Last updated: August 21, 2025
September in Ilheus, Brazil is characterized by a pleasant tropical climate, where the maximum temperatures reach an inviting 27°C (81°F) and the average temperature hovers around 24°C (75°F). Visitors can expect mild evenings with a minimum temperature of 19°C (67°F). While the weather is generally warm, July sees considerable precipitation totaling 74 mm (2.9 in) over 18 days, contributing to a high humidity level of 75%. This combination of warm temperatures and frequent rain makes September a lush and vibrant time to experience the natural beauty of Ilheus.
In September, Ilheus, Brazil ushers in the transition from cooler winter months to the more temperate conditions of spring. The temperatures range from a minimum of 19°C (67°F) to a maximum of 27°C (81°F), with an average of 24°C (75°F). This slight warming trend is indicative of the approaching summer, as temperatures steadily rise from the cooler months of July and August. As September unfolds, visitors can expect pleasant, comfortable weather, perfect for exploring the vibrant local culture and scenic coastal beauty. The gradual increase in warmth also sets the stage for the lush landscapes to flourish, making it an ideal time to experience the natural splendor of this coastal paradise.
In September, Ilheus, Brazil, experiences a notable shift in precipitation patterns, with an average rainfall of 74 mm (2.9 in) falling over 18 days. This marks a significant decrease compared to the wetter months preceding it, such as April and November, where rainfall often exceeds 140 mm. As the dry season approaches, the frequency of rainy days also tapers off, offering a brief respite before the region sees a surge in precipitation again in the coming months. Despite this slight dip, September maintains a lush backdrop, making it a transitional month that hints at both lingering humidity and the promise of sunnier days ahead.
In September, Ilheus experiences a slight dip in humidity, settling at 75%, which marks the tail end of a humid streak that began in the earlier months of the year. The trend shows a gradual decrease from the peak levels of 84% in April, with the humidity consistently hovering around the mid to high seventies through late summer. This subtle decline not only signals the onset of drier conditions but also hints at the transition towards the cooler months ahead. As the year progresses, the humidity continues to fall, reaching its lowest point at 72% in December, creating a refreshing shift for both residents and visitors alike.
In September, Ilheus, Brazil, experiences a UV Index of 12, firmly placing it in the extreme exposure category with a burn time of just 10 minutes. This month marks a subtle shift from the previous weeks of intense sun exposure seen during the peak months of January to April, where the UV Index consistently peaked at 14. Following a slightly lower Index in May and June, September’s UV levels remain notably high. As we move into October, the UV Index climbs back to 14, indicating that the risk of harm from unprotected sun exposure is significant. This trend underscores the importance of vigilant sun safety practices year-round in Ilheus. For more insights, visit Ilheus UV Index.
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September in Ilheus, Brazil, basks in a radiant glow, offering an impressive 313 hours of sunshine—the peak of the year’s luminous display. This vibrant month continues a trend of increasing daylight, following the already sunny August that recorded 301 hours. As the days shorten and summer gives way to autumn in the Northern Hemisphere, Ilheus remains a sun-soaked paradise, basking in more light than many other months. Notably, October takes the lead with 315 hours, yet September’s warm embrace sets the stage for this exceptional seasonal transition. Visitors and locals alike can revel in the beauty of the sun-drenched days, making it an ideal time to explore the stunning beaches and lush landscapes of this tropical haven.
In Ilheus, Brazil, the likelihood of sunny weather in September stands at 52%, marking a subtle uptick compared to the preceding months when sunshine probabilities hovered around the mid-to-low forties. As the dry season wanes and transitions towards more stable weather patterns, September emerges as a delightful opportunity for sun seekers. This enhanced chance for clear skies is particularly enticing when juxtaposed with November and December, where chances dip dramatically to just 19% and 12%, respectively. Overall, September's weather signals a promising balance of warmth and sun, making it an appealing time for visitors to experience Ilheus at its brightest.
