Last updated: August 21, 2025
September in São João del Rei, Brazil showcases a delightful transition into spring, characterized by a maximum temperature that can reach an exhilarating 33°C (92°F) and a comfortable average of 21°C (69°F). While the nights may cool down to a refreshing 10°C (50°F), the month brings an average precipitation of 37 mm (1.4 in), falling over 4 days. With humidity levels comfortably resting at 63%, the weather creates an inviting atmosphere for both locals and visitors alike, making it an ideal time for exploring the vibrant culture and lush landscapes of this historic city.
In September, São João del Rei experiences a transition into warmer temperatures that hint at the upcoming summer months. With a minimum temperature of 10°C (50°F) and a pleasant average of 21°C (69°F), the weather provides a comfortable backdrop for exploration. As the month progresses, daytime highs can soar up to 33°C (92°F), showcasing a notable shift from the cooler, wintery temperatures of the previous months. This gradual warming trend not only invites outdoor activities but also sets the stage for the vibrant festivities that are characteristic of this charming Brazilian city.
In September, Sao Joao del Rei experiences a noticeable uptick in rainfall, with 37 mm (1.4 in) recorded over four days of precipitation. This marks a modest increase compared to the preceding month, August, which had only 21 mm (0.8 in) spread over three days. As the dry winter months recede, September's rainfall sets the stage for October's more substantial downpour, where precipitation typically escalates to 109 mm (4.3 in). The growing trend of precipitation not only brings a refreshing change after the parched winter period but also signals the transition into a wetter season ahead, with the promise of abundant rain and lush greenery on the horizon.
September in São João del Rei marks a significant drop in humidity, with levels reaching a comfortable 63%. This shift is part of a broader trend as the year progresses; following the peak humidity months of January through March, which see figures exceeding 85%, the air becomes noticeably drier. The transition into September signals the beginning of a drier season, culminating in October's low of 48%. As the year unfolds, the humidity oscillates, offering residents and visitors alike a refreshing reprieve in the early fall, setting a pleasant tone for outdoor explorations and activities.
In September, Sao Joao del Rei experiences a UV Index of 12, placing it back into the extreme exposure category with a rapid burn time of just 10 minutes. This marks a return to more intense sun conditions following the relative drop in UV levels during the cooler winter months. The trend shows a cyclical pattern: after peaking at a staggering UV Index of 17 in January, levels gradually decline until May, before climbing back again as spring approaches. With the arrival of September, residents and visitors alike should remain vigilant about sun protection, as the sun's intensity persists. For detailed UV index data throughout the year, check out Sao Joao del Rei UV Index.
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September in São João del Rei, Brazil, is a radiant month, basking in 310 hours of sunshine. This delightful stretch of brightness marks it as one of the sunniest times of the year, trailing only behind the vibrant months of July and March. The trend of increasing daylight continues from the more moderate sunlight of winter, gradually paving the way for warmer days. With sunshine welcoming the beginning of spring, September invites locals and visitors alike to indulge in the scenic beauty and cultural richness of this charming city, making it an ideal time for exploration and fascination. As the sun shines brightly, the town comes alive, celebrating the joy of longer days.
In Sao Joao del Rei, September heralds a transition towards sunnier days, boasting a 55% chance of sunshine. This marks a delightful peak following a series of warmer months, where the likelihood of sun significantly increases from the cooler, rainier season early in the year. The trend is clear: after the high of 80% in July and a solid 60% in August, September retains a substantial fraction of sunny weather, setting the stage for pleasant outdoor activities. As the month progresses, residents and visitors can expect a wonderful blend of warmth and sunshine, making it an attractive time to explore this charming Brazilian town.
As the seasons shift in São João del Rei, Brazil, September brings a subtle return to longer days, offering approximately 11 hours of daylight. This marks a continuation of the increasing light that began in August, following the more abbreviated daylight of winter months like June and July, which each provide just 10 hours. As the year progresses toward its peak luminosity in December, where daylight reaches a vibrant 13 hours, the gradual lengthening observed in September hints at the delightful transition into the warmer months. This rhythmic pattern of daylight not only influences daily life but also beautifully mirrors the changing seasons in this charming Brazilian town.
