Last updated: August 21, 2025
December in Itatiaia, Brazil, is characterized by warm temperatures and significant rainfall. With a maximum of 32°C (89°F) and an average of 22°C (71°F), the climate is pleasantly warm, ideal for outdoor activities. However, be prepared for the wet conditions, as the region experiences 414 mm (16.3 in) of precipitation over 26 days, contributing to a humidity level of around 75%. This combination of warmth and moisture creates a vibrant, lush landscape, perfect for nature enthusiasts eager to explore Itatiaia's stunning scenery.
In December, Itatiaia, Brazil, experiences a delightful transition into the summer months, with temperatures that create a warm and inviting atmosphere. The minimum temperature hovers around 12°C (53°F), while the average settles at a comfortable 22°C (71°F), making it perfect for outdoor activities. As the days warm up, the temperature can peak at 32°C (89°F), aligning with the trend of increasing warmth seen throughout late spring and early summer. This gradual rise from the cooler months signals a vibrant and lively environment, encouraging both locals and visitors to enjoy the scenic beauty and rich culture of this stunning region.
December in Itatiaia, Brazil, stands out as a remarkable month for precipitation, featuring an impressive 414 mm (16.3 in) of rainfall spread over 26 days. This substantial accumulation marks it as the wettest month of the year, following closely after November, which also experienced heavy rain with 289 mm (11.4 in). The increase in precipitation during December signals the height of the rainy season, setting a striking contrast with the drier months of May and June, where only 74 mm (2.9 in) and 40 mm (1.6 in) fell, respectively. As the year comes to a close, the persistent rainfall serves not only as a vital water source but also breathes life into the lush landscapes of Itatiaia, creating a vibrant, verdant backdrop for the festive season.
In December, Itatiaia experiences a notable shift in humidity, with levels averaging around 75%. This marks a decrease from the particularly humid months of January through March, where humidity routinely hovers above 85%. The trend reveals a gradual decline from the peak humidity of 86% in March down to 68% by September, illustrating the region's transition through the seasons. With December sitting comfortably above the mid-range of the yearly averages, it provides a refreshing relief from the earlier moist months while still maintaining a lush atmosphere that characterizes the beautiful landscape of Itatiaia.
In December, Itatiaia, Brazil, experiences an extreme UV Index of 16, identical to the peak values seen in January and February. This consistency indicates a continuous need for heightened sun protection, as the recommended burn time remains a striking 10 minutes. The trend throughout the year shows a gradual decline in UV Index from 16 in summer months to 7 in mid-winter before ramping back up. With such notable fluctuations, residents and visitors alike should stay informed and prepared for sun exposure. For more detailed information, check out the Itatiaia UV Index.
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In December, Itatiaia, Brazil, basks in a delightful 284 hours of sunshine, characteristic of a region that enjoys a generous amount of daylight throughout the year. Notably, December follows a pattern seen in preceding months, where autumnal and winter months like June and November offered slightly less sun, but still hovered around the middle range of light exposure. As the year draws to a close, the sun beckons warmly, making it the perfect time for outdoor activities and exploration. The trend showcases that as the year progresses towards summer, the sunshine hours peak, with March and July claiming the top spots. This consistent flow of sunshine not only enhances the beauty of Itatiaia but also invites visitors to revel in its natural splendor.
In December, Itatiaia, Brazil, experiences a 26% likelihood of sunny weather, marking a modest increase from the cooler months of October and November, where sun chances lingered at 12% and 24%, respectively. This uptick aligns with a broader seasonal trend, as the region begins to transition into summer. Notably, December's sunshine prediction is relatively low compared to the peak sunny months of July, which boasts a 63% chance, but it does indicate a shift towards brighter days ahead. As such, while December may not be the sunniest month, it offers a promising glimpse into the warmer season, inviting both locals and visitors to indulge in the burgeoning summer spirit.