In Ilheus, Brazil, September marks a notable transition in daylight duration, as the city experiences 12 hours of daylight—a return to the consistent brightness enjoyed in the earlier months of the year. Following the more subdued light of April through August, where the daylight was limited to 11 hours, September heralds a renewed vibrancy. This pattern continues through the end of the year, with October to December also offering 12 hours of daylight. This cyclical rhythm not only reflects the region's unique geographical position but also sets the stage for engaging outdoor activities and breathtaking sunsets—making September a delightful time to embrace the beauty of Ilheus.
In September, the winds in Ilheus, Brazil, exhibit a gentle rhythm, with an average speed of 3.3 m/s (7 mph). This marks a slight dip from the stronger breezes of July, where gusts reached 4.4 m/s (10 mph), but aligns closely with the calmness typical of both January and March. As the year transitions from winter into spring, the winds remain moderate, offering a delightful contrast to the heat of the day. Notably, September's breezes are softer than the preceding summer months but set the stage for the more invigorating winds that return later in the year. As autumn approaches, this slight ebb in wind speed invites peaceful moments along the beautiful coastline, providing the perfect backdrop for leisurely strolls and sun-soaked afternoons.
Weather in Ilheus varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Ilheus, focusing on differences in temperature, rainfall, humidity, and UV levels.
In September, the weather is characterized by mild temperatures, with a minimum of 19°C (67°F) and an average of 24°C (75°F), reaching a maximum of 27°C (81°F). This month sees approximately 74 mm (2.9 in) of rainfall over 18 days, coupled with a humidity level of 75%. In contrast, January experiences slightly warmer temperatures, with a minimum of 22°C (72°F), an average temperature of 26°C (80°F), and a maximum of 30°C (85°F). Although January has less precipitation at 60 mm (2.4 in), it still rains on around 20 days, and humidity remains comparable at 76%. For those looking to explore the region, more details can be found in Ilheus weather in January.
September and February present distinct yet somewhat similar weather patterns, with February generally being warmer. In September, temperatures range from a minimum of 19°C (67°F) to a maximum of 27°C (81°F), with an average of 24°C (75°F). In contrast, February boasts higher temperatures, with a minimum of 23°C (74°F), an average of 27°C (80°F), and a maximum of 30°C (87°F). Both months experience similar precipitation levels, with September and February receiving about 74 mm (2.9 in) of rain, though February has slightly more rainy days—23 compared to September’s 18 days. Additionally, February exhibits a higher humidity level at 79%, compared to 75% in September. For more information on specific weather conditions, you can refer to Ilheus weather in February.
In comparing the weather of September and March, we see some noticeable differences. September typically features milder temperatures, with a minimum of 19°C (67°F) and an average high around 27°C (81°F), whereas March tends to be warmer, with minimum temperatures starting at 22°C (73°F) and maximums reaching 30°C (86°F). Precipitation levels also vary significantly; September experiences around 74 mm (2.9 in) of rain over approximately 18 days, while March sees a substantial increase in rainfall, accumulating 138 mm (5.4 in) over 24 days. Additionally, humidity levels are slightly higher in March at 83%, compared to 75% in September. For more details on specific conditions, you can check out Ilheus weather in March.
In comparing the weather conditions of September and April, we can see notable differences. September typically experiences milder temperatures, with a minimum of 19°C and an average high of 27°C, along with significant humidity at 75%. In contrast, April brings warmer weather, with minimum temperatures beginning at 22°C and reaching up to 30°C on average, while humidity rises to 84%. Furthermore, April sees increased rainfall, totaling 149 mm over 25 days, compared to September's 74 mm over 18 days. For more specific details on April weather, you can visit Ilheus weather in April.
In September, the weather is typically warm with average temperatures ranging from a minimum of 19°C (67°F) to a maximum of 27°C (81°F). This month experiences a moderate level of precipitation, totaling 74 mm (2.9 in) over 18 days, and humidity levels are around 75%. In contrast, May boasts slightly warmer temperatures with a minimum of 20°C (69°F) and a maximum of 29°C (85°F), averaging 25°C (77°F). However, it sees a higher amount of rainfall, with 122 mm (4.8 in) spread over 22 days, accompanied by a bit more humidity at 83%. For a detailed summary of May’s weather, you can visit Ilheus weather in May.
