Last updated: August 21, 2025
August in Niteroi, Brazil showcases a pleasant climate with temperatures ranging from a maximum of 32°C (90°F) to a minimum of 14°C (58°F), averaging 21°C (71°F). While the warmth is inviting, visitors should be prepared for occasional rain, with 68 mm (2.7 in) of precipitation occurring over 11 days throughout the month. The humidity level hovers around 73%, contributing to the tropical atmosphere that defines this coastal gem. With its blend of sunny days and refreshing showers, August presents a unique charm that appeals to both locals and travelers alike.
In August, Niteroi experiences a refreshing shift in temperatures as winter continues to set in. The city sees minimums dipping to a cool 14°C (58°F), while average temperatures hover around a comfortable 21°C (71°F). Daytime makes for pleasant outings with highs reaching 32°C (90°F), mirroring the tail end of the dry season. Compared to the sweltering summer months of January and February, where highs soar to 34-35°C (94-95°F), August offers a welcomed respite, making it an ideal time for outdoor activities amidst the lingering warmth. This slight chill and comfortable average reflect the overall trend towards a milder climate as winter sets in, positioning August as a perfect month for both locals and visitors to enjoy Niteroi's vibrant ambiance.
In August, Niteroi experiences 68 mm (2.7 in) of precipitation over approximately 11 days, marking a distinctive shift towards drier conditions compared to the preceding months. While this amount is notably higher than the levels recorded in June and July, it signals a gradual transition from the summer's wettest months, where precipitation peaks in March with 138 mm (5.4 in). As the year progresses, the rainfall begins to taper off, suggesting that August acts as a bridge between the heavy summer rains and the milder conditions of early spring. This trend indicates a changing climate as Niteroi prepares to embrace drier days ahead, while still capturing the tail end of its wetter season.
In August, Niteroi, Brazil, experiences a noticeable decline in humidity, dropping to 73%. This decrease is part of a broader trend throughout the winter months, where humidity levels gradually lessen, having started at an impressive 85% in January and maintaining similar levels through February and March. As the year progresses, the humidity continues to dip, reaching its lowest point in October at 61%. This shift offers a breath of fresh air as the seasons change, making August a more comfortable time for outdoor activities compared to the lush, damp early months of the year. Overall, Niteroi's humidity displays a distinct downward trajectory as it transitions from the high levels typical of summer to more moderate conditions by late fall.
As summer transitions into early fall in Niteroi, Brazil, August sees a UV Index of 9, categorized as very high, with a burn time of just 15 minutes. This marks a slight improvement from the peak of summer months like January through March, which all recorded extreme levels of UV exposure, highlighting the region’s intense sun. Interestingly, the UV Index begins to rise again in September, reaching 11, indicating that while August offers a brief reprieve, sun safety remains a priority throughout the year. As outdoor enthusiasts enjoy Niteroi's beautiful beaches, it’s crucial to stay informed about UV levels to protect against skin damage. For more detailed insights on UV trends in this vibrant city, visit Niteroi UV Index.
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In Niteroi, Brazil, August brings a delightful respite with 275 hours of sunshine, fitting snugly into the vibrant summer months. As winter gives way to spring, the sun’s embrace does not linger as long as in December, which boasts a dazzling 318 hours of sunlight, yet still outshines the cooler, cloudier months of June and July. The trend shows a slight dip from the sunny peak of March at 309 hours, but with sunlight hours steadily rising from the chill of mid-year, August remains a brilliant choice for those seeking warmth and light. This gradual transition reflects not only the beauty of Niteroi's climate but also the comforting consistency of summer shining through as the year unfolds.
In Niteroi, Brazil, August marks a significant uptick in sunny weather, boasting a 60% chance of sunshine. This increase is part of a broader trend observed from mid-year onwards, where the likelihood of clear skies rises steadily from a modest 36% in January to a peak in August. Following this sunny splendor, the probability of sunshine tapers off into the early months of spring, suggesting that those seeking bright days should plan their visits in the peak of winter, when the sun shines its brightest in Niteroi. The sunny disposition of August not only highlights the potential for delightful days outdoors but also sets the stage for the vibrant coastal lifestyle that the region is known for.
