Last updated: August 21, 2025
In September, Angra dos Reis, Brazil, experiences a delightful transitional climate that invites visitors to enjoy its natural beauty. With maximum temperatures reaching 32°C (91°F) and an average of 21°C (70°F), the weather is warm yet comfortable for outdoor activities. The minimum temperature dips to 15°C (58°F), providing cooler evenings ideal for relaxation. While the region receives approximately 84 mm (3.3 in) of rainfall over about 10 days, the humidity remains at a moderate 68%, contributing to the lush, vibrant landscape. This blend of warmth and occasional showers makes September an attractive time to explore the stunning coastline and rich biodiversity of Angra dos Reis.
In September, Angra dos Reis experiences a delightful transition as the lingering chill of winter melts away. The minimum temperature rises to a comfortable 15°C (58°F), while daytime warmth brings an average of 21°C (70°F), reaching peaks of 32°C (91°F). This shift marks a noticeable increase from the cooler months, inviting residents and travelers alike to revel in the warmth and vibrant atmosphere. With such pleasant conditions, September serves as a bridge from the chilly winter, promising sunny days and a resurgence of life along this stunning Brazilian coast.
In September, Angra dos Reis experiences a notable transition in its precipitation patterns, with a total of 84 mm (approximately 3.3 in) of rain spread over 10 days. This marks a slight decrease from the wetter months of the year, following the peak rainfall of 255 mm in February and 250 mm in March. As the dry season begins to take hold, September’s rainfall is a modest dip from August's 95 mm and serves as a precursor to the more substantial downpours expected in October, which typically sees rainfall soaring to 153 mm. While the number of rainy days remains relatively stable, the overall trend toward drier conditions hints at the shift from the lush, wet landscape of the mid-year to the more temperate climate approaching the end of the year.
September marks a notable shift in Angra dos Reis, Brazil, as humidity levels begin to dip, settling at 68%. This is a significant decrease from the earlier months, highlighting a trend towards more comfortable and drier conditions as the year progresses. Following the humidity peak in March at 86%, the subsequent months consistently showcase a downward trajectory, culminating in September's relatively pleasant atmosphere. As the coastal warmth of summer beckons, the lower humidity invites outdoor exploration, making this a delightful time to enjoy the region's stunning beaches and lush landscapes. The transition into October brings even more respite, with humidity dropping to 61%, signaling the arrival of a drier season ahead.
In September, Angra dos Reis experiences a UV Index of 12, categorized as extreme, with a burn time of only 10 minutes. This month marks a slight increase from August's very high UV Index of 9, signaling that sun protection remains crucial for outdoor activities. As the region transitions from the winter months, UV levels begin to rise again, following the upward trend seen in the earlier part of the year, where January peaked at an astounding UV Index of 16. Emphasizing the need for caution, September's conditions mirror those of earlier months like March and October, highlighting the consistent intensity of sunlight that residents and visitors must be mindful of throughout the year. For more insights on this important topic, check the detailed Angra dos Reis UV Index.
UV Risk Categories
As September unfolds in Angra dos Reis, Brazil, the region basks in an impressive average of 285 hours of sunshine, marking a delightful transition into spring. This month lingers comfortably between the sun-drenched peak of March, with its high of 293 hours, and the more subdued glow of October, which sees a dip to 254 hours. September's radiant days continue the trend of abundant sunlight experienced throughout the winter months, particularly July, which records a robust 290 hours. With temperatures warming and daylight lengthening, September serves as a perfect invitation for outdoor adventures, inviting both locals and tourists to revel in the beauty of this coastal paradise.
In September, Angra dos Reis enjoys a 41% chance of sunny weather, marking a shift from the peak of winter where July and August bathe the region in 56% and 55% sunshine, respectively. As the year transitions into spring, the likelihood of clear skies diminishes slightly after the sunny months of the mid-year, but remains significantly higher than the gloomy depths of October, which plummets to a mere 17%. This trend illustrates a gradual movement towards more vibrant weather in the months ahead, with September serving as a bridge to the more optimistic conditions found in springtime. Whether planning a getaway or looking to enjoy the ocean views, the sun in Angra dos Reis in September remains a promising companion.
