Last updated: August 21, 2025
In September, Vassouras, Brazil, experiences a vibrant transition into spring, characterized by maximum temperatures reaching 36°C (97°F), while the average temperature hovers around a pleasant 22°C (72°F). The mornings can be crisp with minimum temperatures dropping to 12°C (53°F). During this month, the region receives an average of 52 mm (2.0 in) of precipitation, spread across 8 days, contributing to the lush landscape. With a humidity level of 68%, the air feels warm and inviting, making it a delightful time for outdoor activities amid the blooming scenery.
As the vibrant month of September unfolds in Vassouras, Brazil, temperatures begin to reflect the warming transition toward the end of winter. The minimum temperature gently rises to 12°C (53°F), providing a refreshing chill in the mornings, while the average climbs to a comfortable 22°C (72°F). At the other end of the spectrum, September boasts a peak temperature of 36°C (97°F), hinting at the approaching summer warmth. This month serves as a delightful reminder of the seasonal shift, with temperatures steadily escalating, encouraging both locals and visitors to embrace outdoor adventures under the sun as the days grow warmer and brighter. The overall trend in September is one of increasing warmth, where the balance between mildness and heat creates an inviting atmosphere perfect for exploring the lush landscapes of Vassouras.
In September, Vassouras, Brazil, experiences a modest uptick in rainfall, receiving 52 mm (2.0 in) spread over 8 days. This slight increase is reflective of the region's transition from the drier winter months, as it follows the low precipitation recorded in July and June, which saw only 20 mm and 29 mm respectively. While September is still on the lighter side compared to the peak rainy months of November and December, it marks a pivotal moment in the shift toward a wetter season, hinting at the abundant rains that await in the following months. With October poised to bring 117 mm (4.6 in) of rain, September serves as a subtle precursor, reminding us of the dynamic climate patterns at play in this vibrant Brazilian region.
In Vassouras, Brazil, September marks a notable shift in humidity levels, dipping to 68%, the lowest recorded for the year. This decline is part of a broader trend observable from the peak humidity of 85% in January and February to a steady decrease as the year progresses. As the region transitions from the dampness of winter to the drier conditions of spring, September sets the stage for a continuous drop, culminating in the 61% humidity of October. This shift is not just a change in numbers; it reflects the region's evolving climate, creating a more comfortable atmosphere after the oppressive summer heat that characterizes the earlier months.
In September, Vassouras experiences a UV Index of 11, falling into the extreme exposure category with a burn time of just 10 minutes. This marks a shift from the slightly higher index readings of previous months, but caution remains essential as the sun's intensity continues to pose significant risks. It’s noteworthy that throughout the year, Vassouras consistently faces high UV levels, particularly in the first half of the year, where indices peak at 16 in January. As summer approaches, the UV Index typically returns to extreme levels, suggesting that residents and visitors alike should remain vigilant in their sun protection practices during this time in September. For more detailed information, visit the Vassouras UV Index.
UV Risk Categories
As September unfolds in Vassouras, Brazil, residents and visitors alike can revel in the 290 hours of sunshine that grace the skies. This month mirrors the vibrant energy of summer, maintaining a consistent brightness reminiscent of the peak sunlight seen in the earlier months, particularly March and April. Following the slight dips over the winter months, September's sunny days set the stage for a warm transition into spring, reinforcing a trend where the region enjoys an abundance of sunlight. As the days grow longer, Vassouras basks in this golden glow, making it an ideal time for outdoor adventures and cultural explorations. Looking ahead, the balance of bright days and cooler evenings continues to charm, inviting everyone to embrace the warmth of the Brazilian sun.
As September rolls in, the likelihood of sunny weather in Vassouras, Brazil, presents an intriguing transition. Following the peak sunny days of July and August, September offers a decent 42% chance of clear skies, allowing for ample opportunities to enjoy outdoor activities. This figure, while lower than the summer months, reflects a typical pattern where the sunny days gradually decline towards the end of the year, yet still surpasses October's significantly diminished likelihood at just 12%. Embrace the pleasant weather while it lasts, as crisp September days provide a delightful window before the cloudier months of the year take hold.
