Last updated: August 21, 2025
In September, São José do Rio Preto experiences a dynamic climate, characterized by maximum temperatures soaring to 40°C (104°F) and an average of 26°C (79°F). The month brings a glimpse of cooler days, with temperatures dipping to a minimum of 11°C (53°F), offering a refreshing contrast. Rainfall is modest, with only 23 mm (0.9 in) of precipitation over approximately 3 days, accompanied by a comfortable humidity level of 41%. This interplay of heat and sporadic rain crafts a unique atmosphere for residents and visitors alike, making September an intriguing month for outdoor activities and exploration.
In September, São José do Rio Preto experiences a warm transition into spring, with temperatures showing significant variability. The month opens with minimum temperatures around 11°C (53°F), rising to an average of 26°C (79°F), and peaking at a sizzling 40°C (104°F). This marks a noticeable increase from the cooler winter months, as the city begins to shake off the chill. Compared to August, where maximums can reach 35°C (96°F), September’s highs push the envelope, hinting at the impending heat of summer. The shift towards warmer weather is evident, making it a vibrant time for outdoor activities as the days become sunnier and longer.
In September, Sao Jose do Rio Preto experiences a subtle shift in its precipitation patterns, echoing the tail-end of winter. With an average of 23 mm (0.9 in) of rainfall over 3 days, the month marks a gradual transition towards the wetter months ahead. This is particularly notable as it mirrors August's rainfall totals while being a stark contrast to the earlier dry spell of June and July, which recorded almost no rain. September serves as a gentle reminder of the impending wet season, setting the stage for a significant uptick in rainfall as the region prepares for the heavier downpours of late spring and early summer.
As September rolls into Sao Jose do Rio Preto, the city welcomes the lower humidity levels, with an average humidity of just 41%. This marks a significant decline from the previous months, particularly from the highs of 85% in January and 87% in February. The trend reveals a gradual shift towards drier conditions, peaking in the winter months with July reaching only 57% and August even lower at 48%. Following September, the humidity continues its downward trajectory, hitting a low of 35% in October before starting to rise again as the year draws to a close. This seasonal variation not only influences the local climate but also affects daily life, making September a notably comfortable month in terms of moisture levels.
As September arrives in Sao Jose do Rio Preto, Brazil, residents can expect a UV Index of 12, categorized as extreme, with a burn time of just 10 minutes. This aligns with the high UV levels observed during the preceding months, reinforcing the region's trend of intense sun exposure, particularly in the first half of the year where values soared between 15 and 16. Following a slight dip in May and June, the UV Index rebounds, echoing the urgency for sun safety as we transition toward the end of the year, where similar extreme levels persist through to December. To stay informed and protect your skin while enjoying the sunshine, check the Sao Jose do Rio Preto UV Index.
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As September unfolds in São José do Rio Preto, the city basks in an impressive 319 hours of sunshine, marking it as one of the sunniest months of the year. This delightful increase in daylight follows a steady upward trend since May, showcasing a vibrant transition into spring. After a relatively cooler winter, with June at 291 hours and July peaking at 314 hours, the warmth expands, culminating in September's radiant glow. This growing abundance of sunlight is not just a seasonal change; it heralds the impending arrival of October, which maintains a close competition with 317 hours of sun, enriching the region's vibrant atmosphere. Residents and visitors alike can revel in the beauty of the season as days grow longer and brighter, inviting outdoor activities and community gatherings.
As September rolls into São José do Rio Preto, the likelihood of sunny weather remains promising, with a 71% chance of clear skies. This marks a slight decline from the peak sunshine observed in July (84%) and August (74%), but it still ensures plenty of joyful days outdoors. Following the sunnier months, September sets a bright tone before the onset of more variable weather in the coming months, particularly as the chances dip in October (43%) and November (37%). Overall, September's weather continues to reflect a strong trend of favorable conditions, making it an ideal time for outdoor activities and enjoying the vibrant local landscape.
In September, Sao Jose do Rio Preto enjoys a pleasant 11 hours of daylight, maintaining the balance established during the preceding months. As the year progresses from the long summer days of January with 13 hours of sunlight, the duration gradually decreases to 10 hours in the winter months of June and July. However, by September, the daylight begins its gentle ascent again, marking a transition toward longer days ahead. This consistent pattern showcases the region's subtropical climate, where daylight durations fluctuate, yet always promise a return to brightness as the year approaches its end. With October and November heralding longer days once more, September stands as a bridge between the rich summer light and the gradual shift towards the warmth of summer's return.
