Last updated: August 21, 2025
Experience the vibrant August weather of Rio das Ostras, Brazil, where temperatures range from a warm maximum of 34°C (93°F) to a comfortable average of 21°C (70°F), dipping to a cooler minimum of 13°C (55°F) at night. This month brings about 53 mm (2.1 in) of rain over 10 days, contributing to the lush surroundings. With an average humidity of 75%, visitors can enjoy the tropical atmosphere, ideal for both relaxation and exploration. Embrace the beauty of Rio das Ostras in August, where the warmth and occasional showers paint a perfect coastal backdrop.
In August, Rio das Ostras experiences mild temperatures, marking a shift to cooler conditions as the winter season wraps up. The minimum temperature hovers around 13°C (55°F), providing a refreshing contrast to the summer heat, while the average temperature rests at a comfortable 21°C (70°F). With a maximum of 34°C (93°F), August offers warm days ideal for enjoying the region’s beautiful beaches, albeit slightly cooler than the sweltering summer months just past. As the month unfolds, the gradual increase in temperature signals the approach of spring, making it an inviting time to explore the vibrant local culture and stunning coastal scenery.
In August, Rio das Ostras experiences a slight uptick in precipitation, with 53 mm (2.1 in) of rain falling over 10 days. This marks a notable increase from the noticeably dry conditions of July, which saw only 19 mm across just 5 days. As the dry season gradually gives way to more moisture-laden months, August serves as a transitional period, setting the stage for the wetter months ahead. September and October typically follow with even higher rainfall, indicating a shift towards the more humid climate characteristic of the region. The overall trend illustrates a movement from the driest part of the year into a more balanced wet season, creating dynamic weather patterns that nurture the lush beauty of this coastal paradise.
In August, Rio das Ostras experiences a notable dip in humidity, settling at 75%, which is the lowest level recorded for the year. This slight decrease follows a trend of diminishing humidity from the sweltering heights of 85% in January to the more moderate levels seen in the latter months. The transition from the peak humid summer months into the drier winter period showcases a gradual shift, as humidity continues to stabilize at 75% in September before dipping further in October. These changes not only offer a respite from the heavier, moisture-laden air but also contribute to the region's pleasant climate, perfect for outdoor activities.
In August, Rio das Ostras experiences a UV Index of 9, placing it in the very high exposure category with a burn time of just 15 minutes. This marks a slight decrease from the peak intensity observed in the earlier months, yet it remains crucial for sun safety. The trend throughout the year shows that January to April consistently maintain extreme UV levels, with burn times as low as 10 minutes, while May and June introduce a moderate relief with slightly lower indexes. As the year progresses into fall, the UV Index escalates again, reminding residents and visitors alike of the importance of sun protection. For more detailed insights, check out Rio das Ostras UV Index.
UV Risk Categories
In August, Rio das Ostras enjoys a delightful 291 hours of sunshine, maintaining a vibrant summer atmosphere that captivates both locals and tourists alike. This month stands out amidst a year rich in sunlight, slightly lower than the sun-drenched peak of March at 322 hours but more luminous than the cooler months of June and July. As the year progresses, sunshine hours gradually increase, with August being a beautiful balance before the sunny crescendo of December, which boasts 331 hours. The steady warmth and radiant days of August are an invitation to bask in the coastal charm of this idyllic Brazilian destination.
In August, the likelihood of sunny weather in Rio das Ostras, Brazil stands at a favorable 55%, making it a promising time for enjoying outdoor activities under the sun. This month maintains a strong position within the year, closely mirroring the sunniness of July, which boasts a peak chance of 66%. The trend suggests a steady increase in sunny days as the year progresses into mid-year, starting from a low of 30% in February. After reaching its zenith in July, August experiences a slight decline but remains above the mid-year average, indicating that visitors can still expect plenty of bright days amid the vibrant tropical scenery. Overall, August continues to offer ample opportunities to bask in the warmth before the less favorable conditions of September and October set in.
In Rio das Ostras, Brazil, the rhythmic dance of daylight evolves throughout the year, peaking in the summer months and receding as winter approaches. August sees a return to an 11-hour daylight duration, mirroring the length of the prior month. This trend signifies a gradual transition from the shorter days of winter, which lingered at 10 hours in June and July. As the months progress, daylight begins to extend again, with September also offering 11 hours of sunshine. The gradual increase continues into the warmer months, culminating in the longest days of the year in November and December, where the sun graces Rio das Ostras with around 13 hours of daylight. This annual cycle not only reflects the geographical position of the city but also influences the vibrant lifestyle and outdoor activities throughout the seasons.