In Vassouras, Brazil, September marks a transitional period in daylight duration, offering about 11 hours of sunlight each day. As summer wanes, the daylight begins to stabilize after a gradual decline from its peak in January. While the earlier months of the year bask in more than 13 hours of sunlight, daylight hours are more balanced from April through August, fluctuating between 10 to 11 hours. Interestingly, September mirrors August’s daylight offering, emphasizing a moment of consistency before the upcoming shift back towards greater daylight in October and November. This pattern not only highlights the serene rhythm of the seasons in Vassouras but also invites residents and visitors alike to enjoy the warm embrace of early spring days.
As September graces Vassouras, Brazil, the region experiences a subtle yet invigorating shift in the atmosphere, marked by an average wind speed of 2.3 m/s (5 mph). This gentle breeze is a notable increase from the preceding months, showcasing a gradual upward trend that begins in August and continues into October. The summer months typically see lower wind activity, with speeds dipping to around 1.5 m/s (3 mph) in May before steadily climbing back up. By September, as the landscape begins to shift toward the vibrant colors of fall, the refreshing winds sweep across the area, inviting both locals and visitors to enjoy the outdoors. This seasonal gust serves not just as a harbinger of change but as a constant reminder of nature's rhythmic dance throughout the year.
Weather in Vassouras varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Vassouras, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January present contrasting weather patterns. In September, temperatures range from a cool 12°C (53°F) to a warm 36°C (97°F), with an average of 22°C (72°F). Precipitation is relatively low at 52 mm (2.0 in) over about 8 days, and humidity stands at 68%. In stark contrast, January features higher temperatures, with a minimum of 16°C (62°F) and an average of 25°C (78°F), peaking at 35°C (95°F). The month is significantly wetter, receiving 201 mm (7.9 in) of rainfall over 17 days, accompanied by higher humidity at 85%. For a detailed look at January weather, check out this link: Vassouras weather in January.
When comparing the weather in September and February, notable differences emerge. September typically experiences milder temperatures with a minimum of 12°C (53°F) and an average of 22°C (72°F), topping out at a maximum of 36°C (97°F). In contrast, February sees warmer temperatures, with a minimum of 18°C (64°F), an average of 24°C (76°F), and a maximum of 35°C (96°F). Additionally, February is significantly wetter, receiving 243 mm (9.6 in) of precipitation over 20 days, compared to September's 52 mm (2.0 in) over just 8 days. This increase in rainfall also correlates with higher humidity levels in February, averaging 85%, compared to September's 68%. For more detailed information on February weather, you can check Vassouras weather in February.
When comparing the weather in September and March, notable differences emerge. September typically experiences milder temperatures, with a minimum of 12°C (53°F) and an average of 22°C (72°F), while March is slightly warmer, featuring a minimum of 14°C (58°F) and an average of 24°C (76°F). Precipitation also varies significantly; September has around 52 mm (2.0 in) over 8 days, whereas March witnesses a much wetter pattern with 177 mm (7.0 in) spread over 19 days. Additionally, humidity levels are higher in March at 86%, compared to 68% in September. For a deeper insight into March weather, you can visit Vassouras weather in March.
When comparing the weather in September and April, both months exhibit similar average temperatures, sitting around 22°C (72°F). However, September tends to be hotter overall, with maximum temperatures reaching up to 36°C (97°F), compared to April's peak of 34°C (93°F). Precipitation is also notably different; September experiences 52 mm (2.0 in) of rainfall over 8 days, while April is wetter, with 76 mm (3.0 in) spread across 12 days. Furthermore, April has higher humidity levels at 83%, compared to September's 68%. For more detailed information, you can check Vassouras weather in April.
When comparing the weather in September and May, September tends to be warmer overall, with average temperatures around 22°C (72°F) compared to May's 20°C (68°F). The maximum temperatures in September can reach as high as 36°C (97°F), significantly warmer than May's peak of 31°C (88°F). However, May experiences slightly higher humidity at 81% compared to September's 68%, which can make it feel a bit more uncomfortable despite the lower temperatures. Rainfall is also notable, with both months receiving about the same number of rainy days (8), but May records a slightly higher total precipitation at 59 mm (2.3 in) compared to September's 52 mm (2.0 in). For a detailed outlook on the weather specifics in May, you can visit Vassouras weather in May.