In Itatiaia, Brazil, the daylight duration reveals a fascinating seasonal rhythm. As the year begins, January and December delight in 13 hours of sunlight, offering long, bright days that are perfect for outdoor adventures. February and March see a slight dip to 12 hours, while April and May settle at 11 hours, marking the gradual descent into winter. The shortest days occur in June and July, where daylight reduces to 10 hours, creating a cozy ambiance for introspection and relaxation. However, as August rolls in, sunlight returns to 11 hours, gradually building back up through the spring months of September and October, before reaching a peak once again in November. This ebb and flow of daylight not only enhances the beauty of the landscape but also nurtures the vibrant life within this stunning region.
In December, the winds in Itatiaia, Brazil, take on a gentle character, averaging 1.4 m/s (3 mph). This reflects a slight dip from the breezier months of September and October, where wind speeds reached 1.6 m/s (4 mph) and 1.7 m/s (4 mph) respectively. The trend throughout the year shows a gradual increase in wind speed from the beginning of spring through early summer, peaking in the fall, and then settling into milder winds as the year draws to a close. This seasonal variation not only offers a refreshing experience for those exploring the stunning landscapes of Itatiaia but also underscores the region's delightful blend of nature and climate.
Weather in Itatiaia varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Itatiaia, focusing on differences in temperature, rainfall, humidity, and UV levels.
In December, temperatures range from a mild 12°C (53°F) to a hot 32°C (89°F), with an average of 22°C (71°F). The month is characterized by significant rainfall, averaging 414 mm (16.3 in) over 26 days, contributing to a humidity level of 75%. In contrast, January sees slightly warmer temperatures, with a minimum of 15°C (60°F) and an average of 23°C (73°F), peaking at 32°C (90°F). Rainfall decreases to 291 mm (11.5 in) over 20 days, resulting in higher humidity at 85%. For a closer look at the weather patterns in January, visit Itatiaia weather in January.
December and February offer distinct weather patterns that reflect the transition from one phase of summer to another. In December, temperatures range from a minimum of 12°C (53°F) to a maximum of 32°C (89°F), with an average of 22°C (71°F). This month experiences higher precipitation, totaling 414 mm (16.3 in) over 26 days, and the humidity is at 75%. In contrast, February sees slightly warmer temperatures, with a minimum of 15°C (60°F) and a maximum of 33°C (92°F), while maintaining an average of 22°C (72°F). Precipitation decreases to 333 mm (13.1 in) over 22 days, but humidity rises to 85%. For a detailed look at what to expect during February in Itatiaia, check Itatiaia weather in February.
December and March exhibit similar average temperatures, hovering around 22°C (72°F), but slight differences can be observed in their weather patterns. December tends to be wetter, with 414 mm (16.3 in) of rain over 26 days compared to March's 281 mm (11.1 in) over 20 days, making March the drier month. Additionally, humidity levels are higher in March at 86%, compared to December's 75%. Both months feature mild minimum temperatures, with December at 12°C (53°F) and March slightly warmer at 13°C (55°F), while maximum temperatures remain almost identical, reaching 32°C (89°F) in December and 31°C (89°F) in March. For more detailed information, you can visit Itatiaia weather in March.
When comparing the weather in December and April, December showcases a wider temperature range, with minimums reaching 12°C (53°F) and maximums peaking at 32°C (89°F). In contrast, April experiences slightly cooler temperatures overall, with a minimum of 11°C (52°F) and a maximum of 31°C (88°F). Additionally, December is characterized by significantly higher precipitation, with 414 mm (16.3 in) falling over 26 days, compared to April's 119 mm (4.7 in) over 16 days. The humidity levels in April also rise to 83%, slightly higher than December's 75%. For a detailed look at the climate specifics, you can refer to Itatiaia weather in April.
In December, temperatures are generally warmer, with a minimum of 12°C (53°F) and an average of 22°C (71°F), peaking at 32°C (89°F). This month also sees a significant amount of rainfall, totaling 414 mm (16.3 in) over 26 days, contributing to a humidity level of 75%. In contrast, May presents cooler conditions, with a minimum temperature of 6°C (42°F) and an average of 18°C (64°F), reaching a maximum of 28°C (83°F). The precipitation during this month is much lighter at 74 mm (2.9 in) spread over just 10 days, with humidity slightly higher at 81%. For more detailed information, you can check Itatiaia weather in May.
