Last updated: August 21, 2025
September in Barretos, Brazil offers a warm and inviting climate, with maximum temperatures soaring up to 39°C (103°F), while the average settles comfortably around 27°C (80°F). The nights cool down to a minimum of 12°C (54°F), providing a refreshing respite. With only 23 mm (0.9 in) of rainfall over a mere 2 days, the month remains predominantly dry. Humidity levels are relatively low at 41%, making it an ideal time to enjoy the outdoors in this vibrant region.
In September, Barretos, Brazil, transitions into a warmer phase, showcasing a remarkable increase in temperatures. With minimums reaching 12°C (54°F) and soaring maximums of up to 39°C (103°F), the average temperature settles at a cozy 27°C (80°F). This month marks a significant shift from the cooler winter months, as the lingering chill is replaced by the onset of a more summery vibe. As the weather warms, the days grow longer, providing ample opportunity for outdoor activities under the sunlight, making September an ideal time to experience the vibrant local culture and beautiful landscapes of Barretos.
In September, Barretos, Brazil experiences a modest uptick in precipitation, receiving 23 mm (0.9 in) over two rainy days. This marks a slight increase from the dry months of July and August, where rainfall was minimal at 5 mm (0.2 in) and 14 mm (0.6 in), respectively. While September's precipitation is still relatively low compared to the wetter months that follow, such as October and November, it signals the transition towards the more humid season. As the landscape shifts, the light showers in September serve as a gentle precursor to the more substantial rainfall that characterizes Barretos’ late spring and summer months, setting the stage for a vibrant and lush environment ahead.
In Barretos, Brazil, September marks a notable shift in humidity levels, with the average dropping to a refreshing 41%. This decline is part of a broader trend observed as the year progresses; following the peak humidity levels of 87% in February and 86% in March, the region transitions to drier months. August witnesses a significant drop to 48%, and by September, the atmosphere becomes even more arid, paving the way for the dry season. As the temperatures start to rise in October, humidity falls further to 35%, showcasing a stark contrast to the balmy summer months that precede it. Overall, the humidity levels in Barretos highlight the cyclical nature of the region's climate, where a gradual decrease creates an inviting environment as the year heads into the hotter months.
In September, Barretos experiences a UV Index of 12, falling into the extreme category with a burn time of just 10 minutes. As the month transitions from winter to spring, UV radiation begins to intensify, mirroring the trends observed in previous months. This uptick follows a high summer peak in the middle of the year, where values consistently hover between 9 and 16. It's essential for residents and visitors to remain vigilant, employing sunscreen and protective clothing, especially as the October index rises to 14. For a deeper dive into the changing UV levels throughout the year, check out Barretos UV Index.
UV Risk Categories
As September rolls in Barretos, Brazil, the sunshine is nothing short of spectacular, gracing the region with 318 hours of radiant daylight. This delightful amount of sunshine marks a slight decline from the sunniest month of March but remains consistent with the preceding months, showcasing a trend of abundant sunlight throughout the year. The warm embrace of spring hints at the lush landscapes and vibrant culture that thrive in this sunny atmosphere, with an overall pattern of strong light continuing from the heart of winter through to the onset of spring. As the days grow warmer, Barretos invites both locals and visitors alike to bask in its golden glow, making September a delightful time to experience the beauty of this Brazilian gem.
In Barretos, Brazil, September offers a promising likelihood of sunny weather, with chances reaching 67%. This positions the month favorably in comparison to the earlier months of the year, where sunshine is often less reliable. As the year progresses, a notable trend emerges: the likelihood of sunny days dramatically increases from the overcast winter months of June and July, peaking in July at an impressive 84%. September maintains this sunny momentum, following a strong August at 74%. While October sees a dip to 44%, the sunshine in September is a significant boost before the sky begins to cloud over again, making it an ideal time for outdoor activities and enjoyment of the warm Brazilian sun.
