Last updated: August 21, 2025
In July, Rio Negro, Brazil experiences a unique blend of weather conditions that showcase the region's diverse climate. With a maximum temperature reaching 26°C (79°F) and an average low of 14°C (57°F), visitors can expect mild temperatures perfect for outdoor exploration. Although nighttime can dip to a minimum of -4°C (26°F), the days are generally comfortable. Rain is a possibility, with 27 mm (1.0 in) of precipitation spread over four days, contributing to a humidity level of 80%, which adds a refreshing atmosphere to the tropical environment. Whether you're navigating the lush landscapes or enjoying local culture, July offers a unique and invigorating experience in this vibrant part of Brazil.
In July, temperatures in Rio Negro, Brazil take a notable dip, marking it as one of the coolest months of the year. With a minimum temperature of -4°C (26°F), the region experiences a winter chill that contrasts sharply with the warmth found in the earlier months. The average temperature settles at 14°C (57°F), while daytime highs reach a mild 26°C (79°F). This month stands out not only due to its cool average but also because it features the lowest minimum temperature of the year. As the region transitions from the frosty grips of winter to the gradual warming of spring, July serves as a reminder of Rio Negro's diverse climate, where cooler periods are embraced before the return of warmer days.
In July, Rio Negro experiences a notable drop in precipitation, with only 27 mm (1.0 in) of rain recorded over a mere 4 days. This stark contrast to the heavier rains of earlier months, such as January's 150 mm (5.9 in) and June's 118 mm (4.6 in), marks July as the driest month of the year. The significant reduction in rainfall not only reflects the region’s seasonal patterns but also sets the stage for a brief respite before the upcoming August rains, which typically see amounts rising again to 79 mm (3.1 in). This seasonal ebb and flow highlight the dynamic climate of Rio Negro, where rain can change rapidly, influencing both the environment and local activities.
In July, Rio Negro, Brazil, experiences a notable dip in humidity, dropping to 80%, the lowest level of the year. This decline follows a season of consistently high humidity, with January peaking at 86% and a slight easing through the mid-year months. Interestingly, as July transitions into August, humidity continues its downward trend, reaching 79%. This seasonal shift highlights a pattern where the tropical climate of Rio Negro tends to maintain high humidity during the first half of the year, only to gradually decrease as winter approaches. As humidity levels fluctuate, the city prepares for the subsequent increase in moisture, returning to higher percentages by November.
In July, the UV Index in Rio Negro, Brazil registers at 6, placing it in the high exposure category with a burn time of 25 minutes. This is a notable decline from the intense levels experienced earlier in the year, where the UV Index peaked at 15 in both January and February, indicating extreme exposure with a burn time of just 10 minutes. Throughout the cooler months of May and June, the UV Index gradually decreased, showcasing the region's shift towards more moderate sun exposure. As summer approaches again in August, expect a rise to a very high UV Index of 9. For more detailed insights on the UV Index and its implications, visit Rio Negro UV Index.
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In July, Rio Negro, Brazil, basks in 261 hours of glorious sunshine, showcasing the region's appeal as a vibrant destination. As winter gives way to a mild climate, this month contributes to a string of high sunlight hours, following the peak brightness of March with 273 hours and the pleasantly sunny February at 266 hours. Although July's sunshine slightly dips from this earlier peak, it still stands strong compared to the cooler months of June with 206 hours and May at 225 hours. The overall trend indicates that Rio Negro enjoys a generous abundance of sunlight, especially in the first half of the year, welcoming visitors to revel in its sunny warmth before the year closes with an impressive 291 hours in December.
In Rio Negro, Brazil, July stands out with a 53% chance of sunny weather, making it one of the sunniest months of the year. This uptick in sunshine follows a pattern of increasing likelihood from the preceding months, especially notable as the region transitions from the cooler, cloudier days of June, which offers only a 31% chance of sunlight. Notably, July's sunshine not only surpasses the bleakness of January and October but also outshines earlier months like March and April, reflecting a delightful mid-year peak. As the winter chill sets in, this trend signals a perfect opportunity for those seeking outdoor escapades under the sun.
