Last updated: August 21, 2025
December in Atibaia, Brazil is characterized by warm temperatures and significant rainfall, offering a tropical sensation for residents and visitors alike. The maximum temperature can reach a sweltering 33°C (91°F), while the average hovers around a comfortable 22°C (72°F), and the nights cool down to a refreshing 12°C (54°F). This month experiences an average precipitation of 153 mm (6.0 in) spread over 20 days, contributing to an elevated humidity level of 80%. For those exploring Atibaia during this time, the lush landscapes and vibrant atmosphere promise a memorable experience, despite the frequent showers.
In Atibaia, Brazil, December boasts a pleasant temperature range, making it an enticing time to visit. With minimums around 12°C (54°F) and maximums reaching 33°C (91°F), the average temperature sits comfortably at 22°C (72°F). This month serves as a bridge to the hotter summer days that follow, reflecting a pattern of increasing warmth as the year draws to a close. Notably, December continues the trend of mild evenings, allowing for enjoyable outdoor activities under the vibrant Brazilian sky. As temperatures rise towards the year's end, visitors can revel in a warm yet inviting atmosphere, perfect for exploring the scenic beauty of Atibaia.
December in Atibaia, Brazil, marks a significant uptick in precipitation compared to the drier months preceding it. With 153 mm (6.0 in) of rainfall over 20 days, this month is characterized by frequent, albeit moderate, showers that breathe life into the lush landscapes. December's rainfall is a crucial part of the rainy season, which peaks following November's 136 mm (5.4 in), illustrating a trend of increasing precipitation as summer approaches. The pattern of more than half the month experiencing rain not only underscores December's vital role in replenishing water resources but also sets the stage for vibrant flora as the year winds down.
As the year rounds off, December in Atibaia, Brazil, presents a noticeable shift in humidity levels. While the month begins with a slightly elevated humidity of 80%, it reflects a gradual decline from the peak levels observed earlier in the year, where January and February hold steady at 88%. The trend shows a steady decrease through the warmer months, reaching a low of 50% in October before slightly rising again in November. This pattern indicates that Atibaia enjoys a variety of humidity experiences, with the onset of summer bringing a welcome, albeit moist, air. Overall, December's humidity level suggests a transitional phase, balancing the drier air of earlier fall with the more humid conditions typical of the approaching summer.
In Atibaia, Brazil, the UV Index reaches its peak intensity during December, soaring to 16—an extreme level that necessitates vigilance, as burn time is a mere 10 minutes. This trend of heightened UV exposure is consistent throughout the summer months, from January to March, where values remain at 16 and 13, respectively. Even as autumn approaches, the UV Index does not drop significantly; in November, it still registers an alarming 15. Interestingly, while the UV Index sees a slight decline in the cooler months—May through July—values remain notably high, never dipping below 7. With such relentless UV exposure, residents and visitors alike are urged to stay informed and protected. For additional details on UV levels throughout the year, check out Atibaia UV Index.
UV Risk Categories
December marks a delightful culmination of sunshine in Atibaia, Brazil, with 302 hours of sunlight gracing the month. As the year progresses, a noticeable upward trend emerges, especially from the latter half, where sunshine hours peak significantly. From January's 232 hours, the days grow brighter through the seasons, with the peak reaching 309 hours in March and then maintaining a strong presence into December. This steady increase not only enhances the charm of Atibaia's vibrant landscapes but also invites locals and visitors alike to bask in the warmth of the Brazilian summer, making it an ideal time to explore its natural beauty and outdoor festivities.
The likelihood of sunny weather in Atibaia, Brazil, experiences notable fluctuations throughout the year. While December has a 35% chance of sunshine, it reflects a transitional period as the town shifts from the drier months of late spring to the more humid summer season. This percentage mirrors a decrease from the earlier months, yet still offers hopeful glimpses of sunlight similar to November's figures. As the year progresses, the odds of clear skies increase significantly, peaking at an impressive 65% in July. Thus, while December may not be the sunniest month, it provides a pleasant balance, hinting at the vibrant warmth to come in the summer ahead.
