Last updated: August 21, 2025
In August, São Sebastião, Brazil, experiences a tropical climate characterized by warm temperatures and high humidity. The maximum reaches 31°C (88°F), while the average temperature sits comfortably at 24°C (75°F), ensuring pleasant days. However, residents and visitors should be prepared for occasional cool spells, with a minimum of 18°C (64°F). Rain is a frequent visitor this month, with a total precipitation of 62 mm (2.5 in) over approximately 20 days, making it one of the wetter months. The average humidity remains high at 80%, creating a lush and vibrant atmosphere throughout the coastal region.
In August, Sao Sebastiao experiences a delightful transition as temperatures begin to cool slightly from the peak summer heat. With minimums around 18°C (64°F) and averages settling at 24°C (75°F), the climate remains pleasant yet comfortable for outdoor activities. Daytime highs can reach up to 31°C (88°F), providing ample warmth for beachgoers and sun-seekers. As the month progresses, the slight dip from the sweltering temperatures of mid-year, such as 37°C (99°F) in March, signifies that autumn is approaching, inviting visitors to enjoy more temperate days. This blend of warmth and moderation makes August an ideal time to explore Sao Sebastiao’s stunning landscapes and vibrant culture.
In August, São Sebastião experiences a notable dip in precipitation with 62 mm (2.5 in) of rainfall spread over 20 days. This decrease follows the peak rainy months of May and June, which consistently recorded over 100 mm of rain, indicating a shift toward drier conditions as winter loosens its grip. The trend in precipitation suggests a gradual decline leading into September, where rainfall further reduces to 52 mm (2.1 in). This pattern highlights the transition towards the drier season, offering a brief respite from the heavy summer rains while still keeping the coastal atmosphere refreshingly humid.
In August, Sao Sebastiao experiences a slight dip in humidity, recording 80%—a continuation of the easing trend observed since the peak of 86% in April and May. This gradual reduction seems to herald the arrival of drier months ahead, with September further dropping to 79%. Interestingly, the humidity levels remain relatively high throughout the year, fluctuating between 76% and 86%, showcasing the area’s tropical climate. Overall, August serves as a transitional month, hinting at the subtle shift toward lower humidity that characterizes the latter part of the year.
In August, the UV Index in Sao Sebastiao, Brazil typically registers at 12, categorizing it as extreme and indicative of a burn time of just 10 minutes. This marks a slight decrease from the peak months of January through April, where it consistently reaches 14. Following August, September sees a minor uptick to 13 before returning to 14 in October and climbing to 15 in November. These trends illustrate a pattern of high UV exposure throughout the year, emphasizing the importance of sun protection during these intense months. For more details on the UV Index year-round, visit Sao Sebastiao UV Index.
UV Risk Categories
August in São Sebastião, Brazil, basks in an impressive 331 hours of sunshine, making it a delightful transition into the latter half of the year. As summer peaks, the sunlight continues to shine steadily, following a trend that begins to swell in the earlier months. After a bright January and February, where the hours slowly climb, March stands out with the highest total of 349 hours before settling into a robust rhythm through the rest of the year. From April to August, the sun remains a reliable companion, reflecting a consistent warmth that suggests not just pleasant weather but an invitation to engage in outdoor adventures. As the month of September approaches, the sunshine shows no sign of waning, embracing a splendid blend of clarity and warmth that characterizes the vibrant Brazilian coastline.
In Sao Sebastiao, Brazil, August offers a 41% chance of sunny weather, making it one of the more favorable months for enjoying the sunshine. As summer transitions to spring, there's a noticeable upward trend in sunlight likelihood, with July preceding August at 42%, and September slightly improving with a 47% chance. This pattern indicates a gradual increase in sunny days as the year progresses, peaking later in the year. Overall, while August might not guarantee clear skies, it certainly provides a solid opportunity for those looking to soak up some sun before the rainy season sets in.
In Sao Sebastiao, Brazil, the spectrum of daylight duration creates a rhythmic pattern throughout the year. From January to March, residents bask in a consistent 12 hours of daylight, making these months feel vibrant and lively. As the seasons shift into April, daylight begins to wane slightly, dropping to 11 hours and remaining steady through August. This consistent pattern of 11 hours allows for a more subdued atmosphere during the colder months. However, as September arrives, the daylight begins to stretch once again, signaling a return to the 12-hour mark and ushering in the warmth of spring. This cyclical variation highlights the balance between light and dark, reflecting the unique charm of Sao Sebastiao's tropical climate.