August brings a refreshing increase in wind speed to Rio das Ostras, with averages reaching 3.4 m/s (8 mph). This notable rise follows the milder summer months of June and July, where the wind lingered around 2.9 m/s. As the year progresses, August sets the stage for a transition towards the more invigorating breezes of spring, marked by a further uptick to 3.7 m/s (8 mph) in September. In contrast, the earlier months of the year, particularly February and May, experienced softer winds averaging just 2.4 m/s (5 mph) and 2.1 m/s (5 mph), creating a tranquil atmosphere. Overall, the wind patterns in August reflect a dynamic shift, inviting both locals and visitors to embrace the vibrancy of Rio's coastal charm.
Weather in Rio das Ostras varies notably across the year, with each month offering distinct climate conditions. This page compares August’s weather to other months in Rio das Ostras, focusing on differences in temperature, rainfall, humidity, and UV levels.
August and January in Rio das Ostras display distinct weather patterns, reflecting the changing seasons. In August, temperatures range from a mild 13°C (55°F) to a warm 34°C (93°F), with an average of 21°C (70°F). The month sees about 53 mm (2.1 in) of rainfall over 10 days, accompanied by a humidity level of 75%. In contrast, January is characterized by consistently higher temperatures, with a minimum of 20°C (68°F), an average of 27°C (81°F), and maximums reaching 36°C (97°F). The precipitation in January notably increases to 127 mm (5.0 in) across 12 days, along with heightened humidity at 85%. For a more detailed look at January weather, visit Rio das Ostras weather in January.
When comparing the weather in August and February, notable differences in temperature and precipitation emerge. August typically experiences milder temperatures, with averages around 21°C (70°F), while February heats up significantly, averaging 26°C (79°F) and peaking at a maximum of 36°C (97°F). Additionally, February is considerably wetter, receiving around 190 mm (7.5 in) of rainfall over about 20 days, contrasting sharply with August's 53 mm (2.1 in) and 10 rainy days. The humidity in February is also higher, reaching 86%, compared to 75% in August. For a more detailed look at February weather, check out Rio das Ostras weather in February.
In comparing the weather of August and March, notable differences emerge. August tends to be milder, with temperatures ranging from a minimum of 13°C (55°F) to a maximum of 34°C (93°F) and an average of 21°C (70°F). It also experiences less precipitation, totaling 53 mm (2.1 in) over about 10 days, with humidity at around 75%. In contrast, March offers warmer conditions, with minimum temperatures of 19°C (66°F) and maximums peaking at 35°C (96°F), resulting in an average of 26°C (79°F). However, it is much wetter, receiving 185 mm (7.3 in) of rain across 17 days, and with higher humidity levels at 84%. For a more detailed look at March's climate, you can visit Rio das Ostras weather in March.
When comparing the weather in August and April, several notable differences emerge. In August, temperatures range from a minimum of 13°C (55°F) to a maximum of 34°C (93°F), with an average temperature of 21°C (70°F). The humidity stands at 75%, and precipitation is relatively low at 53 mm (2.1 in) over 10 days. In contrast, April is warmer, with a minimum temperature of 16°C (62°F) and an average high of 35°C (96°F), averaging 24°C (76°F). Rainfall is higher in April, totaling 73 mm (2.9 in) over 12 days, accompanied by increased humidity at 82%. For more detailed information on April weather, you can check Rio das Ostras weather in April.
In comparing the weather between August and May in Rio das Ostras, we notice some interesting similarities and differences. Both months feature comparable minimum temperatures of around 13°C (55°F), while May has a slightly higher average temperature of 22°C (73°F) compared to August's average of 21°C (70°F). Interestingly, both months share the same maximum temperature of 34°C (93°F). However, May experiences more precipitation, totaling 68 mm (2.7 in) over 9 days, whereas August sees less rainfall at 53 mm (2.1 in) over 10 days. Humidity levels are also slightly higher in May at 80%, compared to 75% in August. For more detailed information, check out Rio das Ostras weather in May.
