Last updated: August 21, 2025
In December, São Paulo, Brazil experiences a dynamic blend of warmth and humidity, with maximum temperatures soaring to 34°C (93°F) and an average of 22°C (72°F), offering a vibrant atmosphere for residents and visitors alike. Nights can be refreshingly cool, dipping to a minimum of 12°C (54°F). This month also marks a significant increase in rainfall, with 143 mm (5.6 in) spread over 21 days, contributing to the lush greenery characteristic of the region. With humidity levels around 80%, the air feels notably moist, enhancing the tropical experience of this bustling metropolis. Be prepared for a mix of sunny days and refreshing showers as São Paulo transitions into its verdant summer season.
In December, São Paulo embraces the warm embrace of summer, with temperatures ranging from a comfortable 12°C (54°F) as a minimum to a scorching 34°C (93°F) at its peak. The average temperature settles at a pleasant 22°C (72°F), providing a perfect backdrop for the city's vibrant outdoor festivities and holiday celebrations. As the year winds down, the heat reaches a crescendo reminiscent of the preceding months, yet remains slightly milder compared to the record highs of October and November. This warming trend not only invites residents and tourists to indulge in the city's rich culture but also marks the onset of the rainy season, adding a refreshing twist to the sultry summer days.
In December, São Paulo experiences a noticeable uptick in precipitation, with 143 mm (5.6 in) of rainfall spread over 21 days. This marks a shift from the drier months of mid-year, highlighting the onset of the rainy season. The city's rainfall in December is significant, falling just short of the peak January level of 177 mm (7.0 in), indicating that the wetter months are now in full swing. While the number of rainy days increases, the total precipitation shows a consistent trend of tapering off slightly from the earlier months of spring. This pattern underscores the transition from the dry spell of winter, as Sao Paulo welcomes the rains that nourish its vibrant landscape. The frequent showers not only contribute to the lush beauty of the region but also play a crucial role in recharging water supplies ahead of the hotter months.
In December, Sao Paulo experiences humidity levels at 80%, reflecting a slight increase as the city transitions from the drier months of October and November. This uptick is part of a broader trend where humidity remains relatively high at the onset of summer, with levels peaking in January and February at 88%. While December shows improvement over the previously recorded 50% in October, it also marks a notable contrast to the low of 65% experienced in August. Overall, the humidity in Sao Paulo exhibits a seasonal pattern, with the year's latter months gradually reviving moisture in the air, setting the stage for the warm and humid embrace of the summer season ahead.
In December, Sao Paulo experiences a UV Index of 15, classifying the exposure level as extreme with a burn time of just 10 minutes. This trend of high UV exposure continues from the previous months, highlighting that December, much like January and February, demands vigilant sun protection. The transition into late spring reflects a consistent pattern of elevated UV levels, driving home the importance of safeguarding your skin during outdoor activities. As you soak in the vibrant summer atmosphere, remember to stay informed about the UV index to prioritize your health. For more detailed insights, visit Sao Paulo UV Index.
UV Risk Categories
In December, Sao Paulo basks in a glorious 317 hours of sunshine, marking it as one of the sunniest months of the year. This radiant peak contrasts beautifully with the gradual increase in daylight hours seen throughout the year, starting from 245 hours in January and steadily climbing. The trend showcases a notable rise as the year progresses, with December reaching its zenith just shy of the summer months ahead. Notably, months like March and November also enjoy ample sunshine, with 310 and 296 hours respectively, but December distinctly stands out, wrapping up the year on a brightly optimistic note. As the city embraces the warmth, it invites both locals and visitors to revel in its vibrant atmosphere and festive spirit.
In Sao Paulo, Brazil, December presents a 33% chance of sunny weather, aligning closely with the preceding month of November, which also shows a similar likelihood for sunshine. While the city's weather is characterized by a drop in sunlit days in the latter part of the year, December's percentage indicates a slight uptick compared to the notably gloomy October at just 14%. Interestingly, this month shares its sunny prospects with late spring and early summer months like May and September, suggesting that while the sun may play hide and seek, there are still opportunities for warm, bright days as the year winds down.
