Last updated: August 21, 2025
In September, Beira Rio, Brazil, experiences a vibrant climate, marked by a maximum temperature reaching up to 39°C (103°F), while the average settles comfortably at 26°C (80°F). Nights offer a refreshing respite with a minimum temperature of 16°C (61°F). This month sees minimal precipitation, with only 1 mm recorded and 0 rainy days, contributing to a remarkable humidity level of 54%. Ideal for outdoor activities, September in Beira Rio invites residents and visitors alike to enjoy the warm and dry conditions.
In September, Beira Rio experiences a noticeable transition in temperatures as it begins to warm up, with minimums climbing to 16°C (61°F) and average highs reaching up to an impressive 39°C (103°F). This month stands out with an average temperature of 26°C (80°F), hinting at the arrival of spring and a shift towards warmer days. Compared to the cooler winter months of July and August, which see lows of 14°C (57°F), September ushers in a more inviting climate that encourages outdoor activities and exploration. As the month progresses, the increasing warmth foreshadows the hotter months ahead, making it an ideal time to enjoy the vibrant atmosphere of this beautiful Brazilian city.
September in Beira Rio, Brazil, marks a significant shift in the region's precipitation patterns, with only 1 mm (0.0 in) of rain recorded and no rainy days to speak of. This dry spell follows the minimal rainfall observed in the prior months of July and August, both of which also recorded no measurable precipitation. Such dry periods foreshadow a notable increase in rainfall as the year progresses, exemplified by October's resurgence to 26 mm (1.0 in). The transition from the dry months into the wetter season symbolizes a critical change in climatic conditions, leading up to the significantly rainy months ahead, where November and December showcase rainfall amounts of 131 mm (5.2 in) and 117 mm (4.6 in), respectively. This pattern highlights the stark contrast between the parched late winter and the lush arrival of tropical rains, paving the way for a verdant landscape as the year's end approaches.
In Beira Rio, Brazil, September heralds a noticeable shift in humidity levels, dipping to 54%—the lowest point of the year. This decrease follows a trend observed since the peak of 90% in March, gradually declining as the months progressed. As the region transitions from the damp mid-year months of May and June, where humidity rests in the low seventies, to the drier atmosphere of early fall, residents and visitors alike can enjoy a more comfortable climate. This seasonal shift not only enhances outdoor activities but also sets the stage for the gradual drying that continues into the months ahead, with October reaching a refreshing 46% humidity.
In September, Beira Rio, Brazil, experiences a UV Index of 13, categorizing it as extreme with a burn time of just 10 minutes. This slight decrease from the previous month's UV Index of 12 reflects a consistent trend throughout the year, where high UV levels dominate, particularly from January to April, consistently peaking at 15. As the seasons transition, while the intensity remains formidable, September marks a gentle shift towards slightly lower UV exposure, yet caution remains essential. For those planning outdoor activities, it's vital to stay informed about the Beira Rio UV Index to protect against the sun's harmful effects.
UV Risk Categories
As September unfolds in Beira Rio, Brazil, the sun continues to shine brightly, contributing a remarkable 338 hours of sunlight to its residents. This month is a subtle transition, following August's peak of 340 hours. The trend reveals a steady increase in sunshine hours as the year progresses, with May leading the charge at 328 hours and June closely behind. In fact, the overall progression suggests that after a gradual climb from winter's shorter days, the summer months promise even more sunlight, paving the way for the year's peak in October with 348 hours. Such vibrant daylight offers the perfect backdrop for outdoor activities and community gatherings, making this time of year particularly cherished in Beira Rio.
In Beira Rio, Brazil, September emerges as a standout month for sunny weather, boasting an impressive 81% chance of sunshine. This marks a notable increase from the preceding months, showcasing a trend towards brighter days as the year transitions from winter to spring. Following a string of relatively lower probabilities in the earlier months, such as 21% in February and 35% in April, September’s sunny outlook offers a refreshing respite. As the year progresses, the chances of clear skies peak in this vibrant month, promising ample opportunities for outdoor activities and enjoyment of the beautiful Brazilian landscape.