As September unfolds in São José do Rio Preto, the winds begin to pick up after the gentle breezes of winter. With an average wind speed of 3.0 m/s (7 mph), September stands out for its invigorating gusts, marking a slight dip from the peak winds of August, which were measured at 3.2 m/s (7 mph). This transition effectively signals the shift from the cooler months toward the warmth of spring. Notably, September retains a refreshing consistency, continuing the upward trend in wind speeds that began in the heart of winter. As the season progresses, these breezy conditions create a perfect backdrop for outdoor activities, inviting residents and visitors alike to savor the pleasant weather.
Weather in Sao Jose do Rio Preto varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Sao Jose do Rio Preto, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January present contrasting weather conditions. In September, temperatures can soar to a maximum of 40°C (104°F), with an average of 26°C (79°F) and relatively low humidity at 41%. Rainfall is minimal, with only 23 mm (0.9 in) over about three days, making it a drier month. In stark contrast, January sees milder maximum temperatures at 35°C (96°F) and higher humidity at 85%. Precipitation increases significantly to 174 mm (6.8 in), typically spread across 17 days, creating a lush and humid atmosphere. For a more detailed look at January weather, you can visit Sao Jose do Rio Preto weather in January.
September and February present contrasting weather patterns that highlight the seasonal shifts. In September, temperatures can soar to a high of 40°C (104°F), with an average temperature of 26°C (79°F), but the month is relatively dry, experiencing only about 23 mm (0.9 in) of precipitation over just three days and average humidity of 41%. In contrast, February features milder temperatures with a maximum of 35°C (96°F) and a minimum of 16°C (62°F), but it's significantly wetter, with 181 mm (7.1 in) of rainfall spread across 18 days, leading to a much higher humidity level of 87%. For a detailed look at February's weather, check out Sao Jose do Rio Preto weather in February.
In September, temperatures in Sao Jose do Rio Preto range from a mild 11°C (53°F) at night to a scorching 40°C (104°F) during the day, with an average temperature of 26°C (79°F). The month experiences relatively low precipitation, with only 23 mm (0.9 in) falling over three days, resulting in a more comfortable humidity level of 41%. In contrast, March brings about significantly higher humidity, averaging 86%, and a cooler minimum temperature of 16°C (62°F). The weather in March is characterized by increased rainfall, with a total of 113 mm (4.5 in) spread across 13 days, making it one of the wetter months in the year. For a detailed look at the weather specifics, you can visit Sao Jose do Rio Preto weather in March.
When comparing the weather in September and April, a noticeable difference in temperature and humidity is evident. September typically boasts a wider temperature range, with minimums around 11°C (53°F) and maximums soaring up to 40°C (104°F), whereas April’s temperature stays more moderate, with minimums of 13°C (56°F) and maximums peaking at 34°C (94°F). Additionally, April experiences higher humidity levels at 79% compared to September's 41%, making it feel more humid and tropical. Precipitation is also greater in April, with an average of 52 mm (2.1 in) over 5 days, contrasting with September's lower total of 23 mm (0.9 in) over just 3 days. For more detailed information, check out Sao Jose do Rio Preto weather in April.
September and May weather in Sao Jose do Rio Preto exhibit notable differences. In September, temperatures can reach a high of 40°C (104°F) with an average of 26°C (79°F), while May's temperatures are generally milder, peaking at 33°C (92°F) and averaging 22°C (71°F). Interestingly, September tends to be drier, with only 23 mm (0.9 in) of precipitation over about three days, compared to May, which sees slightly more rainfall at 33 mm (1.3 in) over four days. Additionally, humidity is significantly higher in May at 68%, contrasting with September's lower average humidity of 41%. For more detailed information on the weather conditions, check out Sao Jose do Rio Preto weather in May.
