Last updated: August 21, 2025
In Rio das Ostras, Brazil, March brings a blend of warm temperatures and significant rainfall, creating a vibrant tropical atmosphere. With maximum temperatures soaring up to 35°C (96°F) and an average of 26°C (79°F), the days are often filled with sunshine. However, the month also witnesses 185 mm (7.3 in) of precipitation over 17 days, resulting in high humidity levels of 84%. This unique climate combination makes March an exhilarating time to experience the lush landscapes and lively culture of Rio das Ostras, where the warm breeze and occasional showers contribute to the region's captivating charm.
In March, Rio das Ostras offers a delightful transition into the autumn season, with temperatures beginning to cool slightly from the summer peak. The month sees a minimum temperature of 19°C (66°F), while the average settles at a comfortable 26°C (79°F), culminating in a maximum of 35°C (96°F). This marks a subtle dip from the hotter highs of 36°C (97°F) experienced in both January and February. As the days lengthen, the warmth remains inviting, making March an ideal time for beachgoers and nature enthusiasts alike to enjoy the stunning coastal landscapes without the sweltering heat of the previous months. Overall, the weather in March reflects a balance between warmth and comfort, inviting visitors to relish in the beauty of Rio das Ostras.
In March, Rio das Ostras experiences significant rainfall, with total precipitation reaching 185 mm (7.3 in) over approximately 17 days. This amount is slightly less than February's peak of 190 mm, reflecting a continuation of the wet season that begins in the early months of the year. The steady rainfall in March helps sustain the lush, vibrant landscapes typical of this coastal region, although it hints at a gradual tapering off leading into the drier months ahead. The contrast becomes evident in April, where precipitation drops dramatically to 73 mm (2.9 in), marking a transition towards the drier season. Overall, March serves as a crucial month that balances the robust early-year rains before the rainfall begins to dwindle in the months to follow.
In March, Rio das Ostras experiences a comfortable humidity level of 84%, slightly dipping from the preceding months of January and February, which boast higher humidity readings of 85% and 86% respectively. This gradual decrease signals the onset of a drier season, as April follows with a reduced humidity of 82%. Overall, the trend from March through the middle of the year showcases a steady decline in humidity, reaching its lowest at 75% by August and September. This shift creates a refreshing and enjoyable atmosphere for residents and visitors alike, especially as summer transitions into autumn.
In March, the UV Index in Rio das Ostras reaches 13, classified as extreme, with a quick burn time of just 10 minutes. This trend reflects a gradual decline from the peak levels experienced in the preceding months of January and February, where the UV Index reached highs of 16 and 15, respectively. As the season transitions into April, the UV Index further decreases to 11, signaling a slight relief but still maintaining an extreme classification. This data suggests that while March offers a marginal drop in UV intensity, the need for sun protection remains crucial. For more insights on UV levels throughout the year, visit Rio das Ostras UV Index.
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March truly shines in Rio das Ostras, Brazil, with an impressive 322 hours of sunshine, making it one of the sunniest months of the year. This vibrant period follows the slightly lighter days of January and February, which offer 286 and 280 hours, respectively. As the city transitions into April with 302 hours of sunlight, March stands out as a time when beachgoers can fully embrace the sun’s warm embrace. The brightness of March not only signifies the end of summer but also sets the stage for a delightful autumn, where sunshine hours remain abundant, peaking yet again in December with 331 hours. This trend underscores Rio das Ostras as an ideal destination for sunseekers, highlighting the consistent allure of its radiant skies throughout the year.
In Rio das Ostras, Brazil, March brings a notable 48% chance of sunny weather, positioning it favorably as the month transitions away from the cooler, cloudier days of February. As the year progresses, the likelihood of sunshine continues to rise, peaking in the middle of the year with July, which boasts a robust 66% chance of sunny skies. This trend underscores the city's shift towards brighter and warmer months, making March a delightful time for visitors and locals alike to enjoy the beautiful coastal scenery before the sunshine really hits its stride in the subsequent months.
