Last updated: August 21, 2025
September in Porto Seguro, Brazil offers a delightful blend of warm temperatures and vibrant humidity, making it an inviting destination for travelers. With maximum temperatures reaching up to 28°C (82°F) and a comfortable average of 24°C (75°F), the climate is perfect for outdoor adventures. However, visitors should be prepared for occasional rain, as the month sees 59 mm (2.3 in) of precipitation over 14 days, contributing to a humidity level of 73%. Whether exploring the stunning beaches or enjoying the rich local culture, September provides a unique experience shaped by its mild, tropical weather.
In September, Porto Seguro experiences a delightful transition, with temperatures slightly rising as the region moves towards the warmer months. The average temperature settles at a comfortable 24°C (75°F), framed by a minimum of 20°C (68°F) and a maximum reaching 28°C (82°F). This month often marks the end of winter's cooler grasp, leading to a gradual increase in warmth that makes outdoor activities all the more inviting. As the climate shifts from the cooler breezes of August, visitors can enjoy the pleasant weather, ideal for exploring the stunning beaches and lush landscapes that define this vibrant destination.
In September, Porto Seguro experiences a gentle reprieve from the heavy rainfall that characterizes the months prior. The average precipitation drops to 59 mm (2.3 in) over approximately 14 days, making it one of the least wet months of the year. This trend marks a shift from the sustained downpours of March through May, where the city faces upwards of 130 mm of rain. As the season transitions toward October, precipitation begins to rise again, but September stands out as a relatively drier month, offering residents and visitors a brief window of clearer skies and milder weather. The light drizzle that does fall can be refreshing, adding a subtle charm to the early spring atmosphere of this coastal paradise.
In September, Porto Seguro, Brazil, experiences a pleasant dip in humidity, with levels dropping to 73%. This marks the continuation of a gradual decline that begins in the peak summer months of January through March, where humidity peaks at an average of 83%. As the year progresses into the cooler months, humidity steadily lessens, reaching its annual low of 72% by October and remaining consistent through November and December. This trend creates an inviting atmosphere, making Porto Seguro a favorable destination for those seeking a mix of warm weather and comfortable humidity levels as the year transitions from summer to fall.
September in Porto Seguro, Brazil, continues the trend of extreme UV exposure, with a UV Index of 12 and a rapid burn time of just 10 minutes. As the year progresses, it’s evident that the UV Index remains consistently high, peaking at 15 in the earlier months. Even as we transition into the fall, the UV levels remain a significant concern, similar to those experienced in August and the preceding months. For locals and visitors alike, it is crucial to stay vigilant about sun protection during this time. To learn more about how to safeguard against harmful UV rays, visit Porto Seguro UV Index.
UV Risk Categories
September in Porto Seguro, Brazil, shines brightest with an impressive 316 hours of sunlight, making it the sunniest month of the year. This delightful surge of sunny days marks a significant jump from August's already generous 307 hours. Following a trend of consistent brightness throughout the year, where sunlight hours peak during the late summer months, September's golden rays create an inviting atmosphere for both locals and tourists alike. As the days begin to shorten slightly in October, the warmth and vibrancy of September linger in the air, providing the perfect backdrop for beach relaxation and exploration in this beautiful coastal paradise.
In September, Porto Seguro enjoys a 54% chance of sunny weather, marking a shift towards more favorable conditions as the month transitions towards spring. This represents a slight increase from the previous months, where sun-soaked days were common, particularly in July and March, which boasted 58% and 59% chances respectively. As the region gradually warms, travelers can expect more opportunities to bask in the sun, especially compared to the notably lower probabilities found in the months of October and beyond. This trend not only highlights September as an attractive time for sightseeing and beach activities but also emphasizes the tail end of Porto Seguro's prime sunny season, enticing visitors to soak up the vibrant atmosphere of this picturesque coastal destination.
