Last updated: August 21, 2025
In December, Angra dos Reis, Brazil experiences a warm tropical climate, with maximum temperatures reaching up to 31°C (88°F) and an average of 23°C (74°F). The weather is characterized by high humidity at 75%, contributing to a lush and vibrant environment. However, this month also brings significant rainfall, with an accumulation of 235 mm (9.3 in) over approximately 24 days, making it one of the wetter months of the year. Visitors can expect a mix of sun and showers, perfect for exploring the region's stunning scenery while indulging in the rich cultural experiences Brazil has to offer.
As December rolls into Angra dos Reis, Brazil, the temperatures begin to reflect the high summer season, offering a delightful blend of warmth and sunshine. With minimums hovering around 16°C (61°F), and averages reaching about 23°C (74°F), visitors can expect pleasantly mild days. The highs, peaking at 31°C (88°F), mirror the previous month, maintaining a consistent warmth that invites beachgoers and adventurers alike. This steady climate marks a continuation of the gradually rising temperatures seen since the cooler months, providing the perfect backdrop for outdoor activities amidst the stunning coastal scenery. As December progresses, the warmth sets the stage for festive celebrations and leisurely days by the water, showcasing the beauty of Brazil’s summer allure.
In December, Angra dos Reis experiences a significant rainfall, with total precipitation reaching 235 mm (9.3 in), showcasing the region's characteristic wet season. This month is marked by 24 rainy days, making it one of the wettest times of the year, just behind February and March in terms of both total rainfall and frequency of rain. The consistent precipitation throughout December contributes to lush landscapes and vibrant ecosystems, as temperatures remain warm, accentuating the tropical feel of this coastal paradise. As the year closes, the upward trend in rainfall from the drier months of May to November becomes evident, setting the stage for the vibrant energy of the summer rains.
As the year winds down, December in Angra dos Reis experiences a slight dip in humidity, settling at around 75%. This marks a continuation of a subtle downward trend from the high humidity levels seen in January and February, which both hover around 85%. As the months progress, the humidity gradually declines, reaching its lowest point in September at 68% before starting to rise again in November. Despite December's decrease, the humidity remains relatively high, reflecting the region's tropical climate. This blend of warmth and moisture creates a vibrant atmosphere, perfect for enjoying the stunning coastal scenery and lush landscapes that define Angra dos Reis.
In December, Angra dos Reis experiences an extreme UV Index of 15, maintaining its trend of high sun exposure seen throughout the year. This month, like the previous ones from January to November, indicates a burn time of just 10 minutes for fair-skinned individuals, underscoring the urgent need for appropriate sun protection. As temperatures soar, the consistent extreme category highlights a pattern of heightened UV levels across the late spring and summer months, making precautions essential for both residents and visitors. For more detailed insights on UV levels, check out the Angra dos Reis UV Index.
UV Risk Categories
December in Angra dos Reis, Brazil, basks in a delightful 285 hours of sunshine, making it one of the sunniest months of the year. As the year comes to a close, this vibrant coastal paradise transitions from the slightly cooler months of September and October, with their 285 and 254 hours of sunshine, to offer a warm embrace of summer radiance. Interestingly, the sunshine hours consistently increase from the shorter days of January with 240 hours to the long, bright December days, mirroring the rising temperatures and festive spirit that draw visitors to this tropical haven. December’s generous sunlight sets the stage for idyllic beach days and unforgettable outdoor adventures, marking an ideal conclusion to the year.
In Angra dos Reis, Brazil, December offers a 36% chance of sunny weather, positioning it as a transitional month as the region shifts from the cooler, cloudier days of November. This uptick in sunshine suggests that while December might still carry some lingering overcast conditions, it is decidedly brighter compared to the preceding months. Notably, this increase in sun likelihood reflects a consistent upward trend, peaking in the subsequent summer months of January and February, which boast chances of 24% and 29% respectively. Consequently, December serves as a promising gateway to the more radiant and warm days ahead, making it an appealing time for those seeking to enjoy the burgeoning summer ambiance along Brazil's stunning coastline.
