Last updated: August 21, 2025
December in Santos Dumont, Brazil, offers a warm tropical climate characterized by a maximum temperature reaching up to 33°C (92°F) and an average of 22°C (72°F), providing an inviting atmosphere for outdoor activities. The month experiences frequent rainfall, with 303 mm (11.9 in) of precipitation spread across 24 days, creating a lush environment. Humidity hovers around a comfortable 68%, contributing to the vibrant landscape while ensuring that the air remains refreshingly warm. This festive season is perfect for enjoying both the beauty of nature and the cultural charm of the region.
In December, Santos Dumont experiences a delightful transition into summer, with temperatures reflecting a warming trend typical for the season. The month sees a minimum of 13°C (57°F), rising to an average of 22°C (72°F), and peaking at a robust 33°C (92°F). This pattern highlights a steady increase from the cooler months, inviting both locals and tourists alike to enjoy the warmth. As the year closes, the climate becomes not only warmer but also invigorating, making it an ideal time for outdoor activities and festivities. Visitors can expect sunny days perfect for exploring the natural beauty that surrounds this vibrant Brazilian locale.
December in Santos Dumont, Brazil, marks the peak of the rainy season, showcasing a striking contrast to the drier months of the year. With an impressive total precipitation of 303 mm (11.9 in) spread over 24 days, December stands out not only for its volume of rainfall but also for its consistency, with nearly all days witnessing some level of precipitation. This surge in rain follows November's substantial 241 mm (9.5 in), indicating a trend of increasing precipitation as the year comes to a close. In fact, December's rainfall is nearly double that of the drier months, such as June and July, which typically see only 15 mm (0.6 in) and 22 mm (0.9 in), respectively. As the year wraps up, these wet conditions create a lush, vibrant environment, reinforcing the essential role of December in the local climate cycle.
In Santos Dumont, Brazil, December marks a transition in humidity levels, with an average of 68%. This reflects a shift from the higher humidity of the earlier months, where January and February see peaks of 83% and 85% respectively. As the year progresses, humidity gradually decreases, hitting its lowest point in October at just 48%. Following this dip, November’s levels rise slightly to 61%, leading into December's more moderate conditions. Overall, December's humidity indicates a gradual return to a more humid environment, setting the stage for the wet season ahead.
In December, Santos Dumont, Brazil, experiences a UV Index of 16, categorizing it as extreme and maintaining a consistent burn time of just 10 minutes. This pattern of high UV exposure is evident throughout the summer months, with similar extreme levels recorded from January to March and again in September to November. Notably, while the UV Index decreases slightly during the cooler winter months of June and July, it doesn't dip below the high category, suggesting that Sun safety is essential year-round. As you plan your outdoor activities, be mindful of these trends and always protect your skin. For detailed information on UV Index levels, check out Santos Dumont UV Index.
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In Santos Dumont, Brazil, December brings a delightful 264 hours of sunshine, adding warmth and vibrancy to the holiday season. This month stands out as the city transitions into summer, showcasing a significant increase compared to the 237 hours seen in November. Overall, the trend throughout the year reveals fluctuating hours of sunshine, with March capturing the spotlight at 304 hours, while October records the lowest at 250 hours. Despite some variations, December's sunshine continues a strong finish to the year, making it a perfect time for outdoor festivities and enjoying the region's natural beauty.
In December, Santos Dumont, Brazil, experiences a modest 20% chance of sunny weather, marking a slight decline as the year comes to a close. This figure follows an upward trend through the months leading to summer, peaking in the winter months of July and August, where sunny days reach 74% and 53%, respectively. Compared to November's 19%, December shows a slight improvement, yet it remains one of the less favorable months for consistent sunshine. As the holiday season approaches, visitors may want to prepare for a mix of clouds and sun, embracing the charming unpredictability of Brazil's summer climate.
In Santos Dumont, Brazil, the daylight duration shifts subtly throughout the year, revealing an interesting seasonal pattern. Starting strong in January and December with 13 hours of daylight, the sun gradually recedes through the year, peaking in the summer months before tapering off to 10 hours in the mid-winter of June and July. As the year progresses, the daylight stretches back to 12 hours in October and then returns to 13 hours in November, signaling the warmest days of the year. This cyclical rhythm showcases the beautiful balance of light that characterizes life in this vibrant locale, making each season uniquely special.