In Sao Sebastiao, Brazil, August brings a refreshing revival with an average wind speed of 3.0 m/s (7 mph), aligning closely with the steady breezes of both January and February. The transition from the windier months of late spring and early summer shows a subtle shift, as the winds begin to reclaim their strength leading into the vibrant energy of spring and summer. This moderate August wind, while not the strongest of the year, creates an inviting atmosphere for outdoor activities, hinting at the seasonal increase to come. As the months march towards November, where winds peak at 3.7 m/s (8 mph), August serves as a gentle reminder of the dynamic climate that makes Sao Sebastiao's shores so enchanting.
Weather in Sao Sebastiao varies notably across the year, with each month offering distinct climate conditions. This page compares August’s weather to other months in Sao Sebastiao, focusing on differences in temperature, rainfall, humidity, and UV levels.
August and January present contrasting weather patterns in the region. In August, temperatures range from a minimum of 18°C (64°F) to a maximum of 31°C (88°F), with an average of 24°C (75°F). The month experiences higher precipitation, totaling 62 mm (2.5 in) over 20 days, coupled with a humidity level of 80%. In contrast, January boasts warmer temperatures, with a minimum of 22°C (71°F) and a maximum reaching 36°C (96°F), averaging 27°C (81°F). This month sees less precipitation at 35 mm (1.4 in) over 12 days, while humidity remains slightly higher at 81%. For more specific information on January weather, visit Sao Sebastiao weather in January.
August and February showcase notable differences in weather. In August, temperatures range from a minimum of 18°C (64°F) to a maximum of 31°C (88°F), with an average of 24°C (75°F). This month experiences about 62 mm (2.5 in) of precipitation spread over 20 days, accompanied by a humidity level of 80%. In contrast, February is warmer, with minimum temperatures of 23°C (73°F) and maximum temperatures reaching up to 35°C (95°F), averaging 28°C (82°F). Although February sees less rainfall, at 49 mm (1.9 in) over 13 days, the humidity remains relatively high at 82%. For more detailed information about February weather, visit Sao Sebastiao weather in February.
When comparing the weather in August and March, notable differences emerge. August experiences milder temperatures, with a minimum of 18°C (64°F) and an average of 24°C (75°F), peaking at 31°C (88°F). In contrast, March is warmer, featuring a minimum of 22°C (72°F) and an average of 27°C (81°F), reaching a maximum of 37°C (99°F). Precipitation is also higher in March, totaling 91 mm (3.6 in) across 17 days, compared to August’s 62 mm (2.5 in) over 20 days. Humidity levels are relatively high in both months, with March slightly higher at 84% compared to 80% in August. For more detailed information, you can visit Sao Sebastiao weather in March.
When comparing the weather in August and April, it’s clear that April tends to be hotter and wetter than August. In April, temperatures range from a minimum of 21°C (71°F) to a maximum of 34°C (93°F), with an average around 27°C (80°F). In contrast, August sees milder temperatures with a minimum of 18°C (64°F), an average of 24°C (75°F), and a maximum of 31°C (88°F). Additionally, April receives more precipitation, totaling 94 mm (3.7 in) compared to August's 62 mm (2.5 in), despite both months experiencing rainfall on about 20 days. Humidity levels are also slightly higher in April at 86%, compared to 80% in August. For a closer look at April’s climatic conditions, you can visit Sao Sebastiao weather in April.
Comparing the weather in August and May reveals some interesting contrasts. In August, temperatures range from a minimum of 18°C (64°F) to a maximum of 31°C (88°F), with an average of 24°C (75°F). The month experiences about 62 mm (2.5 in) of precipitation over 20 days, resulting in a humidity level around 80%. In contrast, May tends to be warmer, with temperatures ranging from 20°C (69°F) to a sizzling maximum of 34°C (94°F) and an average of 25°C (78°F). However, it also sees more rainfall, with 105 mm (4.1 in) of precipitation spread over 22 days and a higher humidity level of 86%. For more detailed information on May weather, you can visit Sao Sebastiao weather in May.