September and June present notable differences in weather patterns. In September, temperatures can soar as high as 40°C (104°F), with an average of 26°C (79°F) and a minimal temperature of 11°C (53°F). The month experiences low precipitation, with only 23 mm (0.9 in) of rain over approximately three days and a humidity level of 41%. In contrast, June features milder conditions, with temperatures peaking at 32°C (90°F) and an average of 22°C (71°F), while the minimum temperature reaches 8°C (47°F). Rainfall is significantly lower in June at just 6 mm (0.2 in) over a single day, but the humidity is higher at 60%. For a more detailed overview, check out Sao Jose do Rio Preto weather in June.
In September, the weather in Sao Jose do Rio Preto tends to be significantly warmer than in July. While July experiences a cooler minimum temperature of 4°C (39°F) and an average of 21°C (70°F), September sees a minimum of 11°C (53°F) and a much higher average of 26°C (79°F). Maximum temperatures in September can reach up to 40°C (104°F), compared to July’s maximum of 33°C (91°F). Moreover, September has a slightly higher amount of precipitation, with 23 mm (0.9 in) falling over three days, while July remains relatively dry with only 6 mm (0.2 in) and no recorded rainy days. Additionally, humidity levels are lower in September at 41%, compared to July’s 57%, contributing to a more comfortable atmosphere during the warmer days. For more specific details about July, you can refer to Sao Jose do Rio Preto weather in July.
In comparing the weather of September and August, September experiences slightly warmer temperatures, ranging from a minimum of 11°C (53°F) to a maximum of 40°C (104°F), while August has cooler temperatures with a minimum of 7°C (45°F) and a maximum of 35°C (96°F). The average temperature in September is also higher at 26°C (79°F), compared to August's 22°C (73°F). Both months have equal precipitation, at 23 mm (0.9 in), but September sees rainfall spread over three days, while August has it over just two days. Additionally, humidity is lower in September at 41%, compared to August's 48%, leading to a typically drier feeling in the air. For a closer look at August weather in this region, visit Sao Jose do Rio Preto weather in August.
September and October in Sao Jose do Rio Preto exhibit some notable differences in weather patterns. September tends to have a wider temperature range, with minimums at 11°C (53°F) and maximums reaching up to 40°C (104°F), while October sees a slightly higher minimum temperature of 15°C (59°F) and a peak at 41°C (105°F). Rainfall dramatically increases in October, with 110 mm (4.3 in) spread across 11 days compared to September's 23 mm (0.9 in) over just 3 days. Humidity levels also shift slightly, being higher in September at 41% compared to October’s 35%. For more details on October's weather, you can visit Sao Jose do Rio Preto weather in October.
In September, the weather in São José do Rio Preto is characterized by warm temperatures, with a minimum of 11°C (53°F) and an average high reaching up to 40°C (104°F). The month sees relatively low precipitation, with just 23 mm (0.9 in) over only 3 days and a humidity level of 41%. In contrast, November experiences a slight increase in minimum temperatures, averaging 13°C (56°F) and a maximum of 36°C (97°F). However, this month is significantly wetter, with a total of 163 mm (6.4 in) of rain falling over 16 days, accompanied by a rise in humidity to 65%. For more details, you can visit Sao Jose do Rio Preto weather in November.
In September, the weather in São José do Rio Preto is characterized by warmer temperatures, with averages around 26°C (79°F) and maximums reaching up to 40°C (104°F). The month sees relatively low precipitation, totaling just 23 mm (0.9 in) over three days, and a comfortable humidity level of 41%. In contrast, December experiences more moderate temperatures, with an average of 25°C (78°F) and maximums of 35°C (95°F). However, it also brings significantly higher precipitation, accumulating 171 mm (6.7 in) across 19 days, and a noticeable increase in humidity, rising to 80%. For more details on December's weather, you can visit Sao Jose do Rio Preto weather in December.
As September arrives in São José do Rio Preto, the weather begins to shift, offering a blend of warmth and mildness. With maximum temperatures reaching the high 30s, it is noticeably warmer than the cooler months of winter, yet not as sweltering as the summer peak. The average temperature settles comfortably at 26°C, presenting an ideal climate for outdoor activities. Rainfall remains low, with just a few intermittent showers throughout the month, contributing to a relatively dry atmosphere with 41% humidity. This transitional period sets the stage for the hotter days ahead, making it a unique time to explore the beauty of the region. For a deeper dive into the overall climate trends, check out Sao Jose do Rio Preto Climate.