As December rolls into Santos Dumont, the average wind speed settles at 2.3 m/s (5 mph), maintaining a gentle breeze reminiscent of earlier months. This transitional period shows a slight uptick from the lows of February and March, both at 1.8 m/s (4 mph), and mirrors the breezy ambiance of April and May, where speeds lingered around 2.0 m/s to 1.9 m/s. Notably, the wind picks up in August and September, reaching peaks of 2.4 m/s (5 mph) and 2.5 m/s (6 mph), suggesting a gradual intensification leading into the year’s close. By December, as the year winds down, Santos Dumont enjoys a refreshing yet mild airflow, perfectly setting the stage for the festivities of summer.
Weather in Santos Dumont varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Santos Dumont, focusing on differences in temperature, rainfall, humidity, and UV levels.
In comparing the weather between December and January, December experiences slightly milder temperatures, with an average of 22°C (72°F), while January sees an increase with an average of 23°C (74°F). December is characterized by higher precipitation, totaling 303 mm (11.9 in) over 24 days, compared to January's 164 mm (6.5 in) spread over just 15 days. Additionally, January presents higher humidity levels at 83%, compared to 68% in December. For more detailed insights, check Santos Dumont weather in January.
December and February both offer warm temperatures, but with some differences in conditions. In December, the minimum temperature is slightly lower at 13°C (57°F), while February sees a higher minimum of 16°C (60°F). The average temperatures remain relatively stable around 22°C (72°F) for both months. However, February tends to be slightly warmer on the upper end, reaching a maximum of 34°C (93°F) compared to December's 33°C (92°F). Precipitation is more prevalent in December, with 303 mm (11.9 in) over 24 days, while February has 274 mm (10.8 in) across 19 days, suggesting a somewhat drier month. Additionally, humidity levels rise significantly in February to 85%, contrasting with December's 68%. For more information, check out Santos Dumont weather in February.
In comparing the weather of December and March, we see some notable similarities and differences. December typically has a minimum temperature of 13°C (57°F) and an average of 22°C (72°F), reaching up to a maximum of 33°C (92°F). It also experiences higher precipitation, with 303 mm (11.9 in) over 24 days and a humidity level of 68%. In contrast, March features slightly warmer conditions, with a minimum of 14°C (57°F) and an average of 23°C (73°F), peaking at 32°C (90°F). Precipitation is lower in March at 216 mm (8.5 in) over 17 days, but the humidity rises to 87%. For a more detailed look at March weather, you can explore Santos Dumont weather in March.
When comparing the weather in December and April, several notable differences emerge. December tends to be warmer overall, with average temperatures ranging from a minimum of 13°C (57°F) to a maximum of 33°C (92°F), while April exhibits slightly cooler conditions with temperatures from 12°C (53°F) to a maximum of 31°C (88°F). Additionally, December experiences significantly higher precipitation, totaling 303 mm (11.9 in) over 24 days, compared to April's 77 mm (3.0 in) across just 12 days. The humidity levels in April are also higher at 86%, compared to December's 68%. For more detailed insights, you can check Santos Dumont weather in April.
December and May present contrasting weather conditions, highlighting the transition between the end of the year and the onset of winter. In December, temperatures are warmer, ranging from a minimum of 13°C (57°F) to a maximum of 33°C (92°F), with an average of 22°C (72°F). This month also experiences significant rainfall, with 303 mm (11.9 inches) over approximately 24 days, contributing to a humidity level of 68%. In contrast, May features cooler temperatures, with a minimum of 7°C (45°F) and a maximum of 29°C (84°F), averaging at 18°C (66°F). The precipitation drops dramatically to 50 mm (2.0 inches) spread over just 7 days, accompanied by a higher humidity of 82%. For more detailed weather insights, you can check Santos Dumont weather in May.