In September, Angra dos Reis enjoys around 11 hours of daylight, maintaining a balance similar to the previous and following months of August and October. As the year progresses from January to May, daylight gradually decreases, reaching its minimum at 10 hours during the winter months of June to August. However, as spring approaches, daylight hours begin to rebound, reflecting a gradual shift toward longer days, culminating in the return to 13 hours by November and December. This pattern of fluctuating daylight hours not only showcases the region's seasonal transitions but also sets the stage for the warm, sunlit days that characterize the Brazilian summer.
As September arrives in Angra dos Reis, Brazil, the winds shift into a slightly more invigorating rhythm, boasting an average speed of 2.9 m/s (7 mph), consistent with the breezy trend established in August. This uptick signifies a notable transition from the lighter winds of the earlier months, particularly January through April, where speeds lingered around 2.0 to 2.6 m/s. As the seasons progress towards October, you can expect the invigorated winds to continue, peaking at 3.2 m/s (7 mph). This delightful blend of ideal wind speeds enhances the region's charm, making September a perfect month for outdoor enthusiasts to enjoy the refreshing breezes of the beautiful Brazilian coast.
Weather in Angra dos Reis varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Angra dos Reis, focusing on differences in temperature, rainfall, humidity, and UV levels.
In September, the weather is generally mild, with temperatures ranging from a minimum of 15°C (58°F) to a maximum of 32°C (91°F) and an average of 21°C (70°F). It experiences moderate precipitation of 84 mm (3.3 in) over approximately 10 days and a humidity level of 68%. In contrast, January sees warmer conditions, with temperatures varying from a minimum of 19°C (67°F) to a maximum of 33°C (91°F), averaging around 25°C (77°F). However, it is also more humid at 85%, with significantly higher rainfall totaling 239 mm (9.4 in) spread over 20 days. This creates a distinctly different experience between the two months. For more detailed information, check out Angra dos Reis weather in January.
September and February in Angra dos Reis present quite distinct weather patterns. September features a milder climate with temperatures ranging from a minimum of 15°C (58°F) to a maximum of 32°C (91°F), averaging around 21°C (70°F). It experiences moderate precipitation of 84 mm (3.3 in) over approximately 10 days, paired with a humidity level of 68%. In contrast, February is warmer and more humid, with temperatures starting at a minimum of 20°C (68°F) and reaching up to 32°C (91°F), averaging 24°C (76°F). However, February has significantly higher rainfall, totaling 255 mm (10.0 in) over 22 days, leading to an increase in humidity to 85%. For more details about February weather in Angra dos Reis, you can check Angra dos Reis weather in February.
September and March present distinct weather patterns. In September, temperatures range from a minimum of 15°C (58°F) to a maximum of 32°C (91°F), with an average temperature of 21°C (70°F). The month sees about 84 mm (3.3 in) of precipitation over approximately 10 days, with humidity levels around 68%. In contrast, March tends to be warmer, with minimum temperatures of 19°C (66°F) and an average of 24°C (76°F), peaking at 31°C (88°F). However, it also experiences significantly higher rainfall, with 250 mm (9.8 in) spread across 22 days and humidity reaching 86%. For more detailed insights, check out Angra dos Reis weather in March.
September and April both offer warm temperatures with averages around 21-22°C (70-72°F), but there are notable differences in their weather patterns. While September sees a range from a minimum of 15°C (58°F) to a maximum of 32°C (91°F) and experiences about 84 mm of rainfall over approximately 10 days, April tends to be slightly warmer with a minimum of 17°C (63°F) and similar maximum temperatures, though it receives more precipitation, totaling 125 mm across 17 days. Additionally, April has higher humidity at 83%, compared to September's 68%. For a more detailed look at April's climate, you can visit Angra dos Reis weather in April.
When comparing the weather in September and May, both months feature similar average temperatures, hovering around 21°C (70°F). However, September typically experiences higher maximum temperatures, reaching up to 32°C (91°F), while May has a maximum of 29°C (84°F). In terms of precipitation, May is slightly wetter, with 95 mm (3.7 in) of rainfall over 12 days compared to September's 84 mm (3.3 in) across 10 days. Additionally, May tends to be more humid at 81%, compared to September’s 68%. For more detailed information, you can check Angra dos Reis weather in May.