In Beira Rio, Brazil, the rhythm of daylight highlights a fascinating seasonal pattern. After a stretch of eleven hours of daylight from April to August, September marks a delightful shift, returning to a full twelve hours of sunlight, reminiscent of the summer months of January through March. This restoration of longer days is a gentle reminder of nature’s cyclical beauty, as the daylight begins to linger once more, foreshadowing the consistent brightness that continues through the end of the year. With October and November following closely behind, maintaining that twelve-hour daylight duration, Beira Rio embraces a harmonized balance of light that enhances its vibrant culture and lush landscapes.
As September unfolds in Beira Rio, Brazil, the gentle whispers of the wind reveal an interesting trend in the region's breeze patterns. With an average wind speed of 2.7 m/s (6 mph), September marks a peak following a progressive increase from the calmer days of winter. This uptick is noticeable when compared to the previous months, notably the transition from August, which averaged 3.0 m/s (7 mph), providing a solid foundation for the refreshing air typical of late winter and early spring. As the cool winds continue through the month, there's a subtle hint of the warmth to come, mirroring the gradual shift in seasons. Indeed, Beira Rio's winds tell a story of change that is both invigorating and refreshing, as the city prepares to embrace the blooming energy of spring.
Weather in Beira Rio varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Beira Rio, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January present distinct weather patterns, with September generally being drier and warmer. In September, temperatures range from a minimum of 16°C (61°F) to a maximum of 39°C (103°F), with an average of 26°C (80°F) and only 1 mm of precipitation over no rainy days. In contrast, January features milder temperatures with a minimum of 20°C (67°F) and a maximum of 37°C (100°F), an average temperature of 28°C (82°F), and significantly higher rainfall totaling 30 mm (1.2 in) across three days. Additionally, January experiences increased humidity at 78%, compared to September's 54%. For more detailed information, you can check Beira Rio weather in January.
In comparing September and February weather, September boasts a warm climate with temperatures ranging from a minimum of 16°C (61°F) to a maximum of 39°C (103°F) and an average of 26°C (80°F). It is notably dry, with only 1 mm of precipitation and no rainy days. In contrast, February experiences slightly higher minimum temperatures at 20°C (68°F) and averages 27°C (81°F), but also sees a significant increase in rainfall, totaling 82 mm (3.2 in) over about 10 rainy days, resulting in higher humidity levels at 85%. For more detailed information on February's weather conditions, visit Beira Rio weather in February.
September and March present contrasting weather conditions. In September, temperatures range from a minimum of 16°C (61°F) to a maximum of 39°C (103°F), with a comfortable average of 26°C (80°F) and minimal precipitation of just 1 mm over the month, resulting in low humidity at 54%. In contrast, March experiences slightly higher temperatures, with a minimum of 18°C (65°F) and a maximum of 37°C (100°F), averaging around 27°C (81°F). However, March is much wetter, receiving 71 mm (2.8 in) of rain over seven days, which significantly raises humidity levels to 90%. For more detailed information, you can check Beira Rio weather in March.
In September, the weather features a range of temperatures with a minimum of 16°C (61°F) and a maximum soaring up to 39°C (103°F), while maintaining an average of 26°C (80°F). This month is characterized by very low precipitation, with only 1 mm (0.0 in) recorded over no rainy days, resulting in a humidity level of 54%. In contrast, April offers a slightly warmer minimum temperature of 19°C (66°F) and a maximum of 36°C (97°F), with a consistent average of 27°C (80°F). However, April experiences significantly more rain, accumulating 37 mm (1.5 in) over four rainy days, which leads to a much higher humidity level of 84%. For more detailed insights about the weather during this time, you can check Beira Rio weather in April.