In Rio Negro, Brazil, July experiences 10 hours of daylight, maintaining the shorter days characteristic of mid-winter. This month marks a plateau in daylight hours that began in May, continuing a trend of gradual decline from the long, sun-filled days of January and November, each boasting 13 hours of daylight. As the year progresses, daylight begins to creep back upward in August, signaling a slow shift towards longer days once again. The rhythm of daylight in Rio Negro remains harmonious, with seasonal changes that reflect the beauty of the region's climate throughout the year.
In July, the winds in Rio Negro, Brazil exhibit a gentle consistency with an average speed of 2.6 m/s (6 mph). This mirrors the slight fluctuations seen in the preceding months, showcasing a stable atmospheric pattern that is characteristic of the region during mid-winter. While July's winds are among the calmest of the year, they effortlessly transition into a slight uptick in August, when speeds rise to 3.0 m/s (7 mph). The overall trend reveals a yearly rhythm where the winds gradually shift towards their peak in the later months, creating an inviting backdrop for outdoor activities as the seasons change. Each month, the averages emphasize the mild nature of Rio Negro's climate, making it an ideal destination for those seeking a serene and pleasant escape.
Weather in Rio Negro varies notably across the year, with each month offering distinct climate conditions. This page compares July’s weather to other months in Rio Negro, focusing on differences in temperature, rainfall, humidity, and UV levels.
In July, the weather features a much cooler temperature range, with minimums dipping to -4°C (26°F) and maximums reaching 26°C (79°F), resulting in an average of 14°C (57°F). Precipitation is relatively low, averaging 27 mm (1.0 in) over just four days, while humidity hovers around 80%. In contrast, January offers much warmer conditions, with temperatures ranging from a minimum of 13°C (57°F) to a maximum of 34°C (93°F) and an average of 22°C (72°F). However, January is also significantly wetter, with rainfall totaling 150 mm (5.9 in) across 18 days, and humidity slightly higher at 86%. For a more detailed look at January weather, you can check Rio Negro weather in January.
July and February present stark contrasts in weather. In July, temperatures range from a chilly -4°C (26°F) at night to a pleasant 14°C (57°F) during the day, peaking at 26°C (79°F). The month sees relatively low precipitation with only 27 mm (1.0 in) over 4 days, and humidity levels sit at 80%. In contrast, February offers much warmer conditions, with minimum temperatures at 11°C (51°F), averaging 21°C (71°F), and highs reaching a sweltering 34°C (94°F). This month is significantly wetter, with 124 mm (4.9 in) of rainfall spread over 15 days and a slight increase in humidity to 83%. For more detailed information on February weather, you can visit Rio Negro weather in February.
In comparing the weather patterns of July and March, it becomes evident that July experiences much cooler temperatures, with a minimum of -4°C (26°F) and an average of 14°C (57°F), peaking at 26°C (79°F). Precipitation during this month is relatively low, at 27 mm (1.0 in), and is spread over just 4 days, accompanied by humidity levels around 80%. In stark contrast, March is significantly warmer, with a minimum temperature of 12°C (53°F) and averaging 21°C (70°F), reaching a maximum of 32°C (89°F). This month sees considerable rainfall, totaling 109 mm (4.3 in) across 15 days, and slightly higher humidity at 85%. For a detailed overview of the weather in March, you can refer to Rio Negro weather in March.
In comparing the weather of July and April, we can see notable differences in both temperature and precipitation patterns. July experiences cooler temperatures, with a minimum of -4°C (26°F) and a maximum of 26°C (79°F), while April showcases warmer conditions, ranging from a minimum of 4°C (39°F) to a maximum of 30°C (86°F). Additionally, April has a higher average temperature of 18°C (65°F) compared to July's average of 14°C (57°F). Regarding precipitation, April sees more rainfall, totaling 47 mm (1.9 in) over 5 days, in contrast to July’s 27 mm (1.0 in) across 4 days. Humidity levels remain relatively similar, with April at 85% and July at 80%. For more detailed information about the weather in April, check out Rio Negro weather in April.
In comparing the weather of July and May, July tends to be cooler with an average temperature of 14°C (57°F) and a maximum of 26°C (79°F), while May sees slightly warmer conditions, averaging 16°C (61°F) with highs reaching 28°C (83°F). Precipitation is significantly lower in July, with only 27 mm (1.0 in) over 4 days compared to May’s 87 mm (3.4 in) over 8 days. Humidity levels are similar in both months, with July at 80% and May slightly higher at 86%. For more insights on May weather, you can check out Rio Negro weather in May.
