September Weather in Corumba, Brazil

Last updated: August 21, 2025

In Corumba, Brazil, September weather showcases a striking contrast, with maximum temperatures soaring to 42°C (108°F) and a comfortable average of 28°C (83°F). The region experiences a notable drop with minimums dipping to 9°C (49°F), providing a unique blend of warmth and coolness. Despite the heat, September witnesses a modest precipitation total of 25 mm (1.0 in) across approximately four rainy days, complemented by relatively low humidity levels at 35%. This capricious climate creates a dynamic atmosphere, appealing to both adventure seekers and those wanting to explore the rich natural beauty of the region.

September Temperature in Corumba

In September, Corumba experiences a remarkable transition as temperatures start to rise, reflecting the advent of spring in Brazil. The month brings minimums around 9°C (49°F), which, while slightly cooler than the peak summer months, quickly give way to averages of 28°C (83°F) and soaring maximums reaching up to 42°C (108°F). This pattern shows a distinct shift from the milder, cooler temperatures of late winter, making it a prime time for those seeking warmth and sunshine. As the month progresses, the heat intensifies, hinting at the upcoming summer season and inviting outdoor adventures amid the vibrant landscapes of Corumba.

September Weather in Corumba: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Corumba, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Corumba, September typically has an average temperature of {2}°C ({3}°F), with highs reaching up to {4}°C ({5}°F) and lows dropping to around {6}°C ({7}°F).
JanFebMarAprMayJunJulAugSepOctNovDec838282807572727682848383
Data source: Temperature data for Corumba generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Corumba

In September, Corumba experiences a notable consistency in precipitation, with 25 mm (1.0 in) recorded over four days of rainfall. This marks a continuation of the dry spell that began in July, where rainfall significantly decreased, offering a stark contrast to the wet months that precede it. While September doesn’t see a substantial uptick in precipitation compared to August, which also recorded 25 mm, it serves as a gentle transition towards the wetter months ahead. The data hints at a shift on the horizon, as October is expected to bring more robust rainfall with 86 mm (3.4 in) anticipated over 11 days. This gradual return to wetter conditions sets the stage for the significantly wetter months of November and December, which follow—highlighting a cyclical nature of precipitation in this vibrant region.

September Precipitation Trends in Corumba

The chart displays monthly precipitation patterns in Corumba, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Corumba, September typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec1261541388759282252586178122
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Corumba

In September, Corumba, Brazil experiences a significant drop in humidity, reaching a low of 35%. This marks the continuation of a trend observed from July to September, where humidity levels steadily decline from 51% to an arid 35%, offering a refreshing contrast to the oppressive humidity typical of the earlier months. As the dry season sets in, the climate shifts notably from the preceding months, where high humidity levels prevailed, such as January and March, both hovering around 87%. This gradual decrease hints at the approaching dry season, setting the stage for the warmer yet more comfortable conditions of the months ahead.

September Average Humidity in Corumba

This chart illustrates the average monthly humidity levels in Corumba, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Corumba is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%85%87%86%80%66%51%40%35%36%69%85%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Corumba

In September, Corumba experiences a notable UV Index of 11, categorizing it as extreme with a burn time of just 10 minutes. This marks a gradual increase from the preceding months, reflecting the region's enduring exposure to intense sunlight. As the country transitions from winter to spring, September's UV levels hint at the persistent intensity that Corumba faces throughout the year, particularly in the warmer months. Following closely behind September, the UV Index spikes again in October to 14, maintaining a demanding outdoor environment. For those looking to enjoy the sun safely, understanding these trends is crucial. For more information, visit the Corumba UV Index.

Maximum UV Index Levels in Corumba for September

The chart shows the monthly maximum UV Index (UVI) for Corumba in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In September, the maximum UV index in Corumba typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec151514129781011141516
Data source: Corumba September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

September Sunshine in Corumba

September in Corumba, Brazil, offers a delightful continuation of the sunny spell, with the city basking in 304 hours of sunshine. This month aligns seamlessly with August, both showcasing similar bright days. As the seasons transition, it's interesting to note that September holds its own against the high summer months of January and March, when sunshine hours peak at 261 and 313, respectively. The average daylight remains relatively stable, hinting at an inviting climate that encourages outdoor activities. As the year progresses toward October—which enjoys just a slight increase in sunshine to 305 hours—September stands out as a golden month, promising a perfect blend of warmth and light.