In March, Rio das Ostras enjoys approximately 12 hours of daylight, maintaining the same duration as February. This marks a transition as the region gradually shifts from the longer days of summer, which peak in January at 13 hours, into the shorter daylight hours of autumn. Following March, the daylight gradually decreases to 11 hours in April and May, before settling at 10 hours through the winter months of June and July. However, as the seasons turn, daylight begins to creep back up, returning to 11 hours in August and September, before rising again to 12 hours by October and back to 13 hours in both November and December. This rhythm of daylight not only underscores the seasonal changes but also highlights the balance of time between light and dark throughout the year in this beautiful coastal town.
In March, Rio das Ostras experiences a gentle breeze, with average wind speeds holding steady at 2.4 m/s (5 mph), similar to February's light winds. This consistent airflow provides a calm ambiance, making it an inviting time for both locals and visitors to enjoy outdoor activities without the disruption of stronger gusts. As the month progresses, the winds will begin to pick up slightly, setting the stage for April's 2.9 m/s (6 mph). Overall, March serves as a transitional period in the coastal paradise, where the tranquil winds forecast the lively breezes of the approaching months.
Weather in Rio das Ostras varies notably across the year, with each month offering distinct climate conditions. This page compares March’s weather to other months in Rio das Ostras, focusing on differences in temperature, rainfall, humidity, and UV levels.
In comparing the weather of March and January, we see some interesting differences and similarities. March presents slightly cooler average temperatures, with a minimum of 19°C (66°F) compared to January's 20°C (68°F). While both months experience high maximum temperatures, March's peak reaches 35°C (96°F), just shy of January's 36°C (97°F). Precipitation is notably higher in March, with 185 mm (7.3 in) over 17 days, contrasting with January's 127 mm (5.0 in) over 12 days. Humidity levels remain fairly comparable, with March at 84% and January at 85%. For a closer look at January's weather, you can visit Rio das Ostras weather in January.
When comparing the weather in March and February, we find that March experiences slightly lower minimum and maximum temperatures, with March’s minimum at 19°C (66°F) and maximum at 35°C (96°F), compared to February's minimum of 20°C (68°F) and maximum of 36°C (97°F). Both months have the same average temperature of 26°C (79°F). In terms of precipitation, March sees a total of 185 mm (7.3 in) over 17 days, while February has slightly higher rainfall at 190 mm (7.5 in) over 20 days. Humidity levels are also comparable, with March at 84% and February at 86%. For more detailed information, you can visit Rio das Ostras weather in February.
In comparing the weather between March and April, March tends to be warmer and wetter. The minimum temperature in March is slightly higher at 19°C (66°F) compared to April's minimum of 16°C (62°F), while the average temperature is also higher in March at 26°C (79°F) versus April's 24°C (76°F). Both months experience the same maximum temperature of 35°C (96°F). However, March sees significantly more rainfall, with 185 mm (7.3 in) falling over 17 days, while April has just 73 mm (2.9 in) over 12 days. Humidity levels are comparable, with March at 84% and April at 82%. For more detailed insights, you can check out Rio das Ostras weather in April.
In March, the weather is warmer with temperatures ranging from a minimum of 19°C (66°F) to a maximum of 35°C (96°F), averaging around 26°C (79°F). This month also sees significant rainfall, with 185 mm (7.3 in) of precipitation spread over 17 days and high humidity levels at 84%. In contrast, May features cooler conditions, with a temperature range of 13°C (56°F) to 34°C (93°F), averaging 22°C (73°F). Precipitation decreases dramatically to 68 mm (2.7 in) over just 9 days, while humidity remains slightly lower at 80%. For more details on May’s weather, visit Rio das Ostras weather in May.
In March, the weather tends to be warmer and more humid, with temperatures ranging from a minimum of 19°C (66°F) to a maximum of 35°C (96°F), and an average of 26°C (79°F). This month also experiences significant rainfall, totaling 185 mm (7.3 in) over 17 days, contributing to a high humidity level of 84%. In contrast, June offers milder conditions, with temperatures ranging from a minimum of 13°C (56°F) to a maximum of 33°C (91°F) and an average of 22°C (72°F). Precipitation drops considerably to 34 mm (1.3 in) over just 7 days, and humidity decreases slightly to 78%. For more specifics on June's climate, check out Rio das Ostras weather in June.