In September, the weather is characterized by warm temperatures, with a minimum of 16°C (61°F) and an average high reaching up to 39°C (103°F), while precipitation is almost non-existent. The humidity level stands at a moderate 54%, contributing to a comfortable heat. In contrast, May experiences slightly cooler temperatures, with a minimum of 15°C (58°F) and a maximum reaching 37°C (99°F). This month sees a bit more precipitation, about 3 mm (0.1 in) over a single day, coupled with higher humidity at 73%, which can create a more muggy atmosphere. For more detailed information, you can check the Beira Rio weather in May.
In comparing the weather of September and June, we find that September tends to be slightly warmer, with average temperatures reaching 26°C (80°F) and maximums of 39°C (103°F), while June has a slightly cooler average temperature of 25°C (76°F) and a maximum of 35°C (96°F). Both months experience minimal precipitation, with only 1 mm recorded and no rainy days in either month. However, humidity levels differ, with June exhibiting higher humidity at 71%, compared to September's 54%. For a closer look at the June weather specifics, check Beira Rio weather in June.
In comparing the weather between September and July, September experiences slightly higher temperatures, with a minimum of 16°C (61°F), an average of 26°C (80°F), and a maximum of 39°C (103°F). In contrast, July has a minimum of 14°C (57°F), an average of 24°C (75°F), and a maximum of 35°C (95°F). While both months have negligible precipitation and humidity levels, July is marked by a higher humidity at 66%, compared to September's 54%. For a more detailed look at the weather in the earlier month, you can refer to Beira Rio weather in July.
In comparison to August, September experiences slightly warmer temperatures, with average highs reaching up to 39°C (103°F) compared to August's maximum of 36°C (97°F). The minimum temperatures also reflect a warming trend, with September starting at 16°C (61°F), while August begins at 14°C (58°F). Both months see minimal precipitation, with only 1 mm (0.0 in) recorded and no rainy days. However, September has lower humidity at 54%, compared to August's 60%, creating a drier feel despite the higher temperatures. For more detailed information, you can check the Beira Rio weather in August.
In September, the weather is generally warm with average temperatures around 26°C (80°F) and a comfortable minimum of 16°C (61°F). With no recorded precipitation and a humidity level of 54%, the month feels fairly dry. In contrast, October experiences a slight increase in temperature, with an average of 28°C (83°F) and a minimum of 18°C (65°F). However, the month also sees more rain, accumulating 26 mm (1.0 in) over three days, and has lower humidity at 46%. For a detailed overview of the weather dynamics in October, you can check Beira Rio weather in October.
September and November exhibit contrasting weather patterns, showcasing the transition from late summer to early fall. In September, temperatures range from a mild 16°C (61°F) to a peak of 39°C (103°F), with minimal precipitation and an average humidity of 54%. This makes it a predominantly dry month, characterized by sunny days. In contrast, November brings slightly higher minimum temperatures of 19°C (66°F) and averages a comfortable 27°C (81°F), but experiences significantly increased rainfall, with 131 mm (5.2 in) over 9 days, leading to lower humidity levels of 42%. For more detailed insights into November's climate, you can check out Beira Rio weather in November.
In September, the weather features a warm average temperature of 26°C (80°F) and reaches highs of up to 39°C (103°F), with minimal precipitation of just 1 mm and a humidity level of 54%. In contrast, December brings slightly warmer nights with a minimum temperature of 18°C (64°F) and an average of 27°C (81°F), but it is much wetter, receiving 117 mm of rainfall over 9 days and slightly lower humidity at 52%. For more details on December weather, you can check Beira Rio weather in December.
As September unfolds in Beira Rio, it offers a remarkable transition from the more humid months of the year. With warm average temperatures and virtually no precipitation, this month stands out for its dry conditions and comfortable atmosphere, making it ideal for outdoor activities. The blend of moderate humidity and warm days creates a unique climate that is distinctly different from the rainier seasons surrounding it. For more detailed insights into the weather patterns you can expect, explore the full Beira Rio Climate information.