Last updated: August 21, 2025
In Cachoeira, Brazil, September brings a warm tropical climate with a maximum temperature reaching up to 33°C (92°F) and an average of 23°C (74°F), making it an inviting month for outdoor activities. Nights cool down to a pleasant minimum of 17°C (62°F), providing comfortable temperatures for rest. However, this month also sees moderate precipitation, with 56 mm (2.2 in) of rain spread over 18 days, contributing to a humidity level of approximately 75%. As the season transitions, the lush landscape thrives, offering a vibrant backdrop for visitors and residents alike.
In Cachoeira, Brazil, September marks a subtle transition into warmer weather as temperatures begin to rise following the cooler winter months. With a minimum temperature of 17°C (62°F) and a mild average of 23°C (74°F), the month offers a comfortable climate for outdoor exploration. Daytime highs reach up to 33°C (92°F), making it one of the last months to enjoy relatively moderate heat before the peak summer temperatures arrive. This slight uptick in warmth is indicative of the approaching seasonal shift, inviting both locals and visitors to engage in the vibrant life of the city, all while basking in the charm of Brazilian early spring.
In September, Cachoeira experiences a notable shift in rainfall, with precipitation totaling 56 mm (2.2 in) over 18 days. This is a decrease from the heavier rains of the preceding months, particularly April and May, which saw monthly totals exceeding 100 mm (4.0 in). As we transition into the drier months of October and November, September's rainfall acts as a gentle prelude, reminding the region of the impending dry spell. The overall trend indicates a gradual decrease in precipitation as the year progresses, with September being a pivotal month bridging the wet season's intensity and the upcoming drier climate.
In Cachoeira, Brazil, September marks a shift in the seasonal humidity, dipping to 75%, which is the lowest level observed since May. This decline follows a summer peak, where the humidity consistently hovered above 80% from February to April, reaching a high of 87% in April. As the year progresses into the fall months, humidity continues to decrease, with October and November showing even drier conditions at 72% and 71%, respectively. This trend reveals a gradual transition towards a more arid climate, offering a refreshing change after the lush, moisture-laden months of the preceding summer.
In September, Cachoeira, Brazil experiences a UV Index of 13, falling within the extreme exposure category, which means that under direct sun, one could incur a burn in just 10 minutes. This month continues the trend of high UV levels observed since the start of the year, with January through April consistently showcasing UV indexes of 14, before dipping slightly to 11 in May and 9 in June. However, the intensity ramps back up in August and September, indicating that residents and visitors alike should remain vigilant and take appropriate sun protection measures. As October approaches, an even higher UV Index of 15 is anticipated, emphasizing the importance of staying protected year-round. For more detailed information, visit Cachoeira UV Index.
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As September arrives in Cachoeira, Brazil, the sun graces the region with an impressive 312 hours of sunshine, marking a delightful transition into the latter half of the year. This month stands out as a bridge between the vibrant summer months of January through March, which collectively bask in the highest sunlight hours, peaking at 328 hours in March. Following a slight dip through the cooler months, September’s sunshine is a promising precursor to October's even brighter 337 hours, showcasing a trend of increasing luminosity as the days grow longer. Overall, this delightful September glow not only elevates the spirit but also signals the lively energy that Cachoeira is famous for, making it an enchanting time to experience the town's rich culture under its radiant skies.
In Cachoeira, Brazil, the likelihood of bright sunny days in September is notably high, with a 47% chance of sunshine. This marks a slight increase from the 40% chance in August, suggesting a transition into more favorable weather as the year progresses. While September's odds are more promising than the preceding months, they still fall short of the peak observed in March, which boasts a 58% chance of sun. This gradual climb towards sunnier days highlights September as a vibrant month, perfect for enjoying outdoor activities as the region gently shifts into its spring season.