In Porto Seguro, Brazil, the daylight duration varies throughout the year, showcasing a rhythmic pattern that reflects the changing seasons. As the year unfolds, the early months of January through March bask in a consistent 12 hours of daylight, ideal for sun-seekers and outdoor enthusiasts. However, as April through August arrive, the golden hours slightly shorten to 11 hours, offering a more subdued ambiance. Interestingly, September marks a return to 12 hours of daylight, hinting at a seasonal shift leading into the lengthening days of Spring. The trend continues upward into October and November, where daylight remains steady at 12 hours, before culminating in December, where the sun graces Porto Seguro for an inviting 13 hours. This dynamic interplay between light and dark creates a vibrant backdrop for both relaxation and adventure year-round.
As September arrives in Porto Seguro, Brazil, the winds begin to pick up slightly, with an average speed of 4.0 m/s (9 mph). This marks a continuation of a trend observed in recent months, as the breezy July saw a peak of 4.5 m/s (10 mph), and August followed closely at 3.9 m/s (9 mph). The consistency in wind speed from late summer into early fall signals an invigorating atmosphere, perfect for beachgoers and outdoor enthusiasts alike. As the season transitions, it invites both locals and travelers to enjoy the refreshing gusts that dance through the coastal town, reinforcing its reputation as a vibrant destination.
Weather in Porto Seguro varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Porto Seguro, focusing on differences in temperature, rainfall, humidity, and UV levels.
In September, the weather tends to be warm with minimum temperatures around 20°C (68°F) and average highs reaching up to 28°C (82°F). The month sees an average of 59 mm (2.3 in) of rainfall over about 14 days, combined with a humidity level of 73%. In contrast, January experiences slightly warmer conditions, with minimum temperatures at 23°C (73°F) and average highs of 30°C (85°F). Precipitation decreases to 48 mm (1.9 in), occurring over approximately 15 days, and the humidity remains comparable at 75%. For more details on what to expect, check out Porto Seguro weather in January.
In September, the weather in Porto Seguro tends to be slightly cooler with temperatures ranging from a minimum of 20°C (68°F) to a maximum of 28°C (82°F) and an average of 24°C (75°F). The month experiences 59 mm (2.3 in) of precipitation spread over 14 days, along with a humidity level of 73%. In contrast, February brings warmer temperatures, with a minimum of 23°C (73°F) and a maximum of 31°C (88°F), averaging 27°C (80°F). Despite receiving a similar amount of rainfall at 58 mm (2.3 in), February sees a higher frequency of rainy days, totaling 20, and it has a higher humidity level at 79%. For more details, check out Porto Seguro weather in February.
September and March showcase distinct weather patterns. In September, temperatures range from a minimum of 20°C (68°F) to a maximum of 28°C (82°F), with an average of 24°C (75°F). The month experiences about 59 mm (2.3 in) of precipitation over 14 days, accompanied by a humidity level of 73%. In contrast, March tends to be warmer, with temperatures ranging from 23°C (74°F) to 31°C (87°F) and an average of 26°C (80°F). However, it brings a higher rainfall total of 121 mm (4.8 in) across 21 days and increased humidity at 83%. For a more in-depth look at the conditions during this time, check out Porto Seguro weather in March.
When comparing the weather in September and April, a noticeable difference in temperature and precipitation emerges. September features milder temperatures, with a minimum of 20°C (68°F) and a maximum of 28°C (82°F), alongside average humidity levels of 73%. In contrast, April experiences warmer conditions, showcasing a minimum of 22°C (71°F) and a maximum of 31°C (87°F), while also having higher humidity at 83%. Precipitation levels are significantly greater in April, with 130 mm (5.1 in) over 23 days, compared to September's 59 mm (2.3 in) over 14 days. For those looking to explore more about April weather specifics, you can check Porto Seguro weather in April.
In comparing the weather of September and May, both months exhibit warm temperatures, but May tends to be slightly warmer overall. September has an average temperature of 24°C (75°F) with a maximum reaching 28°C (82°F), while May features an average of 25°C (77°F) and can peak at 29°C (85°F). However, May experiences significantly more rainfall, with precipitation totaling 129 mm (5.1 in) over 20 days compared to September's 59 mm (2.3 in) across 14 days. Additionally, humidity levels are higher in May at 81%, compared to 73% in September, making the latter slightly more comfortable. For more detailed weather insights for May, you can check Porto Seguro weather in May.