In Niteroi, Brazil, August marks a subtle transition in daylight duration, with 11 hours of sunshine welcoming the tail end of winter. This month sees a slight rebound from the deeper days of winter seen in June and July, where daylight lingered at just 10 hours. As the year progresses, the daylight gradually elongates, culminating in the brighter months ahead, where November and December shine with 13 hours amidst the summer. The gradual increase from August's 11 hours to the vibrant daylight in the latter part of the year reflects a rhythm of seasonal change, hinting at the warmth and brightness to come.
In Niteroi, Brazil, August ushers in a refreshing breeze, boasting an average wind speed of 3.7 m/s (8 mph), making it one of the more vibrant months for wind activity. As the year progresses, we observe a subtle upward trend in wind speeds, with August marking a peak just before the transition into the early spring months of September and October, which continue to see increases, reaching 4.0 m/s (9 mph) and 4.2 m/s (9 mph), respectively. This gentle escalation offers a delightful contrast to the calmer conditions earlier in the year, particularly during the summer months of January and February, where average speeds dip below 3 m/s (7 mph). The consistent breezes in August not only enhance the climate but also set the stage for enjoyable outdoor activities, reflecting the vibrant spirit of Niteroi's coastal allure.
Weather in Niteroi varies notably across the year, with each month offering distinct climate conditions. This page compares August’s weather to other months in Niteroi, focusing on differences in temperature, rainfall, humidity, and UV levels.
In comparing the weather between August and January, distinct differences are evident. August features a milder temperature range with minimums around 14°C (58°F) and maximums reaching 32°C (90°F), while January experiences higher temperatures, with minimums of 21°C (70°F) and maximums climbing to 34°C (94°F). Precipitation levels are slightly higher in January at 91 mm (3.6 in) compared to 68 mm (2.7 in) in August, although both months have similar numbers of rainy days at 11. Additionally, humidity is notably greater in January at 85%, compared to August's 73%, making January feel more tropical. For more details on January weather, be sure to check Niteroi weather in January.
August and February present quite contrasting weather patterns. In August, temperatures range from a minimum of 14°C (58°F) to a maximum of 32°C (90°F), with an average temperature of 21°C (71°F). In contrast, February experiences warmer temperatures, with a minimum of 21°C (71°F), an average of 27°C (80°F), and a high of 35°C (95°F). Alongside the higher temperatures, February also sees more rainfall, accumulating 119 mm (4.7 in) over 15 days compared to August's 68 mm (2.7 in) over 11 days. Additionally, February's humidity is notably higher at 85%, versus 73% in August. For more details on the weather during this month, you can visit Niteroi weather in February.
August and March exhibit notably different weather patterns. August typically sees milder temperatures, with a minimum of 14°C (58°F) and a maximum of 32°C (90°F), while March features warmer conditions, ranging from 20°C (69°F) to a peak of 34°C (94°F). Precipitation levels are higher in March, totaling 138 mm (5.4 in) over 16 days, compared to August's 68 mm (2.7 in) across 11 days. Additionally, humidity is greater in March at 86%, compared to August's 73%, making the latter month feel less muggy. For more information on specific weather details, you can explore Niteroi weather in March.
When comparing the weather in August and April, it’s evident that April is generally warmer, with average temperatures ranging from a minimum of 19°C (67°F) to a maximum of 34°C (93°F), while August has a milder range with minimums at 14°C (58°F) and maximums reaching 32°C (90°F). April also sees slightly higher precipitation levels at 81 mm (3.2 in) over 14 days compared to August's 68 mm (2.7 in) over 11 days. Additionally, the humidity is higher in April at 83% compared to 73% in August. For a more detailed comparison of Niteroi's weather in April, visit Niteroi weather in April.
When comparing the weather in August and May, it's clear that both months exhibit warm temperatures and a fair amount of precipitation. In August, temperatures range from a minimum of 14°C (58°F) to a maximum of 32°C (90°F), with an average of 21°C (71°F). The month receives about 68 mm (2.7 inches) of rainfall over 11 days, accompanied by a humidity level of 73%. In contrast, May is slightly warmer, with temperatures ranging from 16°C (61°F) to 33°C (91°F) and averaging 23°C (74°F). It experiences a bit more precipitation at 73 mm (2.9 inches) over 10 days, but has a higher humidity level of 81%. For a more detailed look at the weather in May, check out Niteroi weather in May.