In comparison to June, July experiences slightly cooler temperatures with a minimum of -4°C (26°F) and an average of 14°C (57°F), while June has a minimum of 1°C (33°F) and an average of 15°C (59°F). Both months share the same maximum temperature of 26°C (79°F). Precipitation is significantly lower in July, with only 27 mm (1.0 in) over 4 days, compared to June's 118 mm (4.6 in) over 10 days. Additionally, humidity remains fairly stable, with July at 80% and June at 85%. For a more detailed look at June weather, visit Rio Negro weather in June.
In July, the weather features a minimum temperature of -4°C (26°F) and an average of 14°C (57°F), peaking at a maximum of 26°C (79°F). Precipitation during this month is relatively low, totaling 27 mm (1.0 in) over four days, with humidity levels around 80%.
In contrast, August sees slightly warmer temperatures, with a minimum of -1°C (30°F), an average of 15°C (59°F), and a maximum of 30°C (87°F). However, the month also experiences increased rainfall, with precipitation reaching 79 mm (3.1 in) over seven days, and humidity remaining comparable at 79%. For further details on weather trends, you can check Rio Negro weather in August.
In July, the weather is characterized by a more moderate climate, with average temperatures ranging from a chilly minimum of -4°C (26°F) to a pleasant maximum of 26°C (79°F). The month experiences relatively low precipitation, totaling 27 mm (1.0 in) over just 4 days, with humidity around 80%. In contrast, September sees a notable increase in warmth, with temperatures varying from a minimum of 5°C (42°F) to a maximum of 32°C (90°F) and an average of 18°C (65°F). However, this month experiences higher rainfall, accumulating 69 mm (2.7 in) over 8 days, alongside a slight rise in humidity to 82%. For a detailed overview, you can check Rio Negro weather in September.
In July, the weather features a cooler temperature range, with minimums dipping to -4°C (26°F) and maximums reaching a comfortable 26°C (79°F), making for an average of 14°C (57°F). The month sees relatively low precipitation of 27 mm (1.0 in) over just 4 days, with humidity at 80%.
In contrast, October brings significantly warmer temperatures, with minimums rising to 6°C (44°F) and maximums soaring to 34°C (93°F), contributing to a much higher average of 18°C (65°F). However, October is wetter, with precipitation totaling 147 mm (5.8 in) spread over 14 days, and humidity slightly increasing to 82%. For more detailed insights on October's weather, visit Rio Negro weather in October.
In comparing the weather between July and November, we see noticeable differences. July features cooler temperatures, with an average of 14°C (57°F) and a maximum of 26°C (79°F), while November is warmer, boasting an average of 19°C (67°F) and peaks reaching 31°C (89°F). Additionally, July has relatively low precipitation at 27 mm (1.0 in) over just 4 days, whereas November experiences much wetter conditions, with 103 mm (4.1 in) of rain across 13 days. Humidity levels also rise slightly from July's 80% to November's 86%, contributing to a more humid feel in late autumn. For more detailed information, you can check Rio Negro weather in November.
The weather comparison between July and December reveals a significant shift in conditions. In July, temperatures range from a chilly minimum of -4°C (26°F) to a comfortable average of 14°C (57°F), peaking at a pleasant 26°C (79°F). Precipitation is relatively low at 27 mm (1.0 in) over just four days, with humidity levels sitting at 80%. In contrast, December experiences much warmer temperatures, with a minimum of 11°C (52°F), an average of 21°C (70°F), and a maximum reaching a scorching 34°C (93°F). However, it also sees a substantial increase in rainfall, totaling 137 mm (5.4 in) across 17 days, and humidity rises slightly to 88%. For more details on December weather, visit Rio Negro weather in December.
July in Rio Negro stands out with its cool temperatures and relatively low precipitation compared to other months. While you can expect some chilly nights dipping down to near freezing, the daytime warmth offers a comfortable respite, making it a unique time of year. The 80% humidity adds a touch of crispness to the air, but with only four rainy days and a modest total of 27 mm of rainfall, July is generally drier, positioning it favorably for outdoor activities. This refreshing mid-winter climate contrasts sharply with the warmer, more humid conditions typical of other months. For those curious about the annual climate patterns, visit Rio Negro Climate for more detailed insights.