September generally experiences warmer temperatures compared to June, with minimums reaching 12°C (53°F) and maximums soaring up to 36°C (97°F), while June's temperatures range from a minimum of 10°C (50°F) to a maximum of 31°C (89°F). The average temperature in September is also slightly higher at 22°C (72°F) compared to June's average of 20°C (68°F). In terms of precipitation, September sees more rainfall with 52 mm (2.0 in) over about 8 days, whereas June has less at 29 mm (1.1 in) over 7 days. Additionally, humidity levels in June are higher at 80%, compared to September's 68%. For more detailed insights into June's climate, you can visit Vassouras weather in June.
In comparing the weather of September and July, September exhibits a markedly warmer climate, with average temperatures reaching 22°C (72°F) and highs soaring up to 36°C (97°F). In contrast, July has a cooler ambiance, featuring an average temperature of 18°C (65°F) and maximums of 30°C (87°F). While September experiences more rainfall, totaling 52 mm (2.0 in) over about 8 days, July has a significantly drier profile with only 20 mm (0.8 in) across 5 days. Humidity levels are slightly lower in September at 68%, compared to 76% in July, suggesting a more comfortable feel despite the higher temperatures. For more detailed insights on July weather, visit Vassouras weather in July.
September generally experiences warmer weather compared to August, with minimum temperatures rising from 6°C (43°F) in August to 12°C (53°F) in September. The average temperature also sees an increase, from 19°C (66°F) in August to 22°C (72°F) in September, while maximum temperatures can reach up to 36°C (97°F) in September, compared to 33°C (91°F) in August. Precipitation levels are slightly higher in September, with 52 mm (2.0 in) of rain over 8 days, compared to 48 mm (1.9 in) over 7 days in August. Humidity remains relatively constant, with September at 68% and August slightly higher at 73%. For more detailed information on August weather, you can check Vassouras weather in August.
September and October offer a transition in weather. In September, temperatures range from a pleasant minimum of 12°C (53°F) to a warm maximum of 36°C (97°F), with an average of 22°C (72°F). The month experiences around 52 mm (2.0 in) of precipitation over 8 days, while humidity levels remain relatively high at 68%. In contrast, October sees a slight increase in temperatures, with a minimum of 13°C (57°F) and a maximum that can reach up to 37°C (100°F), while still maintaining the same average of 22°C (73°F). However, October is significantly wetter, with a total of 117 mm (4.6 in) of rainfall spread across 17 days, and the humidity drops to 61%. For more detailed insights, you can check Vassouras weather in October.
In September, the weather is generally warm, with temperatures ranging from a mild 12°C (53°F) at night to a high of 36°C (97°F) during the day, and an average temperature of 22°C (72°F). September sees relatively low rainfall, totaling 52 mm (2.0 in) over about 8 days, with humidity at 68%. In contrast, November experiences similar temperature ranges, with a minimum of 12°C (53°F) and a maximum of 35°C (95°F), but it is significantly wetter, receiving 205 mm (8.1 in) of precipitation over 19 days. The humidity also rises slightly to 72%, making November feel more humid compared to September. For more details, check out Vassouras weather in November.
In September, the weather is warm with average temperatures ranging from a minimum of 12°C (53°F) to a maximum of 36°C (97°F), and it typically experiences around 52 mm of precipitation over about 8 days. Humidity levels are moderate at 68%. In contrast, December brings slightly higher temperatures, with a minimum of 14°C (58°F) and an average of 24°C (75°F), but it also sees increased rainfall, averaging 228 mm over 23 days and a higher humidity of 75%. For those interested in more details about December weather, you can check out Vassouras weather in December.
As September unfolds in Vassouras, the weather transitions into a delightful balance of warm days and cooler evenings, creating a unique charm distinct from other months. The maximum temperatures can peak at a toasty 36°C (97°F), inviting outdoor activities, while the average temperature provides a comfortable 22°C (72°F). With 52 mm of precipitation spread over 8 days, September typically experiences a mix of crisp, humid days, making it a refreshing shift towards the more vibrant spring season. This blend of humidity at 68% and fluctuating temperatures sets September apart, especially when compared to the more extreme conditions found at either end of the year. For a deeper look into Vassouras' climate trends, explore Vassouras Climate.