As September arrives in São João del Rei, Brazil, the gentle breezes begin to pick up, with average wind speeds reaching 3.0 m/s (7 mph). This marks a noticeable shift from the more tranquil summer months, where wind speeds lingered between 2.1 to 2.5 m/s. The transition into early autumn not only ushers in slightly stronger gusts but also sets the stage for a brisker October, which boasts an average wind speed of 3.3 m/s. The trend indicates a gradual increase in wind intensity as the year progresses, peaking in the fall before mellowing again towards the year's end. This evolving landscape of wind not only enhances the charm of the region but also creates a refreshing atmosphere for locals and visitors alike.
Weather in Sao Joao del Rei varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Sao Joao del Rei, focusing on differences in temperature, rainfall, humidity, and UV levels.
In comparing the weather of September and January, we see significant differences in temperature and precipitation. September typically experiences milder temperatures, with a minimum of 10°C (50°F), an average of 21°C (69°F), and a maximum of 33°C (92°F). The month is relatively dry, with only 37 mm of precipitation over about 4 days and humidity levels around 63%. In contrast, January is warmer overall, with minimum temperatures of 16°C (62°F), an average of 23°C (73°F), and a maximum reaching 31°C (89°F). However, it is also much wetter, receiving 122 mm of rain over approximately 14 days and higher humidity at 83%. For more specific weather details in January, check out Sao Joao del Rei weather in January.
When comparing the weather in September and February, notable differences emerge. September typically experiences milder temperatures with a minimum of 10°C and an average of 21°C, while February has a higher minimum of 15°C and an average of 22°C. Both months can reach a maximum temperature of 33°C, but February is characterized by significantly increased precipitation of 163 mm over 17 days, compared to September's milder rainfall of 37 mm over just 4 days. Additionally, humidity levels rise in February to 85%, compared to September's 63%. For more detailed information, you can check this link: Sao Joao del Rei weather in February.
In comparing the weather between September and March, it's clear that both months have their unique characteristics. September sees a range of temperatures from a cool 10°C (50°F) at night to a warm average of 21°C (69°F), peaking at 33°C (92°F) during the day. With only 37 mm (1.4 in) of precipitation spread over just 4 days, this month maintains a moderate humidity level of 63%.
In contrast, March features slightly warmer temperatures, with a minimum of 12°C (55°F), an average of 22°C (72°F), and a maximum of 31°C (88°F). However, it experiences significantly higher rainfall, with 102 mm (4.0 in) occurring over 15 days, leading to increased humidity at 87%. For more detailed information about March weather, you can check Sao Joao del Rei weather in March.
When comparing the weather in September and April, we see some notable differences. September features a wider temperature range, with minimums of 10°C (50°F) and maximums reaching up to 33°C (92°F), resulting in an average of 21°C (69°F). In contrast, April maintains a slightly cooler average temperature of 20°C (69°F), with maximums peaking at 30°C (86°F) and minimums remaining the same at 10°C (50°F). Precipitation is also more pronounced in April, with 42 mm (1.7 in) over 7 days compared to September's 37 mm (1.4 in) across just 4 days, contributing to its higher humidity of 86% versus 63% in September. For a closer look at the specifics, check out Sao Joao del Rei weather in April.
In comparing the weather of September and May, September generally showcases a wider temperature range, with minimums around 10°C (50°F) and maximums reaching up to 33°C (92°F), leading to a pleasant average of 21°C (69°F). Meanwhile, May's temperatures are cooler, with a minimum of 5°C (42°F) and a maximum of 28°C (83°F), averaging at 18°C (65°F). Additionally, September experiences slightly more precipitation—37 mm (1.4 in) over 4 days—compared to May's 25 mm (1.0 in) over the same number of days. However, May tends to be more humid, with levels around 82%, contrasted with September's 63%. For more details, you can check Sao Joao del Rei weather in May.