When comparing the weather in September to June, September tends to be slightly warmer, with average temperatures reaching 21°C (70°F) and a maximum of 32°C (91°F), compared to June's average of 20°C (69°F) and maximum of 29°C (84°F). However, both months share a similar number of rainy days, each experiencing precipitation on about 10 days, with September receiving a higher total of 84 mm (3.3 in) compared to June's 60 mm (2.3 in). Additionally, June has a higher humidity level at 80%, compared to September's 68%, making the latter slightly more comfortable despite the warmer temperatures. For more details, you can check Angra dos Reis weather in June.
In comparing the weather conditions of September and July, September tends to be warmer and slightly more humid. The minimum temperature in September is 15°C (58°F) compared to July's lower minimum of 11°C (52°F), with average temperatures also higher in September at 21°C (70°F) versus July's 19°C (66°F). Interestingly, September experiences a higher maximum temperature of 32°C (91°F) compared to July's cap of 28°C (83°F). Although September has greater precipitation, totaling 84 mm (3.3 in) over 10 days, July has less rain, with 49 mm (1.9 in) over 7 days. For more detailed insights into the weather patterns, you can check Angra dos Reis weather in July.
September experiences slightly higher average temperatures compared to August, with a minimum of 15°C (58°F) and an average of 21°C (70°F), peaking at 32°C (91°F). In contrast, August has a lower minimum temperature of 12°C (55°F) and an average of 19°C (67°F), reaching a maximum of 31°C (87°F). Both months feature considerable rainfall, but September sees less precipitation at 84 mm (3.3 in) over about 10 days, while August records 95 mm (3.7 in) over 11 days. Humidity levels are also slightly higher in August at 73%, compared to 68% in September. For a more detailed view of August weather specifics, check Angra dos Reis weather in August.
In September, temperatures in Angra dos Reis range from a minimum of 15°C (58°F) to a maximum of 32°C (91°F), with an average of 21°C (70°F). The month sees an average precipitation of 84 mm (3.3 in) over about 10 days, with a humidity level of 68%. By contrast, October experiences slightly warmer temperatures, with minimums holding steady at 15°C (60°F), averages rising to 22°C (71°F), and maximums peaking at 34°C (94°F). However, October is also significantly wetter, receiving 153 mm (6.0 in) of rain over approximately 20 days, while humidity decreases to 61%. For more detailed insights on October weather, check out Angra dos Reis weather in October.
September and November offer distinct weather experiences. In September, temperatures range from a minimum of 15°C (58°F) to a maximum of 32°C (91°F), with an average of 21°C (70°F). There's relatively low precipitation at 84 mm (3.3 in) over about 10 days, and humidity sits at 68%. In contrast, November sees a slight increase in temperatures, with a minimum of 15°C (60°F) and a maximum of 31°C (87°F), averaging 22°C (71°F). However, the month is substantially wetter, receiving 185 mm (7.3 in) of rain over approximately 20 days, accompanied by increased humidity at 72%. For more detailed insights, you can check out Angra dos Reis weather in November.
In September, the weather features a pleasant range with minimum temperatures around 15°C (58°F) and average highs reaching 32°C (91°F). Precipitation is relatively moderate, at 84 mm (3.3 in) spread over about 10 days, along with a humidity level of 68%. In contrast, December brings slightly warmer temperatures with a minimum of 16°C (61°F) and an average high of 31°C (88°F). However, it also sees significantly higher rainfall, totaling 235 mm (9.3 in) over 24 days, leading to increased humidity at 75%. For a detailed look at December weather, check out Angra dos Reis weather in December.
As September unfolds in Angra dos Reis, the weather offers a delightful transition from the coolness of winter to the warmth of spring. This month is characterized by pleasant temperatures, making it a more comfortable time for outdoor activities compared to the sweltering summer months. With an increase in humidity and a moderate amount of rainfall spread over a few days, September provides a refreshing atmosphere, setting the stage for lush landscapes. If you're curious about the overall climate trends throughout the year, check out Angra dos Reis Climate for more insights.