Last updated: August 21, 2025
In December, Guarulhos, Brazil, experiences a vibrant mix of warm temperatures and noticeable humidity. With maximum highs reaching 33°C (92°F) and average temperatures around 22°C (72°F), the days are typically hot and inviting. However, the month also brings significant rainfall, accumulating to 150 mm (5.9 in) over approximately 22 days. This combination of warmth and 80% humidity creates a lush, tropical atmosphere, perfect for enjoying the rich flora and festive spirit of the holiday season in this bustling city.
In December, Guarulhos, Brazil welcomes the onset of summer with mild temperatures that evoke a sense of warmth and vibrancy. With a minimum of 12°C (54°F) and an average of 22°C (72°F), the weather is perfect for outdoor festivities. The mercury can rise to a comfortable maximum of 33°C (92°F), ensuring plenty of sunshine graces the city. As the year comes to a close, December's warmth follows a trend of gradually increasing temperatures from the cooler months, making it an ideal time to explore Guarulhos’ cultural sites or enjoy its lush parks. This month beautifully bridges the lingering coolness of spring with the full embrace of summer, offering a delightful climate that invites both relaxation and adventure.
In December, Guarulhos experiences a significant uptick in rainfall, with 150 mm (5.9 in) of precipitation recorded over an average of 22 days. This marks a notable increase compared to the preceding months, where rain was less frequent and less voluminous. Unlike the dry stretches of May and July, which saw as little as 2.2 mm (0.09 in) across 7 days, December not only brings substantial moisture but also reflects the transition into the region's wetter season. The frequency of rainy days in December emphasizes a shift from the earlier months, indicating that year-end celebrations may often be accompanied by a drizzle, enriching the lush landscapes of this vibrant Brazilian city.
In Guarulhos, Brazil, December sees a return to a more humid atmosphere, with levels reaching 80%. After peaking at 88% in the early summer months of January and February, humidity gradually declines throughout the year, hitting its lowest point at 50% in October. As the rainy season approaches, November's rise to 75% sets the stage for December's slight increase, reminding residents that humidity is a constant companion in this vibrant region. This trends showcase the shifting climate patterns, where the wet season dictates a more humid air, adding a rich texture to the local environment as the year concludes.
In December, Guarulhos experiences a UV Index of 15, classified as extreme, resulting in a burn time of just 10 minutes. This pattern of high UV exposure continues from the previous months, notably with January and February reaching a peak index of 16 and 15, respectively. Throughout the year, the trend shows that the UV Index remains consistently high, particularly from September to December, indicating a significant risk for sunburn and skin damage during these months. After a dip in UV levels during June and July, the intensity ramps up again, making sun protection crucial for residents and visitors alike. For more detailed information, visit Guarulhos UV Index.
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December in Guarulhos, Brazil, shines brightly with an impressive 318 hours of sunshine, marking the peak of a gradually increasing trend throughout the year. Starting with 251 hours in January, the city experiences a consistent ascent in sunny days, reaching its zenith in December. Each month sees fluctuating but generally rising totals, with March standing out as a particularly sunny month at 305 hours. As the year progresses, residents and visitors alike relish longer days of warmth and light, especially during the festive holiday season. With December’s sunshine outpacing all previous months, it perfectly encapsulates the vibrant energy that characterizes this Brazilian locale during the summer's peak.
In Guarulhos, Brazil, the likelihood of sunny weather in December stands at 31%, placing it in the middle range of sunshine chances for the year. The trend shows that as the year progresses from the often overcast early months, there is a gradual increase in sunshine, peaking during the winter months of July with an impressive 55%. However, as December approaches, the probability of clear skies dips slightly from November's 33%. This suggests that while December can offer some sunny days, it also shares the characteristic of the earlier wetter months, making clear sunny weather a delightful yet somewhat unpredictable prospect. Overall, December serves as a gentle reminder of the wavering transition from the year's heaviest rains to the drier, sunnier spells ahead.