In Barretos, Brazil, the daylight duration exhibits a captivating rhythm throughout the year. As September rolls in, the city enjoys approximately 11 hours of daylight, reflecting a steady trend seen since mid-year. Following the longest days of January and November, which boast 13 hours of sunlight, the duration gradually decreases to a brief low of 10 hours in June. This fluctuation not only highlights the region's seasonal changes but also emphasizes the return to longer days as October approaches, with daylight extending back to 12 hours. Overall, Barretos presents a harmonious balance of sunlight that shapes its vibrant outdoor lifestyle year-round.
As September rolls into Barretos, Brazil, the winds continue to pick up momentum, averaging 2.7 m/s (6 mph), just slightly below the peak observed in August. This month marks a subtle transition as the summer heats linger, with wind speeds gradually increasing through the winter months of July and August, where they reached their highest points. Notably, after the mild breezes of the early months, there is a clear trend of increasing wind strength, peaking as the dry season progresses. By the time October arrives, winds maintain a steady 2.5 m/s, indicating a consistency that characterizes the region’s atmospheric patterns as it shifts towards a cooler season. Overall, September represents a harmonious blend of lingering warmth and refreshing breezes, promising delightful afternoons and a gentle shift in the air.
Weather in Barretos varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Barretos, focusing on differences in temperature, rainfall, humidity, and UV levels.
In September, the weather in Barretos is characterized by warmer temperatures, with averages around 27°C (80°F) and a maximum reaching up to 39°C (103°F). The humidity is moderate at 41%, and precipitation is relatively low, falling on just 2 days and totaling 23 mm (0.9 in). In contrast, January brings a different climate, featuring higher humidity at 85% and significantly more rainfall, with 143 mm (5.6 in) spread across 16 days. Temperatures in January are slightly cooler, with an average of 26°C (78°F) and a maximum of 36°C (97°F). For more details, check out Barretos weather in January.
September and February showcase distinctly different weather patterns. September tends to be warmer, with average temperatures reaching up to 27°C (80°F) and maximums soaring to 39°C (103°F). It experiences minimal rainfall, averaging only 23 mm (0.9 in) over just 2 days, combined with a relatively low humidity level of 41%. In contrast, February has milder temperatures, with an average of 25°C (78°F) and maximums of 36°C (96°F). However, it sees significantly more precipitation, totaling 165 mm (6.5 in) over 17 days, and experiences higher humidity, peaking at 87%. For more detailed insights, visit Barretos weather in February.
In comparing the weather of September and March, September typically offers warmer daytime temperatures, with an average of 27°C (80°F) and maximum highs reaching up to 39°C (103°F). In contrast, March experiences slightly cooler average temperatures of 26°C (79°F), peaking at 35°C (95°F). September is characterized by low humidity at 41% and minimal precipitation, with only 23 mm (0.9 in) falling over just 2 days. On the other hand, March is marked by significantly higher humidity at 86% and increased rainfall, totaling 104 mm (4.1 in) over 13 days. For a detailed look at March weather, you can visit Barretos weather in March.
In comparing the weather between September and April, September typically showcases higher average temperatures, peaking at 39°C (103°F), while April experiences a milder maximum of 34°C (93°F). Humidity levels also differ notably; September has a more comfortable 41%, whereas April's humidity rises to 79%, contributing to a noticeably muggy atmosphere. Precipitation is another significant factor, with September only receiving 23 mm (0.9 in) of rain over just 2 days, in stark contrast to April's 60 mm (2.4 in) spread over 6 days, leading to a wetter month. For more detailed insights on April weather, you can visit Barretos weather in April.
In September, the weather tends to be hotter, with average temperatures reaching 27°C (80°F) and maximums peaking at 39°C (103°F). In contrast, May presents a much cooler climate, with an average temperature of 22°C (72°F) and maximums around 33°C (92°F). While both months experience similar levels of precipitation (23 mm in September and 26 mm in May) over just two days, September's humidity is significantly lower at 41%, compared to May's higher and more humid 68%. For a detailed look at May's weather, you can explore Barretos weather in May.