March and July in Rio das Ostras present contrasting weather patterns. March is generally warmer, with minimum temperatures around 19°C (66°F) and an average of 26°C (79°F), peaking at 35°C (96°F). This month also sees significant rainfall, with 185 mm (7.3 in) of precipitation spread over 17 days, contributing to a high humidity level of 84%. In contrast, July experiences cooler temperatures, with minimums at 12°C (53°F) and an average of 21°C (70°F), not exceeding 33°C (91°F). Rainfall is minimal in July, amounting to just 19 mm (0.7 in) over 5 days, alongside a slightly lower humidity of 77%. For more specifics on July weather, check out Rio das Ostras weather in July.
March and August present distinct differences in weather conditions. In March, temperatures range from a minimum of 19°C (66°F) to a maximum of 35°C (96°F), with an average of 26°C (79°F), while August's temperatures are cooler, with a minimum of 13°C (55°F) and a maximum of 34°C (93°F), averaging 21°C (70°F). Additionally, March experiences significantly more precipitation, with 185 mm (7.3 in) falling over 17 days, compared to August's lighter rainfall of 53 mm (2.1 in) over just 10 days. Humidity levels are also higher in March at 84%, compared to 75% in August. For more details, you can explore Rio das Ostras weather in August.
March and September in Rio das Ostras present contrasting weather patterns. March experiences warmer temperatures with a minimum of 19°C (66°F) and an average of 26°C (79°F), reaching a high of 35°C (96°F). This month also witnesses significant rainfall, averaging 185 mm (7.3 in) over 17 days, with high humidity levels at 84%. In contrast, September features cooler temperatures, with a minimum of 15°C (59°F) and an average of 23°C (74°F), while still peaking at 35°C (96°F). Rainfall drops significantly to 66 mm (2.6 in) over just 8 days, and humidity decreases to 75%. For more detailed information, check out Rio das Ostras weather in September.
March and October exhibit distinct weather patterns, reflecting the transition between seasons. In March, temperatures range from a minimum of 19°C (66°F) to a high of 35°C (96°F), with an average of 26°C (79°F). The month experiences significant rainfall, totaling 185 mm (7.3 in) over 17 days, accompanied by high humidity at 84%. In contrast, October offers slightly cooler temperatures, with a minimum of 16°C (61°F), an average of 24°C (75°F), and a peak of 36°C (98°F). Rainfall decreases to 117 mm (4.6 in) over just 15 days, bringing lower humidity levels at 74%. For further details on October weather, you can check Rio das Ostras weather in October.
March and November in Rio das Ostras showcase distinct weather characteristics. In March, temperatures range from a minimum of 19°C (66°F) to a maximum of 35°C (96°F), with an average of 26°C (79°F). This month also experiences considerable precipitation, totaling 185 mm (7.3 in) over approximately 17 days, accompanied by high humidity levels at 84%. In contrast, November presents slightly cooler temperatures, with a minimum of 15°C (60°F) and a maximum of 36°C (98°F), averaging 24°C (75°F). However, this month sees an increase in precipitation, reaching 235 mm (9.3 in) over 18 days, while humidity remains lower at 79%. For more detailed information, you can check Rio das Ostras weather in November.
In comparing the weather of March and December in Rio das Ostras, we observe some notable differences. March tends to feature slightly higher temperatures, with a minimum of 19°C (66°F) and an average of 26°C (79°F), peaking at 35°C (96°F). Conversely, December has a lower temperature range, with a minimum of 16°C (61°F) and an average of 25°C (78°F), reaching a maximum of 34°C (93°F).
Precipitation levels are higher in December, with 233 mm (9.2 in) over 20 days, compared to March’s 185 mm (7.3 in) spread over 17 days. Humidity also remains relatively high in both months, with March at 84% and December slightly lower at 81%. For more detailed weather insights during December, you can check Rio das Ostras weather in December.
As March unfolds in Rio das Ostras, visitors can expect a unique blend of warmth and humidity that sets it apart from the cooler months of the year. With temperatures reaching up to 35°C and an average hovering around 26°C, the days are undeniably hot; however, the higher humidity levels at 84% can make the warmth feel even more intense. Unlike the drier spells of the previous months, March brings an increase in rainfall, totaling around 185 mm over about 17 days, contributing to the lush landscape the region is known for. This combination of warmth and increased precipitation provides a vibrant backdrop, making it an ideal time for those who relish the tropical climate. For more insights into what to expect throughout the year, check out the detailed Rio das Ostras Climate.