In Sao Paulo, Brazil, December brings a bright finale to the year with an impressive 13 hours of daylight. Following the gradual descent from January's peak of 13 hours, the city enjoys consistent daylight during this festive month, mirroring the long days of November. As summer approaches in the Southern Hemisphere, daylight duration elongates steadily, with a noticeable drop occurring in the winter months of May through July, where sunshine dips to just 10 hours. However, as spring arrives in August, the days begin to lengthen once again, marking a joyous return to longer, sun-filled days. December's radiant light not only enhances the festive atmosphere but also signifies the cyclical rhythm of sunlight that Sao Paulo experiences throughout the year.
As December arrives in São Paulo, the city's breezes reflect a gradual uplift in wind speeds that characterize the late year. With an average wind speed of 3.1 m/s (7 mph), December marks a noticeable shift from the gentler currents of earlier months, showcasing a lively transition as the year draws to a close. Throughout the year, wind speeds in São Paulo have exhibited a subtle upward trend, particularly peaking in the late spring and early summer months of October and November. This trend culminates in December, where the winds become a refreshing presence, hinting at the vibrant energy that fills the air during the festive season. The mild, steady airflow not only enhances the city's dynamic atmosphere but also invites residents and visitors to enjoy the vibrant streets, making December an exhilarating time to experience São Paulo's charm.
Weather in Sao Paulo varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Sao Paulo, focusing on differences in temperature, rainfall, humidity, and UV levels.
In December, temperatures in Sao Paulo range from a minimum of 12°C (54°F) to a maximum of 34°C (93°F), with an average of 22°C (72°F). The month experiences around 143 mm (5.6 in) of precipitation over 21 days, along with a humidity level of 80%. In contrast, January sees slightly warmer temperatures, with a minimum of 15°C (59°F) and an average of 23°C (74°F), while still reaching up to 34°C (93°F). Precipitation increases to 177 mm (7.0 in) over 20 days, and humidity rises to 88%. For a more detailed overview of January weather patterns, you can check Sao Paulo weather in January.
In December, temperatures in Sao Paulo typically range from a minimum of 12°C (54°F) to a maximum of 34°C (93°F), with an average temperature of 22°C (72°F). The month experiences considerable rainfall, with 143 mm (5.6 in) falling over 21 days and a humidity level of 80%. In contrast, February sees slightly warmer conditions with minimum temperatures at 15°C (59°F) and maximums soaring to 35°C (95°F), averaging 23°C (73°F). Precipitation increases to 158 mm (6.2 in), but occurs over fewer days—17 in total—resulting in a higher humidity level of 88%. For more detailed information, check this link: Sao Paulo weather in February.
In December, temperatures in São Paulo range from a minimum of 12°C (54°F) to a maximum of 34°C (93°F), with an average of 22°C (72°F). The month experiences significant rainfall, totaling 143 mm (5.6 in) over 21 days, and humidity levels hover around 80%. March, on the other hand, features slightly warmer weather with temperatures ranging from 14°C (57°F) to 33°C (91°F), averaging 23°C (73°F). Precipitation decreases slightly to 135 mm (5.3 in) over 16 days, while humidity rises to 87%. For a detailed look at March's weather, you can visit Sao Paulo weather in March.
In comparing the weather of December and April, we can observe notable differences in temperature and precipitation patterns. December typically showcases warmer weather, with temperatures ranging from a minimum of 12°C (54°F) to a maximum of 34°C (93°F), averaging around 22°C (72°F). In contrast, April experiences slightly cooler temperatures, with a minimum of 11°C (52°F) and a maximum of 31°C (89°F), averaging 20°C (69°F). Precipitation also varies significantly; December sees a substantial 143 mm (5.6 in) spread over 21 days, while April has considerably less rain at 55 mm (2.2 in) across just 9 days. Humidity levels are relatively high in both months, but April is marginally more humid at 84% compared to December's 80%. For more detailed information on weather trends, you can check Sao Paulo weather in April.
December weather in São Paulo is characterized by warmer temperatures, with minimums around 12°C (54°F) and maximums reaching up to 34°C (93°F). This month also sees significant rainfall, averaging 143 mm (5.6 in) over 21 days, resulting in high humidity levels of 80%. In contrast, May experiences milder conditions with temperatures ranging from a minimum of 5°C (42°F) to a maximum of 29°C (85°F) and a lower total precipitation of 48 mm (1.9 in) over just 6 days. Humidity during May is slightly lower at 79%. For a more detailed look at the weather during May, you can check Sao Paulo weather in May.
