Last updated: August 21, 2025
In Ubatuba, Brazil, September welcomes the transition to spring with pleasant temperatures, ranging from a maximum of 30°C (86°F) to a comfortable average of 21°C (69°F), and dipping to a minimum of 17°C (62°F) at night. This month experiences 132 mm (5.2 in) of rainfall, spread over approximately 13 days, contributing to lush greenery. With an average humidity of 58%, visitors can anticipate a blend of warm days and refreshing showers, making September an ideal time to explore the region’s stunning beaches and vibrant wildlife.
In September, Ubatuba, Brazil begins to shake off the winter chill, with temperatures gradually warming up. The month showcases a minimum of 17°C (62°F) and an average of 21°C (69°F), culminating in a comfortable maximum of 30°C (86°F). This slight rise in temperature from the cooler months of July and August signals the onset of spring, making outdoor activities increasingly appealing. As days begin to warm, visitors can expect a pleasant climate that compliments Ubatuba’s stunning beaches, perfect for soaking in the sun before the summer rush. Thus, September serves as a delightful transition, providing both warmth and the refreshing essence of the coastal breeze.
In September, Ubatuba experiences a moderate precipitation of 132 mm (5.2 in) over 13 days, marking a slight decrease compared to the wetter months of February and March. This trend suggests a tapering off of the intense rainfall associated with the peak of the wet season, which typically begins in late fall and extends into early spring. The precipitation patterns showcase a transition into a more varied rainfall regime, with October promising a rebound in rainfall to 186 mm (7.3 in) as the region prepares for the typically rainier latter part of the year. Overall, September serves as a bridge from the heavy rains of winter to the more sporadic showers that characterize the upcoming months, making it a pivotal time for local ecosystems and agriculture.
As the seasons transition in Ubatuba, Brazil, September marks a significant drop in humidity, with levels dipping to 58%. This decline follows a gradual decrease from the peak humidity months of January through August, which consistently hover around the high 80s and low 70s. By the time September arrives, the coastal city starts to feel a refreshing change, signaling the approach of drier months ahead. The trend continues into October, where humidity further lessens to 50%, creating a comfortable environment perfect for outdoor adventures. This shift not only enhances the charm of Ubatuba's stunning beaches but also invites residents and visitors alike to enjoy the lush natural beauty without the oppressive humidity.
In September, Ubatuba, Brazil, experiences a UV Index of 11, categorizing it as extreme with a burn time of just 10 minutes. This trend follows the year's typical pattern, where high UV levels dominate from January to April and then continue into October and November, peaking at 15 in January and February. After a slight dip to 8 in May, the index rises again in the latter half of the year, highlighting the need for consistent sun protection. Whether you're lounging on one of Ubatuba's beautiful beaches or exploring its lush surroundings, it's crucial to stay mindful of UV exposure. For more detailed information, visit Ubatuba UV Index.
UV Risk Categories
As September graces Ubatuba, Brazil, visitors can bask in a delightful 288 hours of sunshine, marking it as one of the sunniest months of the year. This month’s radiant weather follows the peak of summer, demonstrating a consistent trend in the region where sunny days linger well into the early spring. Following August's mild sunshine, September brings a rejuvenating warmth that invites beachgoers and nature enthusiasts alike. Notably, the sunshine hours see a climb from the depths of winter in June (261 hours) to a vibrant November (297 hours), reinforcing Ubatuba's allure as a year-round destination for sun seekers. With ample sunlight ahead, September emerges not just as a transition month but as a splendid opportunity to embrace the beauty of this tropical paradise.
In Ubatuba, Brazil, September marks a notable shift in weather patterns, displaying a 45% likelihood of sunny days. This is a striking drop from the sunny spells of mid-winter, where July and August boast 63% and 59% chances, respectively. As the region transitions into spring, the sunniness tapers slightly but remains relatively robust compared to the earlier months of the year. While the odds of clear skies in September are not as high as peak winter, they are still significantly more favorable than the cloudier months of October and November. Overall, September serves as a refreshing bridge between the sunnier winter and the gradual return of rain, making it an inviting time for visitors seeking a balance of warmth and mild weather.
