Last updated: August 21, 2025
In September, Diamantina, Brazil, experiences a delightful transition into spring, characterized by warm temperatures and moderate rainfall. Daily highs can reach up to 34°C (93°F), while the average temperature sits comfortably around 20°C (69°F). Nights can be cooler, dipping to a refreshing 9°C (48°F). The month sees a modest precipitation total of 28 mm (1.1 in), spread over just three days, contributing to the area's vibrant flora. With a humidity level of 61%, the atmosphere is pleasantly warm, making September an ideal time to explore the scenic beauty of this historic town.
In Diamantina, Brazil, September heralds a notable transition in weather as the temperatures begin to rise. With a minimum of 9°C (48°F) and a maximum reaching 34°C (93°F), this month marks a departure from the cooler depths of winter, revealing an average temperature of 20°C (69°F). This period stands out as the climate warms up, paving the way for the hotter months ahead. Compared to August’s lower averages, September showcases a significant increase in warmth, showcasing the region's shift towards a more inviting atmosphere. As the days lengthen and the sun grows stronger, visitors can enjoy the vibrant surroundings of Diamantina, all while soaking up the pleasant warmth that September brings.
In September, Diamantina experiences a noticeable shift as the drier winter months give way to the budding rains of spring. With 28 mm (1.1 in) of precipitation over just 3 days, it marks a gradual increase in moisture compared to the preceding months, transitioning away from the minimal rainfall seen in July and August. This small uptick is a precursor to the significantly wetter months ahead, such as October and November, which can bring upwards of 129 mm and 202 mm respectively. As the landscape begins to awaken from its dry spell, September’s slight showers provide a promising glimpse of the rejuvenation that the upcoming seasons will offer.
As September arrives in Diamantina, Brazil, the humidity begins to dip, reflecting a notable trend as the year progresses. With a comfortable 61% humidity, September marks a significant decline from the peak of 86% in March. This gradual decrease in moisture levels, especially following the summer months with their higher humidity, creates a more pleasant atmosphere. It suggests that the transition into the drier months has begun, paving the way for October’s even lower humidity at 47%. Residents and visitors alike can enjoy the refreshing change, making September an ideal time to explore the region's natural beauty and vibrant culture.
In September, Diamantina, Brazil, experiences a UV Index of 13, categorized as extreme, which means sun safety precautions are essential as the burn time is just 10 minutes. This month's levels reflect a notable consistency with the preceding months, which typically see similarly high indexes in the extreme range from January through April and then again in October and November. The UV Index typically begins to decline in the following months of May and June, where it dips to very high levels, providing a brief respite before returning to extreme levels as the year progresses. It's crucial for residents and visitors to stay informed about the UV Index to protect against harmful sun exposure. For more detailed insights, visit Diamantina UV Index.
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In September, the sun shines generously over Diamantina, Brazil, boasting an impressive 323 hours of sunlight, making it one of the sunniest months of the year. This peak in sunshine hours follows a slight dip in November with only 262 hours and a steady climb throughout the winter months. Remarkably, this vibrant month caps off a summer of sunlight, where July and August also delivered 312 hours each. As the days grow longer and the golden light bathes the landscape, September emerges as a radiant highlight, seamlessly blending the warmth of spring with the promise of summer ahead.
In Diamantina, Brazil, September boasts a promising 70% chance of sunny weather, positioning it among the most luminous months of the year. This delightful trend follows a peak in sunshine during the mid-year, with July and June showing high probabilities of clear skies at 72% and 62%, respectively. As summer approaches, the likelihood of sun diminishes in the latter part of the year, with October and November dropping to 26% and 15%. Thus, September is an ideal time to enjoy the outdoors with a warm embrace of sunshine before the skies cloud over.
In September, Diamantina, Brazil enjoys a consistent daylight duration of 11 hours, maintaining the trend established in the previous months of late winter and early spring. As the year progresses, daylight begins its gradual ascent, with October expected to bring an extra hour of sunlight, reaching 12 hours. This seasonal shift highlights a comforting predictability—throughout the year, daylight hours fluctuate between 11 to 13 hours, with the longest days arriving in the summer months of January and December. Transitioning from the cooler months, September serves as a gentle reminder that brighter days are soon to come, as daylight hours slowly inch upward towards the festive warmth of the approaching summer.