When comparing the weather in August and June, both months experience relatively mild temperatures, with August having an average of 21°C (70°F) while June is slightly warmer at 22°C (72°F). The maximum temperatures are similar, with August peaking at 34°C (93°F) compared to June's 33°C (91°F). Precipitation levels also differ; August receives 53 mm (2.1 in) over about 10 days, while June sees less rainfall at 34 mm (1.3 in) over 7 days. Humidity remains fairly high in both months, with August at 75% and June slightly higher at 78%. For a more detailed look at June weather, you can visit Rio das Ostras weather in June.
In comparing the weather of July and August, we find that both months feature similar average temperatures, with July having a minimum of 12°C and a maximum of 33°C, while August ranges from a minimum of 13°C to a maximum of 34°C. However, August experiences significantly higher precipitation, accumulating 53 mm over 10 days, compared to July's 19 mm over just 5 days. Additionally, humidity levels are slightly lower in July at 77%, compared to 75% in August. For more detailed information, you can refer to Rio das Ostras weather in July.
August typically experiences a broader range of temperatures, with minimums around 13°C (55°F) and maximums peaking at 34°C (93°F). The average temperature hovers around 21°C (70°F), accompanied by a moderate level of humidity at 75%. Precipitation in August totals 53 mm (2.1 inches) over about 10 days.
In contrast, September shows a slight increase in temperatures, with minimums at 15°C (59°F) and maximums reaching 35°C (96°F), while the average temperature rises to 23°C (74°F). Although September sees slightly higher precipitation at 66 mm (2.6 inches), it occurs over fewer days, just 8. The humidity remains consistent at 75%. For a detailed look at September weather specifics, check out Rio das Ostras weather in September.
August and October in Rio das Ostras present distinct weather patterns. In August, temperatures range from a minimum of 13°C (55°F) to a maximum of 34°C (93°F), with an average of 21°C (70°F). The month experiences about 53 mm (2.1 in) of precipitation over roughly 10 days and a humidity level of 75%. In contrast, October sees slightly higher temperatures, with minimums of 16°C (61°F) and maximums reaching 36°C (98°F). The average temperature rises to 24°C (75°F), while precipitation increases significantly to 117 mm (4.6 in) over about 15 days, and humidity remains similar at 74%. This highlights October as a warmer and wetter month compared to August. For more details, check out Rio das Ostras weather in October.
In August, the weather in Rio das Ostras is generally mild, with temperatures ranging from a minimum of 13°C (55°F) to a maximum of 34°C (93°F), and an average temperature of 21°C (70°F). The month experiences around 53 mm (2.1 in) of precipitation over 10 days, with humidity levels at 75%. In contrast, November brings warmer temperatures, with a minimum of 15°C (60°F) and a maximum reaching 36°C (98°F), averaging at 24°C (75°F). However, November is also much wetter, with total rainfall of 235 mm (9.3 in) over 18 days and slightly higher humidity at 79%. For more detailed information, you can check Rio das Ostras weather in November.
August and December in Rio das Ostras offer distinct weather experiences. August sees milder temperatures with a minimum of 13°C (55°F) and an average of 21°C (70°F), while December's temperatures are generally warmer, ranging from a minimum of 16°C (61°F) to an average of 25°C (78°F), peaking at a maximum of 34°C (93°F) for both months. Precipitation levels differ significantly, with August receiving 53 mm (2.1 in) over about 10 days, compared to December's much wetter conditions, which bring 233 mm (9.2 in) across approximately 20 days. Additionally, humidity in December is slightly higher at 81%, compared to 75% in August, creating a more humid atmosphere. For more details, you can visit Rio das Ostras weather in December.
August in Rio das Ostras brings a unique blend of warmth and mildness, setting it apart from the sweltering heat of summer months. While daytime temperatures can soar to a maximum of 34°C, the evenings offer a refreshing drop, making the average temperature a comfortable 21°C. With 53 mm of rain spread over about 10 days, this month sees slightly increased humidity levels at 75%, contributing to a refreshing coastal atmosphere. Visitors can enjoy the vibrant outdoor life, albeit with the occasional shower, making it a dynamic time to explore the beautiful landscapes. For a detailed look at the climate conditions, check out Rio das Ostras Climate.