Last updated: August 21, 2025
In April, the weather in Rio Negro, Brazil, offers a pleasant mix of warmth and refreshing rain. Temperatures typically reach a maximum of 30°C (86°F), with an average of 18°C (65°F), and can dip to a minimum of 4°C (39°F) during the cooler nights. This month sees approximately 47 mm (1.9 in) of rainfall over 5 days, contributing to the region's high humidity levels of around 85%. The combination of mild temperatures and moisture sets the stage for a vibrant and lush environment, making April an intriguing time to experience the natural beauty of Rio Negro.
In April, Rio Negro, Brazil experiences a noticeable shift in temperatures, with minimums dropping to 4°C (39°F), compared to the warmer months at the beginning of the year. The average temperature settles at a refreshing 18°C (65°F), offering a pleasant respite from the tropical heat. Despite the cooler starting point, daytime highs still reach a comfortable 30°C (86°F), showcasing a blend of cool mornings and warmer afternoons. This month marks a transition, as temperatures begin their decline toward winter, making it an ideal time for outdoor adventures amid the region's stunning natural beauty. Overall, April strikes a balance, inviting visitors to enjoy the milder climate while still embracing the warmth typical of this vibrant Brazilian locale.
April in Rio Negro, Brazil, marks a notable decline in precipitation, with only 47 mm (1.9 in) accumulated over just 5 days—a significant drop compared to the preceding months. This decrease follows a wetter early part of the year, where January saw 150 mm (5.9 in) and March 109 mm (4.3 in), characterizing the region's transition toward a drier period. As the landscape shifts towards May, precipitation begins to pick up again, yet April stands as a stark reminder of the region's alternating wet and dry cycles, suggesting an evolving climate pattern driven by seasonal changes.
In April, the humidity in Rio Negro, Brazil remains consistent at 85%, mirroring the levels seen in the previous month of March. This trend of stable humidity continues into May, when levels rise slightly to 86%. The early part of the year showcases a generally high humidity trend, with January peaking at 86% and gradually declining to 79% by August. Following this dip, humidity levels slowly creep back up in the latter months, suggesting a seasonal variation that keeps the climate moist and tropical throughout the year. Overall, April serves as a pivotal point in the humidity cycle, maintaining a balance before the slight increase later in the season.
In April, Rio Negro experiences a UV Index of 11, maintaining its status in the extreme exposure category, with a quick burn time of just 10 minutes. This marks a slight decrease from the peak indices seen earlier in the year, although caution is still essential as the sun's intensity remains high. As we transition into May and the UV Index lowers to 8, indicating a shift to very high exposure, the burn time increases to 15 minutes. This pattern reveals a gradual cooling trend, yet highlights the importance of sun protection throughout the year. For more detailed insights on UV levels, visit Rio Negro UV Index.
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April in Rio Negro, Brazil, typically greets residents and visitors with 246 hours of sunshine, a delightful respite as the rainy season approaches its peak. This month marks a noteworthy transition, showcasing a decline from the vibrant sunlight of March, which enjoys a robust 273 hours. However, compared to the preceding and subsequent months, April maintains a generous glow, outshining May’s 225 hours. The trend reveals that while sunshine varies seasonally, April’s balance strikes a beautiful chord between the Summer's exuberance and the upcoming cooler months, making it an ideal time to bask in the warmth before the rainy days begin to dominate the scene.
April in Rio Negro, Brazil, offers a moderate chance of sunny weather, with 37% likelihood of sunshine. This month sits comfortably between the relatively brighter months of February and May, both showcasing higher probabilities at 43% and 44%, respectively. Interestingly, while March dips to 29%, April marks a recovery as spring unfolds, surpassing it significantly. As we move into the mid-year, sunny opportunities begin to rise further, particularly in July, peaking with 53% chance of clear skies. Overall, April hints at the dawn of warmer days ahead, making it a pleasant time for outdoor activities amidst the emerging spring warmth.
As April arrives in Rio Negro, Brazil, daylight begins to wane, offering approximately 11 hours of sunshine each day. This shift marks a continued decline from the longer days of summer, highlighting a trend of gradually decreasing daylight that started in January. Following this peak of 13 hours in January, the daylight hours steadily dropped, hitting a notable low in May with just 10 hours. However, this pattern shifts once again as the year progresses, with daylight gradually increasing once more from August onwards, signaling the return of longer days towards the end of the year. This rhythmic change in daylight not only shapes the natural landscape but also influences the daily lives of those in Rio Negro, making April a pivotal month in the annual cycle of light.