In Angra dos Reis, Brazil, the daylight duration showcases a distinct seasonal rhythm. Starting with an ample 13 hours of sunlight in January, the days gradually shorten to 10 hours by mid-year, as June through July sees the least illumination. However, as the year progresses, daylight begins to extend once more, giving way to 11 hours in August and September. By October, the sun's presence returns to 12 hours, and December, mirroring January, again boasts 13 hours of glorious daylight. This cyclical pattern not only enhances the region's natural beauty but also invites both locals and travelers to revel in its sun-kissed landscapes throughout the year.
In December, Angra dos Reis experiences a modest wind speed of 2.4 m/s (5 mph), marking a slight decrease from the previous month's 2.6 m/s. This subtle drop reflects a common trend as the year closes, where wind speeds generally hover around the 2.0 to 3.2 m/s range. The summer months see a gradual increase, peaking in October with a delightful 3.2 m/s (7 mph), only to taper into the calmer breezes of December. This seasonal wind pattern not only enhances the region's serene charm but also creates a perfect backdrop for enjoying the lush landscapes and vibrant sailing culture that Angra dos Reis is renowned for.
Weather in Angra dos Reis varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Angra dos Reis, focusing on differences in temperature, rainfall, humidity, and UV levels.
December and January exhibit similar warm weather patterns, but January tends to be slightly warmer and more humid. In December, temperatures range from a minimum of 16°C (61°F) to a maximum of 31°C (88°F), with an average temperature of 23°C (74°F). The month also experiences substantial rainfall, with 235 mm (9.3 in) over 24 days, and humidity levels around 75%. In contrast, January sees higher temperatures, with a minimum of 19°C (67°F), an average of 25°C (77°F), and a peak of 33°C (91°F). While precipitation is just a bit higher at 239 mm (9.4 in), it falls over fewer days (20), leading to increased humidity levels at 85%. For more details, you can check Angra dos Reis weather in January.
In December, the weather features a minimum temperature of 16°C (61°F) and averages around 23°C (74°F), peaking at a maximum of 31°C (88°F). This month experiences significant rainfall, totaling 235 mm (9.3 in) over 24 days, with humidity levels sitting at 75%. In contrast, February brings slightly warmer temperatures, with a minimum of 20°C (68°F), an average of 24°C (76°F), and a maximum of 32°C (91°F). Rainfall is marginally higher at 255 mm (10.0 in) but occurs over fewer days (22), and humidity increases to 85%. For more details on February weather, you can check Angra dos Reis weather in February.
In comparing the weather of December and March, we observe a slight rise in temperatures. December features a minimum temperature of 16°C (61°F) and an average of 23°C (74°F), while March starts with a minimum of 19°C (66°F) and averages 24°C (76°F). Both months share a maximum temperature of 31°C (88°F). However, March experiences slightly higher precipitation, totaling 250 mm (9.8 in) over 22 days, compared to December’s 235 mm (9.3 in) across 24 days. Moreover, humidity levels are higher in March at 86%, compared to December's 75%. For more detailed information about March weather, you can visit Angra dos Reis weather in March.
December and April display notable differences in weather conditions. December typically experiences slightly higher temperatures, with a minimum of 16°C (61°F) and a maximum of 31°C (88°F), whereas April sees a minimum of 17°C (63°F) and a peak of 32°C (89°F). Precipitation is more common in December, totaling 235 mm (9.3 in) over 24 days, compared to April's 125 mm (4.9 in) over 17 days. Additionally, April tends to have higher humidity levels at 83% compared to December's 75%. For more detailed insights, you can check Angra dos Reis weather in April.
In December, Angra dos Reis experiences warmer temperatures with a minimum of 16°C (61°F) and a maximum of 31°C (88°F), making it a hot month with an average of 23°C (74°F). The region sees significant rainfall during this time, with 235 mm (9.3 in) of precipitation over 24 days, contributing to a humidity level of 75%. In contrast, May offers a slightly cooler climate with temperatures ranging from a minimum of 13°C (56°F) to a maximum of 29°C (84°F), averaging 21°C (69°F). Rainfall is notably less in May, totaling 95 mm (3.7 in) across 12 days, and the humidity is slightly higher at 81%. For more details, check out Angra dos Reis weather in May.