In Atibaia, Brazil, the daylight duration reveals a rhythmic dance throughout the year. January and December stand out with 13 hours of daylight, providing ample time for both leisure and exploration. As the year progresses toward the mid-year months of May to July, daylight dips to a consistent 10 hours, reflecting the winter season's embrace. This transition is accentuated by the gradual increase in daylight during the spring and fall, where April and August enjoy 11 hours of sunshine. Moving through October and November, the daylight extends once again to 12 and 13 hours, respectively, hinting at the return of longer days. Overall, Atibaia's sunlight pattern not only caters to those who bask in the sun but also suggests a comforting predictability in the rhythm of each month.
As December sweeps into Atibaia, Brazil, the landscape feels a refreshing shift in the air, with an average wind speed of 2.8 m/s (6 mph). This marks a slight decrease from the peak winds of 3.2 m/s (7 mph) experienced in the preceding months of October and November. Interestingly, the winds have been gradually increasing since the milder days of March, which recorded just 1.9 m/s (4 mph). August and September also witnessed a notable uptick, hinting at a seasonal transition towards the end of the year. As the festive spirit of December unfolds, the gentle breezes carry with them a whisper of warmth, making it an inviting time for outdoor activities amid the charming scenery of Atibaia.
Weather in Atibaia varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Atibaia, focusing on differences in temperature, rainfall, humidity, and UV levels.
In December, the weather features a range of temperatures where the minimum is 12°C (54°F) and the average reaches 22°C (72°F), with a maximum of 33°C (91°F). The month experiences significant rainfall, totaling 153 mm (6.0 in) over approximately 20 days, with humidity levels around 80%.
In comparison, January sees slightly warmer conditions, with a minimum temperature of 13°C (55°F) and an average of 23°C (73°F), while still peaking at 33°C (91°F). Rainfall increases to 184 mm (7.2 in), falling over 18 days, and humidity rises to 88%.
For more details about the January weather in Atibaia, check out Atibaia weather in January.
When comparing the weather in December and February, both months showcase warm temperatures, but February tends to be slightly warmer. December features minimum temperatures around 12°C (54°F) and maximums of 33°C (91°F), while February sees a higher minimum of 15°C (59°F) and a peak max of 34°C (93°F). Precipitation is also notably higher in February, with 170 mm (6.7 in) over 15 days compared to December's 153 mm (6.0 in) over 20 days. Additionally, February experiences higher humidity at 88%, compared to December's 80%. For a closer look at February's weather specifics, check out Atibaia weather in February.
In December, the weather features warm temperatures, with a minimum of 12°C (54°F), and reaching up to a maximum of 33°C (91°F), resulting in an average temperature of 22°C (72°F). The month is characterized by significant precipitation, totaling 153 mm (6.0 in) over approximately 20 days, along with higher humidity levels at 80%. In comparison, March exhibits similar temperature patterns, with a minimum of 13°C (55°F), a slightly lower maximum of 32°C (89°F), and an equivalent average temperature of 22°C (72°F). However, March sees a reduction in precipitation, totaling 128 mm (5.1 in) over about 15 days, and a slight increase in humidity at 87%. For more detailed information on March weather, visit Atibaia weather in March.
December and April both offer relatively warm temperatures, but December tends to be hotter and wetter. In December, temperatures range from a minimum of 12°C (54°F) to a maximum of 33°C (91°F), while April sees slightly cooler conditions with a minimum of 10°C (51°F) and a maximum of 30°C (86°F). Additionally, December experiences significantly more rainfall, with 153 mm (6.0 in) spread over 20 days, compared to April’s more moderate 52 mm (2.0 in) over just 8 days. Humidity levels are comparable, with December at 80% and April just slightly higher at 84%. For a closer look at the weather conditions in April, you can check out Atibaia weather in April.
December and May present distinctly different weather patterns. In December, temperatures soar with a minimum of 12°C (54°F), an average of 22°C (72°F), and a maximum reaching 33°C (91°F). The month is also characterized by significant rainfall, totaling 153 mm (6.0 in), spread over approximately 20 days, and a high humidity level of around 80%. In contrast, May experiences milder temperatures, with a cooler minimum of 4°C (40°F) and an average temperature of 18°C (64°F), peaking at 29°C (84°F). Precipitation is markedly lower in May, amounting to just 44 mm (1.7 in) over about 5 days, and humidity remains slightly lower at 79%. For a detailed look at the weather during this month, refer to Atibaia weather in May.