In April, the winds in Rio Negro, Brazil, pick up slightly, maintaining an average speed of 2.6 m/s (6 mph), similar to that of February and May. This gentle breeze is part of a consistent pattern throughout the year, with wind speeds fluctuating around the same averages. Interestingly, the calmest months tend to be during the early part of the year, with March recording the lowest average wind speed at 2.4 m/s (5 mph). As the year progresses into the drier months of August and October, the winds begin to gain momentum, reaching 3.0 m/s (7 mph). This gradual climb highlights the seasonal shifts inherent in the region, where the changing winds echo the vibrant rhythms of Brazil's natural landscape.
Weather in Rio Negro varies notably across the year, with each month offering distinct climate conditions. This page compares April’s weather to other months in Rio Negro, focusing on differences in temperature, rainfall, humidity, and UV levels.
When comparing the weather in April and January, a few notable differences emerge. April sees a minimum temperature of 4°C (39°F) and an average of 18°C (65°F), with a maximum reaching 30°C (86°F). In contrast, January experiences milder temperatures with a minimum of 13°C (57°F), an average of 22°C (72°F), and a peak of 34°C (93°F). Precipitation levels also vary significantly, with April receiving about 47 mm (1.9 in) over just five days, while January has a much wetter profile, totaling 150 mm (5.9 in) across 18 days. Additionally, humidity remains quite similar in both months, hovering around 85% in April and 86% in January. For more detailed insights, visit Rio Negro weather in January.
In comparing the weather of April and February, we see distinct differences in both temperature and precipitation. April features a milder temperature range with a minimum of 4°C (39°F) and a maximum of 30°C (86°F), leading to an average temperature of 18°C (65°F). In contrast, February is considerably warmer, with temperatures ranging from a minimum of 11°C (51°F) to a maximum of 34°C (94°F), averaging 21°C (71°F).
When it comes to precipitation, April receives less rainfall, totaling 47 mm (1.9 in) over about 5 days, while February experiences significantly more, with 124 mm (4.9 in) spread across 15 days. Both months have high humidity levels, with April at 85% and February at 83%. For those interested in detailed weather patterns, you can explore more about February's climate at Rio Negro weather in February.
April and March present contrasting weather patterns. In April, temperatures range from a minimum of 4°C (39°F) to a maximum of 30°C (86°F), with an average temperature of 18°C (65°F). The month sees less precipitation, totaling 47 mm (1.9 in) over just 5 days, while maintaining a high humidity of 85%. In contrast, March offers warmer temperatures, with a minimum of 12°C (53°F) and a maximum of 32°C (89°F), averaging 21°C (70°F). However, March is significantly wetter, receiving 109 mm (4.3 in) of rainfall across 15 days, while also featuring the same humidity level. For more detailed information, you can check Rio Negro weather in March.
April and May offer a blend of mild temperatures and varying precipitation in the region. In April, temperatures range from a minimum of 4°C (39°F) to a maximum of 30°C (86°F), with an average of 18°C (65°F). The month sees about 47 mm (1.9 in) of precipitation over 5 days, with humidity levels around 85%. In contrast, May experiences slightly cooler temperatures, with daily lows of 2°C (35°F) and highs peaking at 28°C (83°F), averaging 16°C (61°F). Precipitation increases in May to 87 mm (3.4 in) across 8 days, accompanied by a nearly identical humidity level of 86%. For more detailed insights into the weather, visit Rio Negro weather in May.
April tends to be warmer than June, with temperatures ranging from a minimum of 4°C to a maximum of 30°C, while June's temperatures are cooler, with a minimum of 1°C and a maximum of 26°C. April experiences less precipitation, averaging 47 mm over 5 days, whereas June sees a significant increase in rainfall at 118 mm over 10 days. Both months share similar humidity levels at 85%, but the cooler temperatures and higher rainfall in June create a distinct weather pattern. For those interested in further details, here is a helpful resource: Rio Negro weather in June.