Monthly Sunshine Duration in Corumba: September Highlighted

The September sunshine duration represents the total number of hours Corumba experiences direct sunlight during the month of September, excluding cloudy or obstructed periods. This chart compares the sunshine duration of September with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec261h285h313h304h293h278h312h304h304h305h303h317h
Data source: Corumba September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Corumba During September

In Corumbá, Brazil, September offers a promising 66% chance of sunny weather, positioning it favorably as the month transitions from winter to spring. This trend reflects a gradual increase in sunshine compared to the earlier months, such as June and July, where the likelihood peaks at 78% and 76%, respectively. As the region shifts from the drier winter months of July and August into the more humid months ahead, September stands out as a vibrant time for outdoor activities, with plenty of opportunities to bask in the sun before the chance of rain rises again in October. This blend of warmth and sunshine makes September an appealing choice for visitors eager to enjoy the Brazilian skies.

Percentage of Sunny Days in September in Corumba

The chart illustrates the percentage of sunny days in Corumba throughout the year, with September highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Corumba experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec17%53%46%45%51%53%78%76%66%42%21%26%
Data source: Corumba September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Corumba in September

In Corumba, Brazil, the rhythm of daylight dances through the months, revealing a captivating pattern. As the year unfolds, September stands out with a consistent 11 hours of daylight, mirroring the previous months of June, July, August, and maintaining the trend of shorter days as winter winds down. This gradual transition from the long days of summer, peaking at 13 hours in January and November, gently shifts toward the shorter days of winter. As October approaches, daylight begins to lengthen once more, hinting at the return of longer, sunlit hours that characterize the warmer months ahead. The interplay between daylight duration and seasonal changes in Corumba truly paints a vivid picture of nature's cyclical beauty.

Average Daylight Hours in Corumba for September

The chart illustrates the variation in daylight duration in Corumba throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec13h 6m12h 41m12h 9m11h 37m11h 11m10h 59m11h 6m11h 28m11h 59m12h 31m13h13h 14m
Data source: Corumba daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Corumba

As September arrives in Corumba, Brazil, the gentle whispers of the wind begin to crescendo, marking a notable shift in the season. With an average wind speed of 3.0 m/s (7 mph), this month unveils a refreshing breeze that stands out against the calmer earlier months. The trend reveals a steady increase from the mellow winds of January through August, where the average lingered between 1.9 to 2.9 m/s (4 to 6 mph). This invigorating gust not only brings a sense of movement but also hints at the change of seasons ahead, enhancing the vibrant atmosphere of the region. As October rolls in, the winds slightly retreat, but September's breezy embrace leaves a lasting impression, inviting all to enjoy the outdoors.

Average September Wind Speed in Corumba

The chart displays monthly wind speed patterns in Corumba, with values for each month shown alongside September's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how September's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec2.21.92.01.92.42.52.72.93.0 m/s2.72.11.9
Data source: Corumba September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Corumba Compares to Other Months

Weather in Corumba varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Corumba, focusing on differences in temperature, rainfall, humidity, and UV levels.

September and January present distinctly different weather patterns. In September, temperatures range from a minimum of 9°C (49°F) to a maximum of 42°C (108°F), with an average of 28°C (83°F). The month sees relatively low precipitation at 25 mm (1.0 in) over just 4 days and a humidity level of 35%. In contrast, January features milder minimum temperatures of 21°C (69°F) and a maximum of 38°C (101°F), while maintaining the same average of 28°C (83°F). However, January is marked by significantly higher rainfall, totaling 126 mm (5.0 in) over 17 days, and a much higher humidity level of 87%. This shift indicates a transition from a drier, more variable September to a wetter, more humid January. For more specific details, you can check Corumba weather in January.

In comparing September and February weather, notable differences emerge in temperature, precipitation, and humidity levels. September typically features a broader temperature range, with minimums dropping to 9°C (49°F) and maximums soaring up to 42°C (108°F), paired with low humidity at 35%. In contrast, February maintains a warmer baseline with minimum temperatures around 20°C (69°F) and highs reaching 37°C (99°F), while exhibiting much higher humidity levels of 85%. Additionally, February experiences significantly more rainfall, with 154 mm (6.1 in) over 19 days compared to September's mere 25 mm (1.0 in) over just 4 days. For a more detailed understanding of February conditions, you can visit Corumba weather in February.

In September, the weather is characterized by a wider range of temperatures, with a minimum of 9°C (49°F) and a maximum reaching up to 42°C (108°F), while the average temperature hovers around a warm 28°C (83°F). The month sees relatively low precipitation, totaling just 25 mm (1.0 in) over about 4 days, and low humidity levels at 35%. In contrast, March experiences milder minimum temperatures at 18°C (64°F) and a maximum of 38°C (100°F), maintaining a similar average temperature of 28°C (82°F). However, March is significantly wetter, with precipitation of 138 mm (5.4 in) occurring over 17 days and humidity soaring to 87%. For more specific details about the weather during this month, you can check Corumba weather in March.