In December, the weather tends to be significantly warmer and more humid compared to June. With temperatures ranging from a mild 12°C (54°F) at night to a peak of 33°C (91°F) during the day, it often feels quite hot. Additionally, December experiences substantial rainfall, averaging 153 mm (6.0 in) over 20 days, contributing to a high humidity level of 80%. In contrast, June is much cooler, with temperatures fluctuating between 6°C (43°F) and 27°C (82°F), and only 31 mm (1.2 in) of precipitation expected over 5 days. The humidity in June is slightly lower at 77%, making for a more comfortable feel overall. For more detailed insights into June weather, you can refer to Atibaia weather in June.
In December, temperatures in Atibaia are significantly warmer, with minimums around 12°C (54°F) and daytime highs reaching up to 33°C (91°F), making it much hotter than July's milder temperatures, where the average maximum is only 28°C (83°F). Additionally, December experiences much more rainfall, with an average precipitation of 153 mm (6.0 in) over 20 days, contrasting sharply with July's dry conditions that see only 14 mm (0.6 in) of rain over just one day. The humidity is also higher in December at 80%, compared to July’s 72%, contributing to a more humid and tropical feel during the summer month. For a detailed overview of July weather conditions, you can check Atibaia weather in July.
December generally offers warmer and more humid conditions compared to August. In December, temperatures fluctuate from a minimum of 12°C (54°F) to a maximum of 33°C (91°F), resulting in an average of 22°C (72°F). This month also sees significant rainfall, with about 153 mm (6.0 in) of precipitation over approximately 20 days, contributing to a high humidity level of 80%. In contrast, August presents a cooler climate with temperatures ranging from a minimum of 5°C (40°F) to a maximum of 30°C (87°F), averaging at 17°C (63°F). Precipitation is much lighter in August, totaling only 50 mm (2.0 in) over 5 days, and the humidity is lower at 65%. For more details on the specific conditions in August, you can visit Atibaia weather in August.
In comparing the weather between December and September, we see some notable differences. December features warmer temperatures with a minimum of 12°C (54°F) and an average of 22°C (72°F), peaking at 33°C (91°F). In contrast, September has slightly cooler temperatures, with a minimum of 9°C (48°F) and an average of 21°C (69°F), reaching a maximum of 34°C (93°F). Precipitation is another significant factor; December sees much more rainfall at 153 mm (6.0 in) over 20 days, compared to September, which only experiences 44 mm (1.7 in) over 6 days. Additionally, the humidity in December is notably higher at 80%, while September maintains a more moderate 58%. For more detailed insights into September weather, visit Atibaia weather in September.
When comparing the weather in December and October, December tends to be slightly warmer overall, with average temperatures ranging from a minimum of 12°C (54°F) to a maximum of 33°C (91°F). In contrast, October has a marginally cooler average with temperatures ranging from 11°C (52°F) to a high of 35°C (96°F). Rainfall is more frequent in December, with a total of 153 mm (6.0 in) over 20 days, compared to October, which sees 124 mm (4.9 in) of rain over just 14 days. Additionally, December's humidity level is notably higher at 80%, while October's humidity sits at a more comfortable 50%. For detailed insights about October weather, you can check Atibaia weather in October.
In comparing the weather of December and November, December tends to be slightly warmer overall, with average temperatures ranging from 12°C (54°F) to 33°C (91°F), while November's range is from 10°C (51°F) to 35°C (95°F). December experiences more rainfall, totaling 153 mm (6.0 in) across 20 days, compared to November's 136 mm (5.4 in) over 13 days. Additionally, December has a higher humidity level at 80%, compared to November's 75%. For a more detailed look at November's weather, check out Atibaia weather in November.
As December unfolds in Atibaia, visitors experience a transition into the summer months marked by warmer temperatures and increased humidity, creating a vivid contrast to the cooler and drier days of the preceding months. With average highs reaching a balmy 33°C, outdoor activities become more inviting despite the frequent rainfall, which may affect travel plans. This month often sees overcast skies, yet the verdant landscapes rejuvenated by the 153 mm of precipitation provide a stunning backdrop for exploring the region. Those looking to learn more about the full range of climate experiences offered by Atibaia can explore additional details here: Atibaia Climate.