Last updated: August 21, 2025
In April, Rio das Ostras, Brazil experiences a vibrant climate, marked by a maximum temperature soaring to 35°C (96°F) and a pleasant average of 24°C (76°F). As the days warm, the nights remain cooler with a minimum of 16°C (62°F), creating a comfortable atmosphere for both locals and visitors. This month witnesses precipitation, totaling 73 mm (2.9 in) over about 12 days, contributing to the region's lush landscape. Coupled with an humidity level of 82%, April's weather embodies the essence of tropical bliss, perfect for beach outings and outdoor adventures amidst refreshing showers.
In April, Rio das Ostras begins to transition into milder temperatures, offering a refreshing change from the peak heat of the earlier months. The average temperature dips to a comfortable 24°C (76°F), while the daily lows start at 16°C (62°F), signaling the onset of autumn. Despite this cooling trend, daytime highs can still reach 35°C (96°F), retaining a taste of summer’s warmth. This harmonious balance between warm days and cooler nights creates an inviting atmosphere for both locals and visitors, making April an ideal time to explore the beauty and charm of this coastal gem.
In April, Rio das Ostras experiences a noticeable dip in rainfall, with precipitation amounting to just 73 mm (2.9 in) over approximately 12 days. This marks a significant reduction compared to the preceding months, where January through March saw heavier downpours, with February peaking at 190 mm (7.5 in). The trend of decreasing rainfall continues into May, making April a transitional month as the region begins to shift from its rainy season towards drier conditions. This pattern hints at the gradual arrival of winter, where precipitation steadily decreases, providing a brief respite before the heavier rains return later in the year.
In April, Rio das Ostras experiences a slight dip in humidity, reaching 82%. This marks a continuation of the gradual decline observed since the height of summer, where January and February boast humidity levels of 85% and 86%, respectively. As the year progresses, humidity levels steadily decrease, with May witnessing an even lower level at 80%, paving the way for the drier months ahead, particularly in the winter. This trend of reduced humidity not only enhances the coastal city's inviting atmosphere but also offers a more comfortable experience for visitors and residents alike as they transition into the cooler months of the year.
In April, Rio das Ostras experiences a UV Index of 11, categorized as extreme, which necessitates a cautious approach to sun exposure with a burn time of just 10 minutes. This month marks a slight decline from the peak indices of earlier months, where January to March boasted indices of 16, 15, and 13, respectively. Despite this small drop, April still demands vigilance from sun-seekers, indicating that the dangers of UV radiation remain significant. As the season transitions into May, which sees a more manageable UV Index of 8 categorized as very high, it's vital to stay informed about the UV trends throughout the year. For comprehensive information on UV conditions, visit Rio das Ostras UV Index.
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In April, Rio das Ostras basks in an impressive 302 hours of sunshine, contributing to a vibrant atmosphere that welcomes both locals and tourists. This month retains a strong position among the sunniest of the year, edging slightly below the peak of March’s 322 hours. As spring unfolds, Rio da Ostras transitions smoothly from the more sun-drenched earlier months, maintaining above-average sunlight until June, where it dips to 285 hours. The trend reveals a delightful consistency in daylight, making April an ideal time for outdoor activities and enjoying the captivating natural beauty of Brazil’s coast.
April marks a delightful shift in weather patterns in Rio das Ostras, Brazil, with a 55% chance of sunny days. This represents a notable increase from the preceding months, reflecting a transition towards brighter skies as summer approaches. Following March's 48% likelihood, April's sun-soaked days signal the onset of a more favorable spring, paving the way for the sunnier months ahead, such as June and July, which boast probabilities as high as 66%. As the year progresses, travelers and locals alike can look forward to enjoying the vibrant outdoor life that these sunnier conditions bring.
In Rio das Ostras, Brazil, daylight duration begins to diminish as April rolls in, offering just 11 hours of sunlight. This marks a slight decrease from the 12 hours seen in the preceding months of January through March. The trend continues into May, where daylight remains consistent at 11 hours, signaling the onset of shorter days as the year progresses. From June to July, sunlight wanes further to a modest 10 hours, before gradually returning to 11 hours in August and September. As the months unfold, daylight duration fluctuates, painting a vivid picture of the region’s seasonal transitions, with longer days returning in October and peaking again toward the end of the year. This rhythm of daylight reflects the subtropical climate's gentle shift, offering a rich tapestry of light and shadow throughout the year.