In comparing the weather between September and June, September tends to be significantly warmer, with average temperatures reaching 27°C (80°F) and maximums soaring up to 39°C (103°F). In contrast, June offers milder temperatures, averaging 22°C (72°F) and peaking at 31°C (89°F). Additionally, September experiences slightly less precipitation, with only 23 mm (0.9 in) over 2 days, while June is drier, showcasing just 3 mm (0.1 in) over a single day. However, humidity levels are notably higher in June at 60%, compared to September's 41%. For a deeper look into the details, you can visit Barretos weather in June.
In comparing the weather between September and July, September presents notably higher temperatures, with a minimum of 12°C (54°F) and an average of 27°C (80°F), soaring up to a maximum of 39°C (103°F). In contrast, July experiences cooler conditions, characterized by a minimum of 4°C (40°F) and an average temperature of 21°C (70°F), peaking at 32°C (90°F). While September sees some precipitation with 23 mm (0.9 in) over 2 days, July remains largely dry, recording only 5 mm (0.2 in) with no rainy days. Additionally, humidity levels are higher in July at 57%, compared to 41% in September. For more detailed information, you can refer to Barretos weather in July.
In September, the weather in Barretos transitions to warmer temperatures, with a minimum of 12°C (54°F), an average of 27°C (80°F), and a maximum reaching up to 39°C (103°F). This marks a noticeable increase from August, where the temperatures ranged from a minimum of 9°C (48°F) to a maximum of 35°C (96°F) and an average of 23°C (74°F). Additionally, September experiences slightly heavier precipitation, totaling 23 mm (0.9 in) over two days, compared to August's 14 mm (0.6 in) over the same number of days. The humidity also shows a decline in September at 41%, down from August's 48%. For more details on August weather, check Barretos weather in August.
In September, the weather features a pleasant average temperature of 27°C (80°F), with minimums of 12°C (54°F) and maximums reaching up to 39°C (103°F). The month experiences low precipitation, totaling just 23 mm (0.9 in) over two days, resulting in a relatively dry atmosphere with a humidity level of 41%.
In contrast, October maintains the same average temperature of 27°C (80°F), but the minimum temperature rises to 16°C (61°F) and the maximum reaches 41°C (105°F). October sees a significant increase in precipitation, with 92 mm (3.6 in) recorded over 12 days, making it much wetter and contributing to a lower humidity level of 35%. For more detailed insights, you can check Barretos weather in October.
In comparing the weather of September and November, we find notable differences in temperature and precipitation. September typically features a broader range of temperatures, with a minimum of 12°C (54°F), an average of 27°C (80°F), and a maximum reaching up to 39°C (103°F). The month experiences relatively low precipitation, averaging just 23 mm (0.9 in) over only 2 days, and a humidity level of 41%. In contrast, November brings slightly warmer conditions, with minimum temperatures rising to 15°C (58°F) and an average of 26°C (79°F), while maximum temperatures remain similar at 38°C (100°F). However, November is significantly wetter, receiving 158 mm (6.2 in) of rain over 16 days, leading to higher humidity levels at 65%. For more details, visit Barretos weather in November.
In September, the weather is generally warm, with average temperatures around 27°C (80°F) and highs reaching up to 39°C (103°F). The month is relatively dry, with only 23 mm (0.9 in) of precipitation occurring over just 2 days, and humidity levels sitting at a comfortable 41%. In contrast, December experiences milder temperatures, with a minimum of 17°C (63°F) and an average of 26°C (78°F). However, it is significantly wetter, with 170 mm (6.7 in) of rainfall over 18 days, resulting in a much higher humidity level of 80%. This notable shift in weather not only affects outdoor activities but also highlights the seasonal changes in the region. For more details on December's climate, visit Barretos weather in December.
September in Barretos marks a significant transition as the weather shifts from the cooler winter months to the warmth of spring. With average temperatures rising to a pleasant 27°C, residents and visitors can enjoy more outdoor activities. The maximum highs can reach up to 39°C, making it one of the warmer months, while the humidity remains relatively low at 41%, allowing for a comfortable atmosphere despite the heat. Although rainfall is minimal, with only two days of precipitation, the month offers a delightful balance of sun and moderate temperatures, setting the stage for the upcoming warmer months. For a detailed overview of how Barretos’ climate evolves, visit Barretos Climate.