April and July display contrasting weather patterns. April typically enjoys warmer temperatures, with averages ranging from a cool 4°C (39°F) to a comfortable 30°C (86°F), compared to July's cooler range of -4°C (26°F) to 26°C (79°F) and an average of 14°C (57°F). While April experiences more precipitation, totaling 47 mm (1.9 in) over about five days, July has less rainfall at 27 mm (1.0 in) across four days. Humidity levels are also slightly higher in April at 85%, compared to July’s 80%. For more specific details on July weather, check Rio Negro weather in July.
April and August present quite distinct weather patterns. In April, temperatures typically range from a minimum of 4°C (39°F) to a maximum of 30°C (86°F), with an average of 18°C (65°F). The month sees about 47 mm (1.9 in) of precipitation over approximately 5 days, along with high humidity levels of 85%. In contrast, August experiences a broader temperature range, with a minimum of -1°C (30°F) and a maximum very similar to April at 30°C (87°F), but with a lower average of 15°C (59°F). August also brings more precipitation, totaling 79 mm (3.1 in) over 7 days, and a slightly lower humidity level of 79%. For more detailed information, you can check out Rio Negro weather in August.
April and September both showcase mild weather, but there are notable differences between the two months. In April, temperatures range from a cool 4°C (39°F) to a warm 30°C (86°F), with an average of 18°C (65°F), while September enjoys slightly higher temperatures, with a minimum of 5°C (42°F) and a maximum of 32°C (90°F), also averaging 18°C (65°F). Precipitation is more prevalent in September, with 69 mm (2.7 in) of rainfall over 8 days compared to April’s 47 mm (1.9 in) over 5 days. Humidity levels are fairly consistent, at 85% in April and 82% in September. For more detailed insights, you can check out Rio Negro weather in September.
April and October present contrasting weather patterns despite having similar average temperatures. In April, temperatures range from a low of 4°C (39°F) to a high of 30°C (86°F), with an average of 18°C (65°F), and the month experiences relatively moderate precipitation of 47 mm (1.9 in) over about 5 days. In contrast, October boasts slightly higher minimum temperatures at 6°C (44°F) and maximums reaching up to 34°C (93°F), while maintaining the same average of 18°C (65°F). However, October is significantly wetter, with 147 mm (5.8 in) of rainfall spread across 14 days, making the atmosphere feel more humid at 82%. For more detailed information, you can check Rio Negro weather in October.
April and November present a contrast in weather patterns, despite their similar average temperatures. In April, temperatures range from a chilly 4°C (39°F) to a warm 30°C (86°F), with an average of 18°C (65°F) and relatively low precipitation of 47 mm (1.9 in) over just 5 days. In contrast, November has a slightly milder minimum temperature of 8°C (46°F) and reaches similar maxima of up to 31°C (89°F), with an average temperature of 19°C (67°F). However, November is much wetter, experiencing 103 mm (4.1 in) of rain on about 13 days, resulting in a high humidity level of 86%. For more specific insights into the weather conditions in November, you can view the details at Rio Negro weather in November.
In April, the weather in Rio Negro is generally milder, with temperatures ranging from a minimum of 4°C (39°F) to a maximum of 30°C (86°F) and an average of 18°C (65°F). The month experiences some rainfall, with a total precipitation of 47 mm (1.9 in) over about 5 days, and humidity levels are at 85%. In contrast, December brings warmer temperatures, with a minimum of 11°C (52°F), an average of 21°C (70°F), and a peak of 34°C (93°F). Rainfall increases significantly during this month, with 137 mm (5.4 in) spread over 17 days, and humidity slightly rises to 88%. For a more detailed look at the December weather, visit Rio Negro weather in December.
As April settles over Rio Negro, the weather brings a delightful transition from the sweltering heat of the summer months. With maximum temperatures reaching around 30°C, days are pleasantly warm, while the average temperature cools to 18°C, creating a comfortable atmosphere for outdoor activities. This month is also marked by increased humidity at 85%, complemented by brief rainfall events occurring on about five days, totaling around 47 mm. This refreshing shift from the dry season offers a unique opportunity to experience the lush greenery, making April a charming time to explore the region. For a deeper understanding of seasonal variations, visit Rio Negro Climate.