As September arrives in Diamantina, Brazil, the winds noticeably pick up, with an average speed of 2.4 m/s (5 mph). This month marks a slight decrease from the previous August's peak of 2.5 m/s (6 mph), suggesting a transition as the season shifts. Throughout the year, a gentle breeze tends to dominate, with January to June showcasing consistently low speeds between 1.7 m/s to 2.0 m/s. The winds finally gather momentum in mid-year, reaching their apex in August before tapering slightly in September. This seasonal rhythm hints at a delicate balance, where the calm is beautifully interspersed with moments of invigorating freshness, inviting residents and visitors alike to enjoy the enchanting embrace of the Diamantina winds.
Weather in Diamantina varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Diamantina, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January exhibit distinct weather patterns. In September, temperatures range from a cooler minimum of 9°C (48°F) to a warm maximum of 34°C (93°F), with an average of 20°C (69°F). The month is relatively dry, receiving only 28 mm (1.1 in) of precipitation over about 3 days, accompanied by a humidity level of 61%. In contrast, January features milder conditions, with minimum temperatures around 14°C (58°F) and a higher average of 22°C (72°F), peaking at 33°C (91°F). It is considerably wetter, experiencing 116 mm (4.6 in) of rainfall over 9 days, and the humidity climbs to 80%. For more detailed information, you can visit Diamantina weather in January.
In September, the weather features a more moderate temperature range, with minimums of 9°C (48°F) and maximums reaching up to 34°C (93°F), resulting in a pleasant average of 20°C (69°F). The month experiences relatively low precipitation at 28 mm (1.1 in) over just three days, along with a humidity level of 61%. In contrast, February brings warmer conditions, with minimums starting at 16°C (60°F) and maximums peaking at 33°C (91°F), leading to an average temperature of 22°C (71°F). However, February is notably wetter, with 224 mm (8.8 in) of rainfall spread over 18 days and higher humidity at 84%. For more detailed insights into February weather, you can visit Diamantina weather in February.
In September, the weather tends to be warmer during the day, with average temperatures around 20°C (69°F) and maximum highs reaching up to 34°C (93°F). The month experiences relatively low precipitation, averaging just 28 mm (1.1 in) over about three days and a humidity level of 61%. In contrast, March brings slightly cooler minimum temperatures at 14°C (57°F) and an average of 21°C (71°F), but it also sees a higher maximum temperature of 31°C (89°F). However, March is significantly wetter, with total precipitation reaching 138 mm (5.4 in) over approximately 14 days, accompanied by increased humidity at 86%. For more detailed insights, you can check Diamantina weather in March.
In September, the weather features a wider temperature range with minimums dipping to 9°C (48°F) and maximums reaching up to 34°C (93°F), while the average temperature hovers around a comfortable 20°C (69°F). This month experiences relatively low precipitation at 28 mm (1.1 in) over just 3 days, and humidity levels are around 61%.
Conversely, April shows milder temperatures with a minimum of 12°C (53°F) and a maximum of 30°C (86°F), maintaining the same average of 20°C (69°F). However, this month is significantly wetter, with 67 mm (2.6 in) of precipitation spread over 12 days, resulting in higher humidity levels of 83%. For those interested in exploring the specifics, you can find more information at Diamantina weather in April.
September and May present contrasting weather patterns. In September, temperatures range from a mild 9°C (48°F) to a warm 34°C (93°F), with an average of 20°C (69°F) and relatively low precipitation of 28 mm (1.1 in) over just 3 days. The humidity is moderate at 61%. In contrast, May features cooler temperatures, with a minimum of 4°C (39°F) and a maximum of 28°C (84°F), averaging 18°C (65°F). The month is wetter, experiencing more precipitation at 36 mm (1.4 in) across 7 days and higher humidity at 78%. For more detailed information, you can check Diamantina weather in May.