In comparing the weather of September and June, we see some notable similarities and differences. Both months have minimum temperatures hovering around 20°C (68°F), with an average temperature of 24°C (75°F). However, June tends to be slightly warmer, reaching a maximum temperature of 29°C (84°F) compared to September's 28°C (82°F). Precipitation levels are higher in June, with 78 mm (3.1 in) over 18 days, whereas September experiences 59 mm (2.3 in) of rain across 14 days. Additionally, humidity is a bit lower in September at 73%, compared to June's 78%. For more detailed information, you can check out Porto Seguro weather in June.
When comparing the weather in September and July, we find that both months have similar temperature ranges, with September featuring a minimum of 20°C (68°F), an average of 24°C (75°F), and a maximum of 28°C (82°F). In July, temperatures are slightly lower, with a minimum of 20°C (67°F), an average of 23°C (74°F), and a maximum of 28°C (83°F). Precipitation levels are comparable, with September receiving 59 mm (2.3 in) over 14 days, while July sees slightly more with 61 mm (2.4 in) across 19 days. Humidity remains high in both months, at 73% in September and 76% in July. For more detailed information, you can check Porto Seguro weather in July.
In comparing the weather between August and September, September tends to be slightly warmer, with average temperatures ranging from a minimum of 20°C (68°F) to a maximum of 28°C (82°F), compared to August's range of 18°C (65°F) to 27°C (80°F). While September experiences a modest decrease in precipitation at 59 mm (2.3 in) over 14 days, August sees a bit more rain at 65 mm (2.6 in) over 19 days. Humidity levels remain quite similar, with September at 73% and August at 75%. For more detailed insights on August weather, you can check out Porto Seguro weather in August.
In September, the weather in Porto Seguro is characterized by warm temperatures, averaging 24°C (75°F), with a minimum of 20°C (68°F) and a maximum of 28°C (82°F). The month sees a decent amount of rainfall, totaling about 59 mm (2.3 in) over 14 days, accompanied by a humidity level of 73%. In contrast, October experiences slightly warmer weather, with average temperatures rising to 25°C (77°F) and a maximum reaching 29°C (84°F). However, it also brings increased rainfall, totaling 93 mm (3.7 in) over 16 days, while humidity remains relatively stable at 72%. For more detailed information, check out Porto Seguro weather in October.
In comparing the weather between September and November, it is evident that November tends to be slightly warmer, with average temperatures reaching 25°C (78°F) compared to September's average of 24°C (75°F). Additionally, both months have similar minimum temperatures of around 20°C (68°F-69°F), but November sees higher maximum temperatures of 29°C (85°F). However, November is notably wetter, featuring 193 mm (7.6 in) of precipitation over 20 days, whereas September experiences only 59 mm (2.3 in) over 14 days. Despite the increased rainfall in November, humidity levels remain comparable, with September at 73% and November at 72%. For a more detailed look at the weather patterns, you can check Porto Seguro weather in November.
September's weather in Porto Seguro features a pleasant temperature range, with minimums around 20°C (68°F) and maximums reaching 28°C (82°F). The month sees moderate precipitation of 59 mm (2.3 in) over 14 days, alongside a relatively high humidity of 73%. In contrast, December brings warmer temperatures, with a minimum of 22°C (72°F) and a maximum of 29°C (85°F), making it slightly hotter overall. However, December also experiences significantly higher rainfall, totaling 210 mm (8.3 in) across 21 days, while the humidity remains fairly consistent at 72%. For more detailed insights, check out Porto Seguro weather in December.
As September rolls in, Porto Seguro begins to transition into warmer temperatures, making it a delightful month for visitors. With an average temperature of about 24°C (75°F), this period offers a comfortable warmth, particularly compared to the cooler winter months preceding it. However, don't forget your umbrella—precipitation is more common this time of year, with wet days gradually increasing, though the humidity remains manageable. This blend of mild heat and occasional showers makes September a unique time to experience Porto Seguro's vibrant landscapes and rich culture. For a more comprehensive overview, be sure to check out the detailed Porto Seguro Climate.