In September, Cachoeira, Brazil experiences a notable shift in daylight duration, returning to a generous 12 hours of sunlight each day, reminiscent of the long days seen at the start of the year. This revitalizing change comes after several months of slightly shorter daylight, where the sun hung around for 11 hours from April through August. The pattern is striking—throughout the year, Cachoeira consistently enjoys about 12 hours of daylight during the early months and later in the year, creating a harmonious balance of light and dark. As September unfolds, the longer days herald the transition into the warm embrace of spring, inviting residents and visitors alike to bask in the sun-drenched beauty of the season.
In September, the winds in Cachoeira, Brazil, carry a gentle breeze, with an average speed of 2.7 m/s (6 mph). This is consistent with the earlier months of the year, where wind speeds hovered around the same mark, particularly during January and May. However, as the seasons shifted, the winds truly picked up in July and August, reaching their peak with averages of 3.1 m/s (7 mph) and 3.0 m/s (7 mph) respectively. Following this slight escalation, September brings a return to the more tranquil breezes akin to the summer months. Observing these patterns, it’s clear that Cachoeira experiences its most invigorating winds just before welcoming the milder, cooler days of fall.
Weather in Cachoeira varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Cachoeira, focusing on differences in temperature, rainfall, humidity, and UV levels.
In September, temperatures typically range from a minimum of 17°C (62°F) to a maximum of 33°C (92°F), with an average temperature of around 23°C (74°F). This month sees a fair amount of rain, with 56 mm (2.2 in) of precipitation over 18 days and humidity levels hovering around 75%. In contrast, January experiences slightly warmer weather, with minimum temperatures of 19°C (67°F) and a maximum reaching 35°C (95°F), resulting in an average temperature of 26°C (80°F). January is notably drier, receiving only 40 mm (1.6 in) of precipitation on 11 days, while humidity remains slightly higher at 76%. For more detailed insights, you can check Cachoeira weather in January.
September and February present distinct weather patterns. In September, temperatures range from a minimum of 17°C (62°F) to a maximum of 33°C (92°F), with an average of 23°C (74°F). The month experiences moderate precipitation of 56 mm (2.2 in) over 18 days, coupled with a humidity level of 75%. In contrast, February offers slightly warmer conditions, with temperatures ranging from a minimum of 20°C (69°F) to a sweltering maximum of 38°C (100°F) and an average of 27°C (81°F). This month sees less rainfall, totaling 43 mm (1.7 in) across 11 days, and higher humidity at 81%. For a deeper look into the February climate, you can explore Cachoeira weather in February.
In comparing the weather of September and March, March tends to be warmer, with average temperatures around 26°C (80°F) compared to September's average of 23°C (74°F). While September has a maximum temperature of 33°C (92°F), March can reach up to 37°C (100°F). Additionally, March experiences higher humidity at 86%, compared to September's 75%. Precipitation is also more prominent in March, with a total of 93 mm (3.7 in) across 17 days, compared to September's 56 mm (2.2 in) over 18 days. For more specific details about the weather during this time, refer to Cachoeira weather in March.
In comparing the weather of September and April, we see some distinct differences. September typically boasts a minimum temperature of 17°C (62°F) and an average of 23°C (74°F), with a maximum reaching up to 33°C (92°F). The month experiences moderate precipitation, totaling 56 mm (2.2 in) over approximately 18 rainy days, and has a humidity level of around 75%.
In contrast, April tends to be warmer, with minimum temperatures starting at 19°C (67°F) and averaging 25°C (78°F), peaking at a maximum of 35°C (95°F). Rainfall is notably heavier in April, accumulating to 102 mm (4.0 in) across about 22 days, and the humidity is higher at 87%. For more detailed information, you can visit Cachoeira weather in April.
In comparing the weather of September and May, both months exhibit warm temperatures, with maximums reaching around 33°C (91°F to 92°F). September tends to have slightly lower average temperatures, ranging from a minimum of 17°C (62°F) to an average of 23°C (74°F), while May's minimum and average temperatures are a tad higher, at 18°C (64°F) and 24°C (76°F), respectively. However, May experiences significantly more precipitation, totaling 103 mm (4.0 in) over 22 days, compared to September's 56 mm (2.2 in) across 18 days. Additionally, humidity levels are higher in May at 86%, compared to 75% in September. For those interested in detailed weather specifics, check out Cachoeira weather in May.