December and June offer contrasting weather experiences. In December, temperatures range from a minimum of 16°C (61°F) to a maximum of 31°C (88°F), with an average of 23°C (74°F). This month is also characterized by significant precipitation, totaling 235 mm (9.3 in) over 24 days, and humidity levels around 75%. In contrast, June features milder temperatures, with a minimum of 14°C (57°F) and a maximum of 29°C (84°F), averaging at 20°C (69°F). Rainfall is much lighter, with only 60 mm (2.3 in) over 10 days and a slightly higher humidity of 80%. For a detailed look into June weather, you can check the link: Angra dos Reis weather in June.
In December, the weather is significantly warmer, with temperatures ranging from a minimum of 16°C (61°F) to a maximum of 31°C (88°F) and an average of 23°C (74°F). This month also experiences considerable precipitation, with 235 mm (9.3 inches) spread over 24 days, creating a humid environment with an average humidity of 75%. In contrast, July offers cooler temperatures, with a minimum of 11°C (52°F), an average of 19°C (66°F), and a maximum of 28°C (83°F). Rainfall is notably lower in July, with only 49 mm (1.9 inches) over 7 days and a humidity level of 76%. For more detailed insights, check Angra dos Reis weather in July.
When comparing the weather in December and August, December tends to be warmer and wetter. In December, temperatures range from a minimum of 16°C (61°F) to a maximum of 31°C (88°F), with an average temperature of 23°C (74°F). This month also experiences significant rainfall, with 235 mm (9.3 in) over 24 days and humidity levels around 75%. In contrast, August sees cooler temperatures, with a minimum of 12°C (55°F) and an average of 19°C (67°F), while still reaching a maximum of 31°C (87°F). Precipitation is considerably lower in August, totaling 95 mm (3.7 in) across just 11 days and similar humidity levels of 73%. For more specific insights, you can check out Angra dos Reis weather in August.
When comparing the weather in December and September, December tends to be warmer with average temperatures reaching around 23°C (74°F), while September has a slightly cooler average at 21°C (70°F). Both months experience high humidity, but December is more humid at 75% compared to September's 68%. Additionally, December has significantly more precipitation, with 235 mm (9.3 in) spread over 24 days, whereas September sees only 84 mm (3.3 in) over 10 days, making it a drier month overall. For more details on September weather in this region, you can check out Angra dos Reis weather in September.
Compared to October, December in Angra dos Reis experiences slightly warmer temperatures, with average highs reaching 31°C (88°F) compared to October's maximum of 34°C (94°F). However, October has a more comfortable average temperature of 22°C (71°F) versus December's 23°C (74°F). December sees significantly higher rainfall, with 235 mm (9.3 in) over 24 days, while October has only 153 mm (6.0 in) across 20 days, making October somewhat drier and less humid with 61% humidity compared to December's 75%. For a detailed overview of October's weather, you can check Angra dos Reis weather in October.
In comparing the weather between December and November, both months feature similar temperature ranges, with December showing a slight increase in average temperatures. December has minimum temperatures around 16°C (61°F) and maximums reaching up to 31°C (88°F), while November's minimum is 15°C (60°F) and maximum is 31°C (87°F). However, December experiences significantly higher precipitation, with 235 mm (9.3 in) over 24 days compared to November's 185 mm (7.3 in) over 20 days. Additionally, December's humidity is slightly elevated at 75% compared to November's 72%. For a more detailed look at weather specifics, you can check out Angra dos Reis weather in November.
As December rolls in, Angra dos Reis transforms into a warm tropical paradise, with temperatures soaring higher than in previous months. The blend of high humidity and frequent rain showers brings a vibrant atmosphere, making it a lush time to explore the stunning landscapes. With considerable precipitation throughout the month, visitors can expect a mix of sun and refreshing downpours, which differentiate December from the drier winter months. Embrace the beautiful contrasts of this season and immerse yourself in the tropical allure that Angra dos Reis has to offer. For a deeper dive into the yearly weather patterns, visit Angra dos Reis Climate.