As the months transition in Ubatuba, Brazil, September marks a pivotal moment in daylight duration, offering 11 hours of sunlight. This period showcases a gradual shift from the longer days of summer, where January boasts 13 hours, down to the shorter daylight hours of winter. Interestingly, the daylight duration remains consistent at 11 hours through August and September, creating a balanced atmosphere as the season begins to change. Following September, days lengthen again in October, leading into the summer months of November and December, which return to the generous 13 hours of sunlight. This rhythmic ebb and flow of light not only influences daily activities but also enhances Ubatuba's natural beauty, inviting both residents and visitors to live vibrantly under the sun.
As September unfolds in Ubatuba, Brazil, the tranquil winds pick up momentum, with an average speed of 4.1 m/s (9 mph), mirroring the breezy conditions of August. This slight increase signifies a transition into the more animated winds that will characterize the upcoming months. Over the course of the year, the wind patterns in Ubatuba exhibit a clear trend: starting from the gentler breezes of the early months, there is a noticeable escalation, peaking in October with an exhilarating 4.9 m/s (11 mph). September serves as a perfect buffer, offering mild yet invigorating winds that beckon both adventure seekers and those simply wishing to bask in the soothing embrace of nature. The month’s breezes set the stage for a vibrant shift toward the lively maritime conditions typical of the region's peak season.
Weather in Ubatuba varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Ubatuba, focusing on differences in temperature, rainfall, humidity, and UV levels.
In September, temperatures in Ubatuba range from a mild 17°C (62°F) to a warm 30°C (86°F), with an average of 21°C (69°F). This month experiences about 132 mm (5.2 in) of precipitation over approximately 13 days, accompanied by a moderate humidity level of 58%. In contrast, January brings slightly higher temperatures, with a minimum of 21°C (70°F) and a maximum of 31°C (88°F), averaging 25°C (78°F). The precipitation also increases to 146 mm (5.7 in) across about 14 days, and the humidity rises significantly to 88%. For more detailed insights on the weather this month, check out Ubatuba weather in January.
When comparing the weather of September and February, September features a more moderate temperature range with a minimum of 17°C (62°F) and an average of 21°C (69°F), reaching a maximum of 30°C (86°F). In contrast, February tends to be warmer, with an average of 25°C (77°F) and nighttime temperatures not dropping below 21°C (70°F). Precipitation is higher in February, with 212 mm (8.3 in) expected over 17 days compared to September's 132 mm (5.2 in) over 13 days. Additionally, humidity levels soar in February at 88%, making it feel quite muggy compared to the more comfortable 58% in September. For more detailed information on February weather patterns, check out Ubatuba weather in February.
September and March both feature warm temperatures, peaking at around 30°C (86°F), but they embody different weather patterns. September typically experiences a milder climate with an average temperature of 21°C (69°F) and relatively lower humidity at 58%. In contrast, March is notably warmer with a higher average of 25°C (77°F) and increased humidity at 87%. Additionally, March brings significantly more rainfall, with 227 mm (9.0 in) over about 15 days compared to September’s 132 mm (5.2 in) over 13 days. For more detailed insights, check out Ubatuba weather in March.
When comparing the weather in September and April, we see some notable differences despite their similar precipitation levels. In September, the average temperature ranges from a minimum of 17°C (62°F) to a maximum of 30°C (86°F), with an average of 21°C (69°F) and a humidity of 58%. In contrast, April is slightly warmer, with temperatures ranging from a minimum of 19°C (66°F) to a maximum of 29°C (84°F), and an average of 23°C (73°F). However, April experiences higher humidity at 84%, which can make the warmer temperatures feel more intense. Both months record similar precipitation, with each having approximately 134 mm (5.3 inches) over 13 days. For more detailed insights about April weather, you can visit Ubatuba weather in April.
September and May share a similar average temperature of around 21°C (69°F), but there are some notable differences between the two months. In September, temperatures can reach a maximum of 30°C (86°F), while May typically peaks at 29°C (84°F). Precipitation levels are slightly higher in September, with 132 mm (5.2 in) falling over 13 days, compared to May's 119 mm (4.7 in) over 12 days. Additionally, May tends to be more humid, with humidity levels reaching 79% compared to September's 58%. For more detailed information, you can explore Ubatuba weather in May.