December and June present distinct weather patterns. In December, temperatures show a wider range, with minimums around 13°C (57°F) and maximums reaching up to 33°C (92°F), creating a warm and often humid climate with an average humidity of 68%. This month also experiences significant rainfall, with 303 mm (11.9 in) spread over 24 days, making it one of the wetter months of the year. In contrast, June is cooler, with temperatures ranging from a minimum of 9°C (49°F) to a maximum of 29°C (85°F) and an average of 18°C (65°F). Precipitation is minimal during this month, only 22 mm (0.9 in) across just 5 days, and humidity peaks at 82%, contributing to a damp feel but without the heavy rains typical of December. For more specific insights on the climate, you can visit Santos Dumont weather in June.
When comparing the weather in December and July, it's evident that December is significantly warmer and wetter. In December, temperatures range from a minimum of 13°C (57°F) to a maximum of 33°C (92°F), with an average temperature of 22°C (72°F). This month also sees substantial rainfall, accumulating 303 mm (11.9 in) over 24 days, resulting in a humidity level of 68%. In contrast, July experiences cooler weather, with temperatures ranging from a minimum of 7°C (44°F) to a maximum of 28°C (82°F) and an average of 17°C (62°F). Precipitation is markedly lower, with only 15 mm (0.6 in) over just 3 days, and higher humidity at 77%. For more detailed information about July's climate, you can visit Santos Dumont weather in July.
The weather in December offers a warmer climate compared to August, with temperatures ranging from a minimum of 13°C (57°F) to a maximum of 33°C (92°F) and an average of 22°C (72°F). In contrast, August sees cooler temperatures, with a minimum of 6°C (43°F) and a maximum of 30°C (86°F), yielding an average of 17°C (63°F). Notably, December experiences significantly higher precipitation at 303 mm (11.9 in) over 24 days, while August is much drier, with only 42 mm (1.7 in) of rainfall over 6 days. Humidity levels are similar, with December at 68% and August slightly higher at 72%. For more detailed information on the weather during this month, check out Santos Dumont weather in August.
In comparing the weather between December and September, we notice some significant differences. December experiences warmer temperatures overall, with minimums around 13°C (57°F) compared to September's 10°C (51°F), and averages of 22°C (72°F) in December versus 20°C (69°F) in September. Both months can reach a maximum of 33°C (92°F), but December is also characterized by much higher precipitation, averaging 303 mm (11.9 in) over 24 days compared to just 52 mm (2.1 in) over 9 days in September. Additionally, December has a higher humidity level of 68%, compared to 63% in September. For more detailed weather patterns, you can check Santos Dumont weather in September.
When comparing the weather in December and October, December tends to be slightly warmer overall, with temperatures ranging from a minimum of 13°C (57°F) to a maximum of 33°C (92°F), while October's temperatures range from a minimum of 12°C (54°F) to a maximum of 34°C (94°F). However, December experiences significantly more precipitation, totaling 303 mm (11.9 in) over 24 days, compared to October’s 166 mm (6.5 in) across 19 days. Additionally, December is more humid, with a humidity level of 68%, in contrast to October's lower humidity of 48%. For more detailed information on October weather, you can visit Santos Dumont weather in October.
In December, the weather in Santos Dumont exhibits slightly warmer temperatures compared to November, with minimum temperatures of 13°C (57°F) compared to November's 11°C (53°F). The average temperature rises to 22°C (72°F) in December, while the maximum temperatures reach 33°C (92°F), slightly higher than November's maximum of 32°C (90°F). Additionally, December experiences increased precipitation, with 303 mm (11.9 in) falling over 24 days, compared to November's 241 mm (9.5 in) over 20 days. Humidity also increases in December, reaching 68% compared to 61% in November. For more detailed insights on November's weather, visit Santos Dumont weather in November.
In December, Santos Dumont experiences a unique blend of warm temperatures and high humidity, making it quite different from the cooler months that precede it. With maximums soaring to 33°C and an average temperature of 22°C, the warmth is undeniable, while the frequent rainfall, totaling 303 mm over 24 days, adds to the lushness of the landscape. This month marks a transition into the wet season, creating a vibrant atmosphere but also a challenge for outdoor activities. For those looking to understand the full context of Santos Dumont's climate, including December's distinctive characteristics, you can explore more at Santos Dumont Climate.