In comparing the weather between June and August, we see some notable differences. Both months enjoy similar minimum temperatures, with June slightly warmer at a minimum of 18°C (65°F) compared to August's 18°C (64°F). The average temperature in both months hovers around 24°C (75°F), though August does peak slightly higher, with a maximum of 31°C (88°F) compared to June's 30°C (87°F). Precipitation levels are a significant distinction, as June experiences more rainfall with 109 mm (4.3 in) over 24 days, while August has only 62 mm (2.5 in) over 20 days. Additionally, humidity is higher in June at 83%, compared to 80% in August. For a more detailed look at June weather, you can check Sao Sebastiao weather in June.
In comparing the weather of August and July, August appears to be slightly warmer with an average temperature of 24°C (75°F) compared to July's 23°C (74°F). The maximum temperature in August reaches 31°C (88°F), which is a notch higher than July's 30°C (86°F). However, July experiences more rainfall, with 108 mm (4.2 in) over 24 days, while August sees only 62 mm (2.5 in) across 20 days. Humidity levels remain similar, with August at 80% and July slightly higher at 81%. For a more detailed look at July's conditions, you can check Sao Sebastiao weather in July.
In August, the weather is characterized by a minimum temperature of 18°C (64°F) and a maximum of 31°C (88°F), with an average of 24°C (75°F). The month experiences considerable rainfall, with 62 mm (2.5 in) spread over 20 days, contributing to a high humidity level of 80%. In contrast, September sees a slight increase in minimum temperature, rising to 19°C (66°F), while the maximum temperature also climbs to 33°C (91°F). Although the average remains the same at 24°C (76°F), there is a reduction in precipitation, amounting to 52 mm (2.1 in) over 18 days, leading to a marginally lower humidity of 79%. For more detailed information, you can refer to Sao Sebastiao weather in September.
In August, temperatures range from a minimum of 18°C (64°F) to a maximum of 31°C (88°F), with an average of 24°C (75°F). The month experiences relatively high precipitation, with 62 mm (2.5 in) spread over 20 days and humidity levels around 80%. In contrast, October sees slightly warmer temperatures, with a minimum of 21°C (69°F) and a maximum of 35°C (95°F), averaging 26°C (79°F). The rainfall decreases significantly to 26 mm (1.0 in) across just 9 days, while humidity remains similar at 77%. For more details on October weather, you can check Sao Sebastiao weather in October.
In August, the weather is characterized by milder temperatures, with a minimum of 18°C (64°F) and an average of 24°C (75°F), peaking at 31°C (88°F). This month experiences significant rainfall, averaging 62 mm (2.5 inches) over 20 days, coupled with high humidity levels of 80%. In contrast, November presents hotter conditions, with minimum temperatures of 21°C (71°F) and averages reaching 27°C (81°F), and maximums climbing to 35°C (96°F). The rainfall in November is considerably lower at 28 mm (1.1 inches) spread over just 8 days, and the humidity decreases slightly to 76%. For more detailed information, you can check Sao Sebastiao weather in November.
In comparing the weather between August and December, August tends to be slightly cooler with average temperatures ranging from a minimum of 18°C (64°F) to a maximum of 31°C (88°F). However, it also experiences higher humidity levels at 80% and more frequent rainfall, with precipitation observed on 20 days and a total of 62 mm (2.5 in). In contrast, December boasts warmer temperatures, averaging between 22°C (72°F) at night and peaking at 36°C (97°F) during the day. The month is characterized by less rainfall, with only 28 mm (1.1 in) spread over 8 days, and a slightly lower humidity level of 76%. For more details, you can check out Sao Sebastiao weather in December.
August in São Sebastião offers a unique blend of warm temperatures and pronounced humidity, setting it apart from other months of the year. While daily highs can reach a pleasant 31°C (88°F), the average temperature holds steady at around 24°C (75°F), creating a comfortable milieu for both locals and visitors. However, prepare for some rain, as 20 days of 62 mm (2.5 in) of precipitation can be expected, softening the vibrant sunshine the region is known for. This month typically showcases an 80% humidity that can feel quite different from the drier months, making it a time when the lush greenery comes alive. For more insights into the overall climate trends, check out Sao Sebastiao Climate.