When comparing the weather in September and June, both months exhibit similar average temperatures, hovering around 23°C (74°F). However, September tends to be slightly warmer, with maximum temperatures reaching up to 33°C (92°F) compared to June's high of 30°C (87°F). Moreover, September experiences less precipitation overall, with 56 mm (2.2 in) of rain over 18 days, in contrast to June's 90 mm (3.6 in) over 25 days. Additionally, humidity levels are a bit lower in September at 75%, compared to June's 84%. For more detailed information about the weather in June, you can visit Cachoeira weather in June.
In comparing the weather of September to that of July, September tends to be slightly warmer, with average temperatures reaching 23°C (74°F) compared to July's 22°C (72°F). The maximum temperature in September can soar up to 33°C (92°F), whereas July peaks at 31°C (87°F). However, September experiences less rainfall, with 56 mm (2.2 in) of precipitation over 18 days, while July is wetter, receiving 91 mm (3.6 in) in 24 days. Humidity levels are also marginally lower in September at 75%, in contrast to July's higher humidity of 80%. For more specific weather insights, check Cachoeira weather in July.
In comparing the weather between August and September, September tends to be slightly warmer overall, with average temperatures rising from 22°C (72°F) in August to 23°C (74°F). The maximum temperature also increases, reaching 33°C (92°F) in September compared to 31°C (89°F) in August. However, September experiences a reduction in total precipitation, dropping to 56 mm (2.2 in) over 18 days, while August sees a higher precipitation level of 80 mm (3.1 in) over 20 days. Humidity levels remain quite similar, with September at 75% and August slightly higher at 77%. For more details about August weather, you can check Cachoeira weather in August.
In comparing the weather between September and October, we observe a notable increase in average temperatures, with October reaching a minimum of 18°C (64°F) and an average of 25°C (78°F), while September has a minimum of 17°C (62°F) and an average of 23°C (74°F). October also sees higher maximum temperatures, peaking at 36°C (97°F), compared to September’s peak of 33°C (92°F). While September experiences more precipitation, with 56 mm (2.2 in) over 18 days, October is drier with only 38 mm (1.5 in) across 12 days. Humidity remains similar, slightly lower in October at 72% compared to September's 75%. For a more detailed look at October's weather, you can visit Cachoeira weather in October.
September and November exhibit notable differences in weather patterns. September boasts a minimum temperature of 17°C (62°F) and an average of 23°C (74°F), peaking at a maximum of 33°C (92°F). The month sees significant precipitation, totaling 56 mm (2.2 in) over 18 days, accompanied by relatively high humidity at 75%. In contrast, November experiences slightly warmer temperatures, with a minimum of 19°C (67°F) and an average of 26°C (78°F), reaching a maximum of 35°C (96°F). However, the month also has increased precipitation at 85 mm (3.3 in) over 15 days, while humidity decreases to 71%. For more detailed information, check out Cachoeira weather in November.
When comparing the weather in September and December, it’s clear that December tends to be warmer overall. In September, temperatures range from a minimum of 17°C (62°F) to a maximum of 33°C (92°F), with an average of 23°C (74°F). Conversely, December sees higher temperatures, with minimums at 20°C (68°F) and maximums reaching 36°C (96°F), averaging 26°C (79°F). Although December experiences slightly higher precipitation at 68 mm (2.7 in) over 12 rainy days, the humidity remains relatively stable at 70%, compared to September's 75% humidity over 18 days. For more detailed information, you can check out Cachoeira weather in December.
As September rolls in, Cachoeira experiences a delightful transition in weather that sets it apart from other months. With an inviting average temperature of 23°C (74°F), days can reach a warm 33°C (92°F), providing the perfect opportunity for outdoor adventures. However, the month is also characterized by increased humidity and scattered rainfall, with precipitation occurring on about half of the days. This unique blend of warmth and moisture not only enhances the lush greenery of the region but also contributes to the charming atmosphere that September brings. For a deeper dive into the year-round weather patterns of this enchanting city, check out Cachoeira Climate.