In Guarulhos, Brazil, daylight duration exhibits a fascinating cyclical pattern throughout the year. Starting from a peak of 13 hours in January and a gradual decline to 10 hours in the middle months of May through July, the daylight hours then climb back to 13 hours by December. Notably, the transition from the longest days of summer to the shorter days of winter underscores the region's tropical climate, where a brief resurgence in daylight occurs in August and September before reaching its annual zenith again in November and December. This rhythm not only highlights the seasonal changes but also provides a beautiful backdrop for the vibrant life in Guarulhos, creating a unique blend of warmth and light during the festive holiday season.
As December arrives in Guarulhos, Brazil, the wind begins to whisper a gentle story of transition. With an average wind speed of 2.9 m/s (6 mph), December maintains a moderate breeze, mirroring the slight uptick in winds observed in the late spring and early summer months. This trend reflects a gradual escalation, as the region experiences a shift from the calmer earlier months, peaking in October with its highest winds at 3.5 m/s (8 mph). While December's winds might be quieter than October's, they still carry the promise of warmth and vitality, perfectly complementing the festive spirit of the season. Overall, the wind patterns in Guarulhos suggest a rhythmic dance, where each month brings its own unique character, inviting locals and visitors alike to enjoy the soothing embrace of nature’s breath.
Weather in Guarulhos varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Guarulhos, focusing on differences in temperature, rainfall, humidity, and UV levels.
December and January exhibit similar temperature ranges in Guarulhos, with January experiencing slightly warmer minimums and averages. December's temperatures range from a minimum of 12°C (54°F) to a maximum of 33°C (92°F), while January sees temperatures starting at 15°C (59°F) and averaging 23°C (74°F). Precipitation is notably higher in January, totaling 192 mm (7.6 in) across 19 days compared to December's 150 mm (5.9 in) over 22 days. Additionally, January's humidity level rises to 88%, compared to December's 80%, making it feel more humid overall. For a more detailed outlook on January's weather, check out Guarulhos weather in January.
In comparing the weather between December and February, both months feature similar average temperatures, hovering around 22°C (72°F), but February offers slightly higher minimum and maximum temperatures, with lows of 15°C (59°F) and highs reaching 34°C (93°F). Precipitation is also noteworthy; December receives 150 mm (5.9 in) of rain over 22 days, while February sees a bit more rainfall at 166 mm (6.5 in) over 18 days. Additionally, February tends to be more humid, with levels rising to 88% compared to December's 80%. For more specific details on February weather, visit Guarulhos weather in February.
In December, temperatures in Guarulhos range from a minimum of 12°C (54°F) to a maximum of 33°C (92°F), with an average temperature of 22°C (72°F). The month experiences considerable rainfall, totaling around 150 mm (5.9 in) across approximately 22 days, while humidity levels are around 80%. In contrast, March sees slightly warmer minimum temperatures at 14°C (57°F) and a similar average of 22°C (73°F), but a marginally cooler maximum of 32°C (90°F). Precipitation in March is slightly lower at 147 mm (5.8 in), occurring over 18 days, with humidity increasing to 87%. For a more detailed look at the weather in March, you can visit Guarulhos weather in March.
In comparing the weather between December and April, December tends to be warmer overall, with average temperatures ranging from a minimum of 12°C (54°F) to a maximum of 33°C (92°F). In contrast, April showcases slightly cooler averages, with temperatures ranging from 11°C (52°F) to 31°C (88°F). December also experiences significantly more rainfall, totaling 150 mm (5.9 in) over 22 days, while April sees only 58 mm (2.3 in) of precipitation across 9 days. Despite the slight drop in temperature, April has a marginally higher humidity level at 84%, compared to December's 80%. For more detailed insights, check Guarulhos weather in April.
In December, the weather is markedly warmer, with temperatures ranging from a minimum of 12°C (54°F) to a maximum of 33°C (92°F), averaging around 22°C (72°F). This month also experiences significant rainfall, totaling 150 mm (5.9 in) over approximately 22 days, and a high humidity level of 80%. In contrast, May presents a cooler climate, with temperatures fluctuating between a minimum of 6°C (43°F) and a maximum of 29°C (84°F), averaging 18°C (65°F). Rainfall in May is considerably less at 56 mm (2.2 in) spread over just 7 days, while humidity remains slightly lower at 79%. For those interested in more specific details, you can check the Guarulhos weather in May.