In December, the weather is warmer and more humid, with temperatures ranging from a minimum of 12°C (54°F) to a maximum of 34°C (93°F), averaging around 22°C (72°F). This month also experiences significant rainfall, with precipitation reaching 143 mm (5.6 in) spread over 21 days, resulting in a humidity level of 80%. In contrast, June is cooler and drier, featuring temperatures that range from a minimum of 8°C (47°F) to a maximum of 28°C (82°F), with an average of 18°C (64°F). Rainfall is much lighter in June, totaling only 45 mm (1.8 in) across just 6 days, and humidity decreases slightly to 77%. For more details, check out Sao Paulo weather in June.
December and July present contrasting weather patterns in terms of temperature and precipitation. In December, temperatures range from a minimum of 12°C (54°F) to a maximum of 34°C (93°F), with an average of 22°C (72°F). This month also sees higher humidity at 80% and considerable precipitation, with 143 mm (5.6 in) spread over 21 days, making it quite rainy. In contrast, July offers cooler temperatures, with a minimum of 2°C (36°F) and a maximum of 29°C (85°F), averaging 17°C (62°F). Precipitation is minimal during this month, totaling only 25 mm (1.0 in) over just 2 days, and the humidity settles at a lower level of 72%. For more details on the July weather in Sao Paulo, you can visit Sao Paulo weather in July.
In comparing the weather of December and August, December is characterized by warmer temperatures, with averages around 22°C (72°F) and highs reaching up to 34°C (93°F), while August boasts cooler averages of 17°C (63°F) and maximums of 32°C (89°F). December also experiences higher humidity levels at 80% and significantly more precipitation, accumulating 143 mm (5.6 in) over 21 days, whereas August sees just 57 mm (2.2 in) across only 7 days. This stark contrast highlights December as a wetter and more humid month compared to the drier and cooler conditions of August. For a detailed look at August weather, you can visit Sao Paulo weather in August.
December and September in São Paulo showcase contrasting weather patterns. In December, temperatures range from a minimum of 12°C (54°F) to a maximum of 34°C (93°F), with an average of 22°C (72°F). The month is characterized by higher humidity levels at 80% and significant precipitation, totaling 143 mm (5.6 in) over 21 days. In contrast, September experiences slightly cooler temperatures, with a range from 9°C (48°F) to 35°C (95°F) and an average of 20°C (69°F). The month is much drier, with only 40 mm (1.6 in) of rain over just 6 days and lower humidity at 58%. This makes September a more comfortable month overall, while December tends to be more humid and rainy. For more detailed insights, visit Sao Paulo weather in September.
In comparing the weather of December and October, we observe some notable differences. December features a slightly warmer average temperature of 22°C (72°F) compared to October's 21°C (70°F); however, October can occasionally reach higher maxima of up to 37°C (99°F). Additionally, December experiences more precipitation, with 143 mm (5.6 in) over 21 days, while October sees less, at 118 mm (4.6 in) across 16 days. Furthermore, December's humidity is significantly higher at 80%, contrasting with October's more comfortable 50%. For more detailed insights on October weather, visit Sao Paulo weather in October.
In December, temperatures in São Paulo range from a minimum of 12°C (54°F) to a maximum of 34°C (93°F), with an average temperature of 22°C (72°F). This month experiences higher precipitation, totaling 143 mm (5.6 in) over 21 days, and a humidity level of 80%. In comparison, November's weather is slightly milder, with temperatures ranging from 11°C (53°F) to a maximum of 35°C (96°F) and an average of 21°C (69°F). The total precipitation for November is lower at 116 mm (4.6 in) over 15 days, accompanied by a humidity level of 75%. For more details, check out Sao Paulo weather in November.
As December unfolds in São Paulo, the weather takes on a vibrant character, setting the stage for the rainy season. During this month, residents and visitors experience warmer temperatures that contrast with the cooler months, alongside higher humidity levels that create a lively tropical ambiance. Frequent showers, occurring on approximately 21 days, contribute to a notable increase in precipitation, making December significantly wetter than its drier counterparts earlier in the year. This festive, lush atmosphere invites you to enjoy the city's attractions while appreciating the unique charm of its summer-like conditions. To dive deeper into what you can expect throughout the year, check out Sao Paulo Climate.