In December, the weather is significantly warmer, with temperatures ranging from a minimum of 12°C (53°F) to a maximum of 32°C (89°F) and an average of 22°C (71°F). The month also sees considerable precipitation, totaling 414 mm (16.3 in) over 26 days, combined with a humidity level of 75%. In contrast, June experiences milder temperatures, with a minimum of 7°C (46°F), an average of 18°C (64°F), and a maximum of 29°C (84°F). June is much drier, with only 40 mm (1.6 in) of rain over 9 days and a slightly higher humidity of 80%. For more detailed insights into the weather conditions during this month, check out Itatiaia weather in June.
In December, the weather is considerably warmer, with temperatures ranging from a minimum of 12°C (53°F) to a maximum of 32°C (89°F), while the average temperature sits at 22°C (71°F). This month experiences significant precipitation, totaling 414 mm (16.3 in) over 26 days, and maintains a humidity level of 75%. In contrast, July is cooler and drier, with temperatures ranging from a minimum of 5°C (40°F) to a maximum of 27°C (81°F) and an average of 16°C (61°F). July sees much less rainfall, only 33 mm (1.3 in) across 5 days, and experiences a slightly higher humidity of 76%. For more details, check out Itatiaia weather in July.
When comparing the weather in December and August, notable differences emerge. December boasts a warmer climate, with temperatures ranging from a minimum of 12°C (53°F) to a maximum of 32°C (89°F) and an average of 22°C (71°F). In addition, December experiences significant rainfall, totaling 414 mm (16.3 in) over 26 days, accompanied by a relatively high humidity level of 75%. In contrast, August is cooler, with temperatures ranging from a minimum of 5°C (41°F) to a maximum of 30°C (86°F) and an average of 17°C (63°F). The month sees much less precipitation, with only 71 mm (2.8 in) falling over 9 days and humidity at a slightly lower 73%. For a more detailed look at August weather in specific areas, check Itatiaia weather in August.
When comparing the weather in December and September, December tends to be warmer and wetter. In December, average temperatures range from a minimum of 12°C (53°F) to a maximum of 32°C (89°F), with high humidity at 75%. This month also sees considerable rainfall, with 414 mm (16.3 in) over 26 days. In contrast, September's temperatures are slightly cooler, with a minimum of 8°C (47°F) and a maximum of 33°C (92°F). Additionally, September experiences much less precipitation, totaling 90 mm (3.5 in) across 11 days, and slightly lower humidity at 68%. For more detailed insights on September weather, you can explore Itatiaia weather in September.
In comparing the weather of December and October, it's evident that December experiences slightly higher temperatures, averaging around 22°C (71°F), compared to October's average of 21°C (69°F). However, October can reach a maximum of 34°C (93°F), making it the hotter month at its peak, whereas December's maximum is 32°C (89°F). Precipitation also varies significantly; December sees 414 mm (16.3 in) of rain over 26 days, while October has a more manageable 200 mm (7.9 in) across 21 days, resulting in lower humidity levels of 61% for October compared to 75% for December. For more detailed insights, check out Itatiaia weather in October.
In December, the weather tends to be slightly warmer compared to November, with average temperatures rising from 20°C (69°F) in November to 22°C (71°F) in December. Both months share the same maximum temperature of 32°C (89°F), but December experiences a higher minimum temperature of 12°C (53°F) compared to November's 11°C (52°F). Notably, December is significantly wetter, with precipitation reaching 414 mm (16.3 in) over 26 days, compared to November's 289 mm (11.4 in) over 21 days. Additionally, December's humidity levels are slightly elevated at 75%, while November has a humidity of 72%. For more details, check out Itatiaia weather in November.
As December rolls into Itatiaia, the weather transforms into a humid and vibrant tapestry, marking a significant departure from the cooler months. With a delightful blend of warm days and mild nights, this month feels considerably warmer than its predecessors, inviting both locals and tourists to embrace the beauty of the season. The increased precipitation also enhances the lushness of the landscape, although with nearly 26 days of rainfall, it's wise to keep an umbrella handy. Overall, December's higher humidity and rainfall create a contrast that enriches the natural scenery of Itatiaia, making it a unique and enchanting time to visit. For a more detailed overview, explore the Itatiaia Climate.