In comparing the weather conditions of September and June, both months exhibit similar average temperatures, with September averaging 21°C (69°F) and June slightly higher at 21°C (70°F). However, September tends to be warmer, with a maximum temperature reaching 30°C (86°F), compared to June's 27°C (82°F). Additionally, September experiences more precipitation, with 132 mm (5.2 in) falling over 13 days, while June sees 112 mm (4.4 in) over 12 days. The humidity is notably higher in June at 77%, compared to September's 58%. For more specific details, you can explore Ubatuba weather in June.
In comparing the weather between September and July, September tends to be warmer and wetter. The average temperature in September is around 21°C (69°F), with maximums reaching up to 30°C (86°F), while July has slightly cooler temperatures, averaging 20°C (68°F) and maxing out at 28°C (83°F). Additionally, September experiences higher precipitation levels, receiving 132 mm (5.2 in) of rain over 13 days, compared to July's 87 mm (3.4 in) over just 7 days. Humidity levels also differ, with September at 58% and July higher at 72%, indicating that July feels more humid despite the lower temperatures. For more detailed insights, you can check out Ubatuba weather in July.
In September, temperatures range from a minimum of 17°C (62°F) to a maximum of 30°C (86°F), averaging at 21°C (69°F), which is slightly warmer compared to August's range of 15°C (59°F) to 29°C (84°F) and an average of 20°C (67°F). While September experiences a minor decrease in precipitation, recording 132 mm (5.2 in) over 13 days, August sees slightly more rain at 147 mm (5.8 in) over 12 days. The humidity levels are also lower in September at 58%, compared to August's higher humidity of 65%. For a more detailed look at the weather in August, you can visit Ubatuba weather in August.
September and October in Ubatuba show some similarities in temperature, with both months featuring a minimum of 17°C (62°F), an average of 21°C (69°F), and a maximum of 30°C (86°F). However, October experiences a notable increase in precipitation, with 186 mm (7.3 in) over 19 days compared to September's 132 mm (5.2 in) over 13 days, indicating a wetter climate as the month progresses. Additionally, humidity levels drop slightly in October to 50%, down from 58% in September. For more detailed insights, you can check the specific conditions through this link: Ubatuba weather in October.
In comparing the weather of September and November, both months experience similar average temperatures, ranging from a minimum of around 17°C (62°F) to an average of 21°C (69°F). However, November sees a slight decrease in maximum temperature, reaching up to 28°C (83°F) compared to September's 30°C (86°F). Notable differences arise in precipitation, where November receives significantly more rainfall at 205 mm (8.1 in) over 18 days, compared to September's 132 mm (5.2 in) across 13 days. Additionally, humidity levels are higher in November, sitting at 75% versus 58% in September, contributing to a more tropical feel. For more specific insights about November weather, check out Ubatuba weather in November.
In September, the weather in Ubatuba features a cooler temperature range, with minimums around 17°C (62°F) and an average of 21°C (69°F), peaking at 30°C (86°F). With 132 mm (5.2 in) of precipitation spread over 13 days, the humidity levels sit at a moderate 58%. In contrast, December experiences slightly warmer conditions, with minimum temperatures at 18°C (65°F) and an average of 23°C (74°F), while maximum temperatures reach 29°C (85°F). However, December also brings increased rainfall, totaling 180 mm (7.1 in) over 17 days and a higher humidity level of 80%. For more information on December weather in Ubatuba, check out Ubatuba weather in December.
As September unfolds in Ubatuba, the weather transitions into a delightful mix of warmth and refreshing breezes, setting it apart from the sweltering summer months. With an average temperature around a pleasant 21°C (69°F), it serves as a comfortable prelude to the hotter days ahead while still offering peak highs reaching 30°C (86°F). However, the month is marked by increased rainfall, with precipitation occurring on about 13 days and totaling 132 mm (5.2 in), adding a touch of tropical vibrancy. This unique blend of mild warmth and relative humidity at 58% invites visitors to enjoy outdoor adventures amidst occasional showers. For more detailed insights on what to expect throughout the year, check out Ubatuba Climate.