In comparing the weather between September and June, we see notable differences in temperature and humidity. September features a wider temperature range, with minimums of 9°C (48°F) and maximums reaching up to 34°C (93°F), averaging around 20°C (69°F). In contrast, June has a cooler average temperature of 18°C (64°F) and maximums capped at 28°C (83°F), while also maintaining the same minimum temperature of 9°C (48°F). Additionally, September experiences less rainfall, with only 28 mm (1.1 in) over three days, compared to June’s 9 mm (0.4 in) over just two days. The humidity is also lower in September, recorded at 61%, making it feel less muggy than June's higher 77%. For more detailed information, check out Diamantina weather in June.
In comparing the weather of September and July, September tends to be warmer overall, with average temperatures reaching 20°C (69°F) compared to July's cooler average of 17°C (62°F). Notably, September experiences a higher maximum temperature of 34°C (93°F) versus July's maximum of 29°C (84°F). Furthermore, September has slightly more precipitation, with 28 mm (1.1 in) falling over three days, compared to July's minimal 6 mm (0.2 in) over just one day. However, July has a higher humidity level at 74%, while September's humidity averages 61%. For a more detailed look at July weather specifics, you can visit Diamantina weather in July.
In comparing the weather between September and August, September exhibits slightly warmer temperatures, with a minimum of 9°C (48°F) and a maximum of 34°C (93°F), while August's temperatures range from a minimum of 6°C (43°F) to a maximum of 30°C (87°F). The average temperature for September is also higher at 20°C (69°F) compared to August's average of 18°C (64°F). Additionally, September experiences more rainfall, with 28 mm (1.1 in) over three days, in contrast to August’s 14 mm (0.6 in) spread over four days. Humidity levels are notably lower in September at 61%, compared to August's 69%. For further details on August weather, you can visit Diamantina weather in August.
In September, temperatures ranged from a minimum of 9°C (48°F) to a maximum of 34°C (93°F), with an average temperature of 20°C (69°F). The month saw relatively low precipitation, totaling 28 mm (1.1 in) over just three days, and humidity levels averaged 61%. In contrast, October experiences slightly warmer temperatures, with a minimum of 14°C (57°F) and a maximum of 35°C (94°F), and an average temperature of 22°C (72°F). However, the month is significantly wetter, with precipitation reaching 129 mm (5.1 in) over 15 days, alongside lower humidity levels at 47%. For more detailed insights, check out Diamantina weather in October.
September weather features a broader temperature range, with minimums dipping to 9°C (48°F) and maximums reaching up to 34°C (93°F), resulting in an average of 20°C (69°F). In contrast, November presents slightly milder temperatures, with minimums of 14°C (57°F) and maximums of 33°C (91°F), averaging at 21°C (70°F). However, November experiences significantly higher precipitation, totaling 202 mm (7.9 in) over 19 days, compared to just 28 mm (1.1 in) across 3 days in September. Humidity levels also differ; September is more humid at 61%, while November shows a lower humidity level of 54%. For more details, visit Diamantina weather in November.
When comparing the weather in September and December, notable differences emerge. September tends to be warmer with temperatures ranging from a minimum of 9°C (48°F) to a maximum of 34°C (93°F) and an average of 20°C (69°F). In contrast, December features higher minimum and average temperatures, with values starting at 13°C (57°F) and reaching an average of 21°C (71°F), although the maximum temperature is slightly lower at 32°C (89°F).
Additionally, December is significantly wetter, with 234 mm (9.2 in) of precipitation over 19 days, compared to just 28 mm (1.1 in) over 3 days in September. Humidity levels remain relatively consistent, around 61% in September and 60% in December. For more detailed information, you can check Diamantina weather in December.
As September unfolds in Diamantina, the weather becomes a delightful transition from the cooler months of winter to the warmth of spring. With maximum temperatures reaching a balmy 34°C (93°F) and an average of 20°C (69°F), the month offers a perfect balance of warm days and cool nights, unlike the more extreme temperatures experienced in the summer. Rainfall is relatively modest with only a few days of precipitation, contributing to a pleasant humidity level of 61% that keeps the air fresh. This makes September an ideal time for outdoor activities and exploration in this charming city. For a deeper understanding of what to expect throughout the year, check out Diamantina Climate.