In comparing the weather between September and June, it is notable that both months maintain similar average temperatures, with September showing a minimum of 19°C (67°F) and a maximum of 27°C (81°F), while June has slightly warmer temperatures with a minimum of 20°C (69°F) and a maximum of 28°C (83°F). However, June experiences higher precipitation levels, totaling 103 mm (4.1 in) across 25 days, compared to September's 74 mm (2.9 in) over 18 days. Additionally, June has a higher humidity level at 80%, compared to September's 75%. For more detailed information on June weather, you can refer to this link: Ilheus weather in June.
In comparing the weather between July and September, we see some notable differences. September offers slightly warmer average temperatures with a mean of 24°C (75°F) compared to July's 23°C (74°F), although both months share similar minimum temperatures of 19°C (67°F). Maximum temperatures in September peak at 27°C (81°F) while July reaches 28°C (82°F).
Precipitation levels are higher in July, with 90 mm (3.5 in) over 23 days, compared to September's 74 mm (2.9 in) across 18 days, indicating a somewhat drier month. Despite this, humidity levels remain relatively high, with September at 75% and July slightly higher at 78%. For more detailed statistics, you can visit Ilheus weather in July.
Comparing the weather in September to that of August reveals some interesting trends. In September, the minimum temperature remains steady at 19°C (67°F), while the average temperature rises slightly to 24°C (75°F) and the maximum reaches 27°C (81°F). In contrast, August features a lower average temperature of 23°C (74°F) and a maximum of 26°C (80°F). Precipitation also decreases in September, with 74 mm (2.9 in) recorded over 18 days, compared to August's 95 mm (3.7 in) over 21 days. Humidity remains relatively similar, with September at 75% and August at 76%. For more detailed information, you can check out Ilheus weather in August.
September and October both feature warm temperatures, but October tends to be slightly warmer overall. In September, temperatures range from a minimum of 19°C (67°F) to a maximum of 27°C (81°F), with an average of 24°C (75°F). In contrast, October sees a minimum of 21°C (70°F), an average of 25°C (77°F), and a maximum of 28°C (83°F). While both months experience significant precipitation, October is wetter, with 96 mm (3.8 in) of rain over 19 days compared to September’s 74 mm (2.9 in) over 18 days. Despite the increase in rain, October maintains similar humidity levels at 74%. For more detailed weather information, you can check Ilheus weather in October.
September and November weather exhibit some notable differences, particularly in temperature and precipitation patterns. In September, the temperatures range from a minimum of 19°C (67°F) to a maximum of 27°C (81°F), with an average of 24°C (75°F). The month experiences 74 mm (2.9 in) of rain spread over 18 days, contributing to a humid environment with around 75% humidity. In contrast, November sees slightly warmer temperatures, with a minimum of 22°C (71°F), an average of 25°C (78°F), and a maximum of 29°C (84°F). However, it also tends to be wetter, receiving 164 mm (6.5 in) of rainfall over 23 days, with humidity levels dropping slightly to 73%. For more details on November weather, check out Ilheus weather in November.
In September, the weather is characterized by mild temperatures, with a minimum of 19°C (67°F) and an average high of 27°C (81°F), accompanied by significant humidity at 75%. However, it also sees considerable rainfall, totaling 74 mm (2.9 in) over 18 days. In contrast, December experiences slightly warmer temperatures, with a minimum of 22°C (72°F) and an average high of 29°C (85°F), but with even more precipitation at 174 mm (6.9 in) over 24 days. The humidity remains fairly consistent at 72%. For more detailed insights on the December weather in Ilheus, you can visit Ilheus weather in December.
As September unfolds in Ilheus, the weather begins to shift with a delightful blend of moderate temperatures and increased rainfall. While the average temperature hovers around a comfortable 24°C (75°F), visitors can expect a mix of warm days and cooler evenings, making it a pleasant respite from the hotter summer months. However, the rise in humidity to 75% and the 18 rainy days—resulting in a total precipitation of 74 mm (2.9 in)—marks September as a transition period, setting the stage for the rejuvenating influences of the approaching rainy season. This month offers a unique charm, as lush landscapes return to life amidst the occasional drizzle. Discover more about the seasonal changes by visiting Ilheus Climate.