When comparing the weather in September and June, September generally presents warmer temperatures, with a minimum of 10°C (50°F) and an average of 21°C (69°F), compared to June's minimum of 8°C (47°F) and average of 18°C (64°F). September also experiences higher maximum temperatures, reaching up to 33°C (92°F), while June peaks at 27°C (81°F). Additionally, September sees slightly more precipitation, with 37 mm (1.4 in) over 4 days, compared to June's 12 mm (0.5 in) over just 2 days. However, June tends to have higher humidity levels at 82%, compared to September's 63%. For more detailed insights, check out Sao Joao del Rei weather in June.
When comparing the weather in September and July, there are notable differences in temperature and humidity. In September, temperatures range from a minimum of 10°C (50°F) to a maximum of 33°C (92°F), with an average of 21°C (69°F). In contrast, July experiences cooler conditions, with temperatures ranging from 5°C (42°F) to 27°C (80°F) and an average of 16°C (62°F). Additionally, September sees more precipitation, with 37 mm (1.4 in) spread over 4 days, whereas July typically has dry weather with only 5 mm (0.2 in) of precipitation over no rainy days. Interestingly, July has a higher humidity level at 77%, compared to September's 63%. For more detailed insights, you can refer to Sao Joao del Rei weather in July.
In comparing the weather between August and September, it’s evident that September tends to be warmer, with average temperatures rising from 17°C (64°F) in August to 21°C (69°F). Additionally, September experiences higher maximum temperatures, reaching up to 33°C (92°F) compared to August's maximum of 30°C (85°F). Precipitation is more frequent in September, with 37 mm (1.4 in) recorded over four days, while August sees only 21 mm (0.8 in) across three days. Interestingly, humidity levels are slightly lower in September at 63%, compared to a more humid August at 72%. For a detailed look at August's weather, visit Sao Joao del Rei weather in August.
In comparing the weather from September to October, we see a slight increase in the minimum temperature, moving from 10°C (50°F) in September to 11°C (52°F) in October. Both months display similar average temperatures of around 21°C (69°F), with October hitting a marginally higher maximum of 34°C (93°F) compared to September's 33°C (92°F). However, October is notably wetter, experiencing a significant increase in precipitation to 109 mm (4.3 in) across 14 days, compared to September's 37 mm (1.4 in) over just 4 days. Additionally, October has a lower humidity level at 48%, leading to a drier feel despite the increased rainfall. For more specific details, you can explore Sao Joao del Rei weather in October.
In comparing the weather of September and November, both months experience similar average temperatures, with minimums around 10°C (50°F) and averages of 21°C (69°F). However, November tends to be slightly cooler, featuring a maximum temperature of 31°C (88°F) compared to September's peak of 33°C (92°F). A significant difference is observed in precipitation levels; September sees only 37 mm (1.4 in) over 4 days, while November experiences considerably higher rainfall at 169 mm (6.7 in) spread over 19 days. This increased precipitation makes November much wetter, although humidity remains relatively consistent at 61% compared to September's 63%. For more detailed insights, you can check the link: Sao Joao del Rei weather in November.
September and December weather in Sao Joao del Rei exhibit notable differences. In September, temperatures range from a minimum of 10°C (50°F) to a maximum of 33°C (92°F), with an average of 21°C (69°F) and relatively low precipitation of 37 mm (1.4 in) over just four days. In contrast, December sees slightly warmer temperatures, with a minimum of 13°C (56°F) and a maximum of 31°C (88°F), maintaining an average of 22°C (71°F). However, December is significantly wetter, receiving 211 mm (8.3 in) of rain across 20 days, accompanied by a slight increase in humidity to 68%. For more detailed information, you can check Sao Joao del Rei weather in December.
As September arrives in Sao Joao del Rei, residents and visitors can expect a notable shift in weather, marked by warmer temperatures that signal the onset of spring. With a comfortable average of 21°C (69°F), this month is a pleasant departure from the cooler winter months, offering a delightful invitation to explore the region. While September does see some rainfall—averaging 37 mm across just a few days—the overall humidity level hovers around 63%, creating a refreshing atmosphere. This combination of warmth and moderate precipitation sets the stage for blossoming nature and vibrant local activity, making it an ideal time to enjoy all that the charming city has to offer. To learn more about how these trends compare to the rest of the year, visit Sao Joao del Rei Climate.