When comparing the weather in September and April, significant differences emerge. September typically showcases warmer temperatures, with a minimum of 9°C (49°F) and an average high of 42°C (108°F), while April has a milder minimum of 13°C (56°F) and a maximum of 37°C (98°F). Additionally, September experiences lower humidity at 35%, but it sees only 25 mm (1.0 in) of rainfall over 4 days. In contrast, April is much wetter, with 87 mm (3.4 in) of precipitation spread across 10 days and considerably higher humidity at 86%. For a closer look at April’s climate, you can refer to this link: Corumba weather in April.

In September, the weather tends to be warmer, with an average temperature of 28°C (83°F) and maximums that can reach up to 42°C (108°F), while only experiencing about 25 mm (1.0 in) of precipitation over 4 days. In contrast, May presents a cooler climate with average temperatures of 24°C (75°F) and maximums peaking at 35°C (95°F), along with higher precipitation levels of 59 mm (2.3 in) spread over 5 days, contributing to a much more humid environment with a humidity level of 80%. For more detailed information, you can visit Corumba weather in May.

September weather typically showcases a wider temperature range compared to June, with minimums around 9°C (49°F) and maximums soaring up to 42°C (108°F), leading to an average of 28°C (83°F). In contrast, June sees cooler temperatures, averaging 22°C (72°F) with highs reaching only 35°C (95°F). While both months experience similar precipitation levels, September's humidity is significantly lower at 35%, compared to June's 66%, making it feel quite different outside. For more details, you can check out Corumba weather in June.

In comparison to July, September experiences a notable increase in temperature, with averages soaring to around 28°C (83°F) and maximums reaching up to 42°C (108°F), while July's average temperature rests at a cooler 22°C (73°F) with a maximum of 36°C (96°F). Additionally, September has higher humidity at 35% compared to July's 51%, which may contribute to a more uncomfortable heat despite July's slightly cooler temperatures. Rainfall is also more frequent in September, with 25 mm (1.0 in) of precipitation over 4 days, whereas July remains dry with only 2 mm (0.1 in) and no rainy days. For a detailed look at July weather, check out Corumba weather in July.

In comparing the weather of September and August, September features slightly more extreme temperatures, with average highs reaching 42°C (108°F) compared to August’s maximum of 40°C (104°F). Additionally, September has an average temperature of 28°C (83°F), which is noticeably warmer than August’s average of 24°C (76°F). Both months experience the same amount of precipitation at 25 mm (1.0 in), but September has rain over four days, while August has it over three days. Humidity levels are lower in September at 35%, whereas August experiences higher humidity at 40%. For more details, check out Corumba weather in August.

In September, temperatures in Corumba enjoy a significant range, with minimums of 9°C (49°F) rising to scorching highs of 42°C (108°F). The month sees relatively low humidity at 35% and only 25 mm (1.0 in) of precipitation over just 4 days. In contrast, October ushers in slightly warmer temperatures, with minimums at 16°C (61°F) and an average of 29°C (84°F), but peaks can rise to an even hotter 43°C (109°F). Precipitation increases considerably to 86 mm (3.4 in) over 11 days, and humidity remains steady at 36%. For more details on October weather, check out Corumba weather in October.

September and November present contrasting weather patterns, despite sharing an average temperature of 28°C (83°F). In September, temperatures range from a cooler minimum of 9°C (49°F) to a maximum of 42°C (108°F), along with relatively low humidity at 35%. Precipitation is minimal during this month, with only 25 mm (1.0 in) falling over just 4 days. In stark contrast, November sees a warmer minimum temperature of 17°C (63°F) and a slightly lower maximum of 40°C (104°F). However, it experiences significantly higher rainfall, totaling 178 mm (7.0 in) spread across 15 days, contributing to a much more humid atmosphere with humidity levels rising to 69%. To learn more about the detailed weather conditions, you can refer to Corumba weather in November.

In September, the weather is generally warmer with average temperatures reaching 28°C (83°F) and maximums soaring to 42°C (108°F), requiring fewer clothing layers. With only 25 mm (1.0 in) of precipitation spread over 4 days, humidity remains relatively low at 35%, making it feel more comfortable for outdoor activities. In contrast, December brings higher minimum temperatures averaging 21°C (69°F) and an average high of 29°C (84°F). However, the month is characterized by significantly increased rainfall, totaling 122 mm (4.8 in) over 18 days, which leads to a much higher humidity level of 85%. This shift contributes to a more humid and potentially less comfortable atmosphere. For more details on December's weather, you can visit Corumba weather in December.

Compare Corumba's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Corumba

As September arrives in Corumba, it heralds a transition that brings a delightful blend of warmth and occasional precipitation. Unlike the intense heat of the summer months, September's average temperatures provide a comfortable backdrop for outdoor activities, while still reaching impressive highs. With relatively low humidity and just a few days of rain, the month strikes a balance, making it an ideal time to explore the region's natural beauty. This shift in weather not only enhances the landscape but also offers visitors a fresh perspective on Corumba's alluring climate. For a deeper understanding of this fascinating weather pattern, be sure to check out Corumba Climate.