
In September, the weather features a minimum temperature of 12°C (53°F) and averages around 25°C (78°F), with a maximum soaring to 38°C (101°F). This month experiences slightly more precipitation at 28 mm (1.1 in) over three days, and humidity levels are lower at 41%. In contrast, August presents cooler conditions, with minimum temperatures dropping to 8°C (46°F) and an average of 21°C (71°F), peaking at 35°C (95°F). Precipitation in August is less, at 18 mm (0.7 in) over the same number of rainy days, though humidity is higher at 48%. For a detailed look at August's weather in Ribeirao Preto, check out Ribeirao Preto weather in August.
In September, the weather features a minimum temperature of 12°C (53°F) and an average of 25°C (78°F), with the mercury peaking at 38°C (101°F). The month sees relatively low precipitation at 28 mm (1.1 in) over just 3 days, and humidity is around 41%. In contrast, October experiences a slightly higher minimum temperature of 15°C (59°F) while maintaining the same average of 25°C (78°F) and a maximum temperature that just nudges higher to 39°C (102°F). However, October is significantly wetter, with precipitation reaching 121 mm (4.8 in) spread over 12 days, along with a drop in humidity to 35%. For a detailed look at the October weather trends, visit Ribeirao Preto weather in October.
In September, the weather is typically warmer and drier, with temperatures ranging from a minimum of 12°C (53°F) to a maximum of 38°C (101°F) and an average of 25°C (78°F). The month experiences relatively low precipitation, totaling 28 mm (1.1 in) over just 3 days, and maintains a humidity level of 41%.
Conversely, November sees slightly cooler temperatures, with minimums around 13°C (55°F) and maximums peaking at 37°C (99°F), also averaging 25°C (76°F). However, it is significantly wetter, accumulating 159 mm (6.2 in) of rainfall over 14 days, and humidity increases to 65%. For more details on the weather specifics, you can check Ribeirao Preto weather in November.
September weather typically features warm temperatures, with daily averages around 25°C (78°F), peaking at 38°C (101°F) on hotter days. The month is relatively dry, seeing only about 28 mm (1.1 in) of precipitation over just 3 days, and a moderate humidity level of 41%. In contrast, December brings slightly warmer minimum temperatures at 15°C (60°F) and an average of 25°C (77°F), but the maximums are lower at 35°C (95°F). However, December is markedly wetter, receiving 171 mm (6.7 in) of rain over 17 days, leading to a much higher humidity of 80%. For more detailed insights into December weather, visit Ribeirao Preto weather in December.
As September unfolds in Ribeirão Preto, residents and visitors alike can expect a noticeable shift in weather compared to the warmer months that precede it. With the average temperature settling at a comfortable 25°C, the month offers a respite from the sweltering heat, while still flirting with highs that can reach an impressive 38°C. Rainfall becomes a rare guest, only gracing the city with minimal precipitation over just a few days, allowing for plenty of sunny enjoyment. This delightful blend of warmth and lower humidity at 41% sets the stage for outdoor activities and a vibrant atmosphere. For a comprehensive view of what to anticipate throughout the year, explore the diverse patterns of the city's climate at Ribeirao Preto Climate.