In April, the coastal breezes of Rio das Ostras, Brazil begin to stir as the average wind speed reaches 2.9 m/s (6 mph). This moderate wind offers a refreshing contrast to the calmer months of February and March, which both recorded a gentle 2.4 m/s (5 mph). As the year unfolds, April’s breezes set the stage for an increase in wind speeds through the vibrant summer months, with August peaking at 3.4 m/s (8 mph), followed closely by September at 3.7 m/s (8 mph). The consistent pattern of gentle winds each April provides the ideal backdrop for outdoor activities, inviting locals and visitors alike to revel in the beauty of this coastal paradise.
Weather in Rio das Ostras varies notably across the year, with each month offering distinct climate conditions. This page compares April’s weather to other months in Rio das Ostras, focusing on differences in temperature, rainfall, humidity, and UV levels.
When comparing the weather in April and January, it is clear that both months offer warm temperatures, but with some notable differences. In April, the minimum temperature is slightly lower at 16°C (62°F), with an average of 24°C (76°F) and a maximum of 35°C (96°F). This month sees less precipitation, totaling 73 mm (2.9 in) over 12 days, and a relative humidity of 82%. In contrast, January experiences higher temperatures, starting at a minimum of 20°C (68°F) and reaching an average of 27°C (81°F) with a peak of 36°C (97°F). However, it also has significantly more rainfall, accumulating 127 mm (5.0 in) also over 12 days, and a slightly higher humidity level of 85%. For a closer look at the specifics, you can check Rio das Ostras weather in January.
When comparing the weather between April and February, it becomes evident that February is generally warmer and wetter. February boasts an average temperature of 26°C (79°F), with minimums reaching 20°C (68°F) and maximums at 36°C (97°F). In contrast, April sees slightly cooler averages, ranging from a minimum of 16°C (62°F) to a maximum of 35°C (96°F) with an average temperature of 24°C (76°F). Additionally, February experiences significantly higher precipitation, totaling 190 mm (7.5 in) over 20 days, compared to April's 73 mm (2.9 in) over 12 days. Humidity levels are also slightly higher in February at 86%, versus April's 82%. For more detailed insights into the weather in February, check Rio das Ostras weather in February.
In comparing the weather of April and March, we observe that April typically experiences a slightly lower minimum temperature of 16°C (62°F) and an average temperature of 24°C (76°F), while March has a higher minimum temperature of 19°C (66°F) and an average of 26°C (79°F). Both months can reach a maximum of 35°C (96°F), but March tends to be significantly wetter, with 185 mm (7.3 in) of precipitation over 17 days, compared to April’s 73 mm (2.9 in) over 12 days. Humidity levels are relatively similar, at 82% in April and 84% in March, indicating a consistent level of moisture in the air. For a more detailed look at March weather, you can visit Rio das Ostras weather in March.
In comparing the weather between April and May, April tends to be slightly warmer, with average temperatures ranging from a minimum of 16°C (62°F) to a maximum of 35°C (96°F). In contrast, May features a cooler average temperature, with a minimum of 13°C (56°F) and a maximum of 34°C (93°F). Both months experience similar precipitation levels, with April receiving 73 mm (2.9 in) over 12 days and May seeing slightly less at 68 mm (2.7 in) over 9 days. Humidity remains relatively high in both months, with April at 82% and May slightly lower at 80%. For more detailed information, you can check Rio das Ostras weather in May.
April and June in Rio das Ostras present quite a contrast in weather conditions. April experiences warmer temperatures, with minimums of 16°C (62°F) and maximums reaching up to 35°C (96°F), while June is slightly cooler, with a temperature range of 13°C (56°F) to 33°C (91°F). Additionally, April sees heavier rainfall, averaging 73 mm (2.9 in) over about 12 days, compared to June's lighter precipitation of 34 mm (1.3 in) over just 7 days. Humidity levels remain relatively similar, with April at 82% and June slightly lower at 78%. For a more detailed look at June weather, you can visit Rio das Ostras weather in June.