In comparing the weather of December and June, December tends to be warmer and more humid. With temperatures ranging from a minimum of 12°C (54°F) to a maximum of 33°C (92°F), December features an average temperature of 22°C (72°F). It also experiences significant precipitation, with 150 mm (5.9 in) falling over 22 days, resulting in a humidity level of 80%. In contrast, June is cooler, with temperatures ranging from a minimum of 7°C (45°F) to a maximum of 28°C (82°F) and an average of 18°C (64°F). Precipitation is much lighter in June at 48 mm (1.9 in) over just 7 days, and humidity is slightly lower at 77%. For more specific details about June weather, you can visit Guarulhos weather in June.
When comparing the weather in December and July, we observe significant differences in temperature and precipitation. December boasts warmer conditions with minimum temperatures around 12°C (54°F), averaging 22°C (72°F), and reaching highs of 33°C (92°F). This month also experiences considerable rainfall, totaling 150 mm (5.9 in) across 22 days and high humidity at 80%. In stark contrast, July has much cooler temperatures, with minimums dipping to 2°C (35°F) and an average of 16°C (62°F), peaking at 29°C (84°F). Additionally, July sees far less precipitation, with only 29 mm (1.1 in) over just 3 days and a lower humidity of 72%. For more specific details about the weather in Guarulhos during July, you can check this link: Guarulhos weather in July.
When comparing the weather in December and August, notable differences emerge. December sees much warmer temperatures, with minimums around 12°C (54°F) and an average high of 33°C (92°F), while August experiences cooler conditions, where temperatures dip to a minimum of 5°C (42°F) and an average high of 31°C (89°F). Additionally, December is characterized by significantly higher precipitation levels of 150 mm (5.9 in) spread over 22 days, compared to August's much lighter rainfall of 64 mm (2.5 in) over just 8 days. The humidity in December is also higher at 80%, versus a more comfortable 65% in August. For more detailed information on the weather during August, you can check Guarulhos weather in August.
December and September showcase notable differences in weather patterns. December tends to be warmer, with average temperatures around 22°C (72°F) and maximums reaching up to 33°C (92°F), while September has a slightly cooler average of 20°C (68°F) and maximum temperatures peaking at 34°C (94°F). However, September typically experiences lower humidity levels at 58%, compared to December's high humidity of 80%. Additionally, December sees significantly more precipitation, averaging 150 mm (5.9 in) over 22 days, whereas September benefits from a much drier climate, receiving only 47 mm (1.9 in) of rain over 6 days. For a closer look at the weather specifics in September, you can check out Guarulhos weather in September.
December weather in Guarulhos is characterized by warm temperatures, with a minimum of 12°C (54°F) and an average high of 33°C (92°F), alongside moderate precipitation of 150 mm (5.9 in) spread over 22 days and high humidity levels of 80%. In contrast, October offers slightly cooler temperatures, with a minimum of 12°C (53°F) and a maximum of 36°C (97°F), but sees less rainfall, totaling 135 mm (5.3 in) over 16 days and a more comfortable humidity of 50%. Overall, while both months experience warm temperatures, October tends to be drier and less humid. For a closer look at October weather details, visit Guarulhos weather in October.
In comparing the weather of December and November, December typically experiences slightly warmer conditions, with an average temperature of 22°C (72°F) compared to November's 20°C (69°F). However, November boasts a higher maximum temperature of 34°C (94°F), which is hotter than December's peak of 33°C (92°F). Precipitation levels are also noteworthy; December sees more rain, accumulating 150 mm (5.9 in) over 22 days, while November receives 126 mm (5.0 in) over 16 days, resulting in a wetter month. Additionally, December's humidity is higher at 80%, compared to November's 75%. For more details, you can refer to Guarulhos weather in November.
As December rolls in, Guarulhos transforms into a vibrant landscape marked by warm temperatures and increased humidity. With highs reaching up to 33°C, the month contrasts sharply with the cooler and drier periods earlier in the year, inviting both locals and tourists to embrace the summer vibes. However, the wet season kicks in, bringing along frequent showers that add to the lush greenery and vitality of the region. While the atmosphere remains humid at around 80%, this blend of warmth and rain showcases Guarulhos' character, making it a unique experience compared to the more temperate months. For those interested in delving deeper into Guarulhos weather patterns, check out Guarulhos Climate.