When comparing the weather in June and August, we can see notable differences in temperature and precipitation. June experiences slightly cooler temperatures with a minimum of 16°C (62°F) and an average of 22°C (73°F), while August sees a broader range with a minimum of 14°C (58°F) and a maximum of 32°C (90°F), allowing for warmer days. Precipitation levels are lower in June, with 39 mm (1.5 in) over 9 days, compared to August's 68 mm (2.7 in) over 11 days, indicating that August tends to be wetter. Humidity is also on the higher side in June at 80%, compared to 73% in August, making June feel more humid despite similar average temperatures. For a closer look at June weather specifics, you can check out Niteroi weather in June.
In comparing the weather between July and August, both months feature similar average temperatures, with a minimum of 15°C (59°F) in July and 14°C (58°F) in August, and a maximum of 32°C (90°F) for both months. However, August experiences significantly more precipitation, totaling 68 mm (2.7 in) over 11 days, compared to July's 35 mm (1.4 in) over just 6 days. Additionally, humidity levels are slightly lower in August at 73%, compared to 76% in July. For a more detailed look at July weather patterns, you can check out Niteroi weather in July.
August and September offer distinct yet pleasant weather contrasts. In August, temperatures range from a minimum of 14°C (58°F) to a maximum of 32°C (90°F), with an average of 21°C (71°F). The month experiences moderate rainfall, totaling 68 mm (2.7 in) across 11 days, and humidity levels at 73%. In comparison, September brings slightly warmer temperatures, with a minimum of 17°C (63°F) and a maximum of 34°C (94°F), averaging 23°C (74°F). This month sees reduced rainfall of 48 mm (1.9 in) over 8 days and lower humidity at 68%. To learn more about the weather specifics in September, you can visit Niteroi weather in September.
In August, the weather typically features a minimum temperature of 14°C (58°F) and averages around 21°C (71°F), peaking at a maximum of 32°C (90°F). With an average precipitation of 68 mm (2.7 in) over 11 days and a humidity level of 73%, August can feel quite muggy. In contrast, October experiences somewhat warmer conditions, with minimum temperatures rising to 17°C (63°F), a higher average of 24°C (75°F), and maximums reaching up to 36°C (97°F). The month brings increased rainfall as well, with 86 mm (3.4 in) spread over 14 days, yet it also sees a more comfortable humidity level of 61%. For more detailed insights, check out Niteroi weather in October.
August and November exhibit notable differences in weather patterns. In August, temperatures range from a minimum of 14°C (58°F) to a maximum of 32°C (90°F), with an average of 21°C (71°F) and lower overall precipitation at 68 mm (2.7 in) over 11 days. The humidity reaches 73%. In contrast, November features warmer temperatures with a minimum of 18°C (64°F) and a maximum of 34°C (94°F), averaging 24°C (75°F). Additionally, November experiences increased precipitation, totaling 115 mm (4.5 in) over 16 days, with humidity remaining relatively stable at 72%. For a more detailed overview, check out the Niteroi weather in November.
In comparing the weather between August and December, we see some distinct differences. August tends to be cooler, with average temperatures ranging from a minimum of 14°C (58°F) to a maximum of 32°C (90°F), while December is generally warmer, with temperatures ranging from 19°C (67°F) to a high of 33°C (92°F). Additionally, December experiences more precipitation, with 121 mm (4.8 in) over 15 days compared to August's 68 mm (2.7 in) over 11 days, contributing to a slightly higher humidity level of 75%. For more detailed insights into December weather, please refer to this link: Niteroi weather in December.
August in Niteroi presents a delightful transition from the cooler winter months, with warmer temperatures and a noticeable uptick in humidity that enhances the tropical ambiance. Unlike the cooler, drier weeks that characterize earlier months, August enjoys maximum daytime heat, inviting locals and visitors alike to enjoy outdoor activities. However, it's worth noting that this month is also marked by sporadic rain, contributing to a total of around 11 rainy days, which can bring a refreshing contrast to the summer heat. Overall, August sets the stage for the approaching spring with a blend of warmth and occasional showers. For more detailed information about what to expect throughout the year, explore Niteroi Climate.