April and July present distinct weather patterns, with April typically being warmer and more humid. In April, temperatures range from a minimum of 16°C (62°F) to a maximum of 35°C (96°F), averaging around 24°C (76°F), while July sees cooler temperatures with a minimum of 12°C (53°F), an average of 21°C (70°F), and a maximum of 33°C (91°F). Precipitation is significantly higher in April, with 73 mm (2.9 in) over 12 days, compared to just 19 mm (0.7 in) over 5 days in July. Additionally, humidity in April remains higher at 82%, while July experiences slightly lower humidity at 77%. For more detailed weather information specifically for July, you can check Rio das Ostras weather in July.
April and August showcase distinct differences in weather patterns. In April, temperatures range from a minimum of 16°C (62°F) to a maximum of 35°C (96°F), with an average temperature of 24°C (76°F). This month experiences a higher level of precipitation at 73 mm (2.9 in) over approximately 12 days, coupled with a humidity level of 82%. In contrast, August presents milder conditions, with temperatures ranging from 13°C (55°F) to 34°C (93°F) and an average of 21°C (70°F). Precipitation is lighter at 53 mm (2.1 in) across about 10 days, and humidity decreases to 75%. For more detailed information, you can visit Rio das Ostras weather in August.
April and September in Rio das Ostras present a similar range of temperatures, with both months experiencing maximums that can reach up to 35°C (96°F). However, April tends to be slightly warmer on average, with temperatures ranging from a minimum of 16°C (62°F) to an average of 24°C (76°F), compared to September, which has a minimum temperature of 15°C (59°F) and an average of 23°C (74°F). In terms of precipitation, April experiences more rainfall, with 73 mm (2.9 in) over approximately 12 days, whereas September sees less rain at 66 mm (2.6 in) across 8 days. Additionally, April has higher humidity at 82%, compared to September's 75%. For more details on September weather in the region, check out Rio das Ostras weather in September.
April and October present similar temperature ranges, with April averaging 24°C (76°F) and October slightly cooler at 24°C (75°F). Both months start with a minimum temperature of around 16°C (61°F-62°F), but October can reach a maximum of 36°C (98°F), just edging out April's maximum of 35°C (96°F). In terms of precipitation, October is wetter, receiving 117 mm (4.6 in) over 15 days, compared to April's 73 mm (2.9 in) over 12 days. Additionally, humidity levels are higher in April at 82%, while October's is more moderate at 74%. For more detailed insights, you can check Rio das Ostras weather in October.
In April, the weather in Rio das Ostras tends to be quite warm, with temperatures ranging from a minimum of 16°C (62°F) to a maximum of 35°C (96°F) and an average of 24°C (76°F). The month sees 73 mm (2.9 in) of precipitation over about 12 days, accompanied by relatively high humidity at 82%.
In contrast, November features a similar average temperature of 24°C (75°F) but experiences slightly cooler minimum temperatures at 15°C (60°F) and a higher maximum of 36°C (98°F). November is significantly wetter, with total precipitation of 235 mm (9.3 in) across 18 days, and the humidity remains comparable at 79%. For more detailed information, check out Rio das Ostras weather in November.
April and December in Rio das Ostras exhibit some notable differences in weather patterns. April typically sees comfortable temperatures ranging from a minimum of 16°C (62°F) to a maximum of 35°C (96°F), with an average of 24°C (76°F). In contrast, December's temperatures are slightly higher, averaging 25°C (78°F) with a peak of 34°C (93°F). While April experiences a moderate level of precipitation of 73 mm (2.9 in) over about 12 days, December is considerably wetter, with total precipitation reaching 233 mm (9.2 in) across 20 days. Despite the increased rainfall in December, humidity levels remain similar, hovering around 81% to 82%. For those interested in a detailed overview of the December weather, check out Rio das Ostras weather in December.
April in Rio das Ostras brings a pleasant shift in weather, offering a delightful balance between warm temperatures and refreshing breezes. While the daytime can still reach a maximum of 35°C, the average cools down to a comfortable 24°C, making it ideal for outdoor activities and enjoying the stunning coastal scenery. With increased humidity typically hovering around 82%, occasional rain showers—spanning about 12 days and totaling 73 mm—help to keep the landscape lush and vibrant. This month stands out from the hotter summer months, as it provides a more temperate climate that invites both locals and visitors to embrace the beauty of this coastal gem. For a deeper understanding of the area's climate, explore Rio das Ostras Climate.