Last updated: August 21, 2025
Discover the December weather in São José do Rio Preto, Brazil, where temperatures soar with a maximum of 35°C (95°F) and an inviting average of 25°C (78°F). As the month unfolds, expect a refreshing dip to a minimum of 17°C (62°F) during the cooler nights. With 171 mm (6.7 in) of rain spread across 19 days, the humidity levels hover around a muggy 80%, creating a vibrant atmosphere that enriches the lush landscapes. Whether you're exploring the city or enjoying its natural beauty, December's climate is a blend of warmth and occasional showers, perfect for experiencing everything São José do Rio Preto has to offer.
In Sao Jose do Rio Preto, Brazil, December heralds the onset of summer, bringing with it warm and inviting temperatures. With a minimum of around 17°C (62°F) and reaching a maximum of 35°C (95°F), the month presents a delightful average temperature of 25°C (78°F), making it a perfect time for outdoor activities and festivities. This warmth is consistent with the gradual rise in temperatures observed throughout the preceding months, especially notable when compared to cooler April and May. As the year winds down, residents and visitors alike can enjoy the increasingly pleasant days, making December an ideal time to explore the vibrant culture and beautiful landscapes of this dynamic Brazilian city.
In December, Sao Jose do Rio Preto experiences a notable uptick in precipitation, with 171 mm (6.7 in) of rainfall accumulated over 19 days. This trend of increased moisture follows the wetter months of November, which recorded 163 mm (6.4 in), creating a seamless transition into the rainy season. As the year draws to a close, December's precipitation reflects a pattern of higher rainfall typical of this period, contrasting sharply with the drier months like May and June, which see minimal precipitation. Such climatic fluctuations not only shape the region's lush landscape but also highlight the significant role December plays in replenishing local water resources.
In December, Sao Jose do Rio Preto experiences a notable increase in humidity, reaching a level of 80%. This marks a significant rise from the drier months of October and November, where humidity levels dipped to 35% and 65%, respectively. The trend throughout the year reveals a steady decline in humidity from the muggy summer months, with January hitting a high of 85% and gradually decreasing to a low in August at just 48%. However, as the year comes to a close, the humidity begins to rebound, signaling a shift back toward the more humid conditions characteristic of the region's warmer months. This fluctuation highlights Sao Jose do Rio Preto's transition from the dry season into a more tropical atmosphere, making December a month where one can still feel the lingering warmth of summer in the air.
As December unfolds in Sao Jose do Rio Preto, Brazil, residents and visitors can expect an intense UV Index of 16, classifying this month in the extreme exposure category with a rapid burn time of just 10 minutes. Following a pattern consistent from the previous months, December marks a peak period, mirroring February's levels while remaining consistent with the high indices seen from January through November. This trend emphasizes the importance of sun protection throughout the year, particularly in months where the UV index remains above 10. To safeguard your skin during these hotter months, be sure to check the details and recommendations at Sao Jose do Rio Preto UV Index.
UV Risk Categories
In Sao Jose do Rio Preto, December marks a delightful peak in sunshine, offering an impressive 319 hours of sunlight. This delightful month wraps up the year on a high note, following the trend of increasing daylight that begins in September. The gradual climb in sunlight—culminating in December—reflects the enchanting Brazilian summer, where the warmth and brightness intensify, inviting both residents and visitors to bask in the glow. As the year transitions from the vibrant energy of summer, December's ample sunshine serves as a glorious finale, setting the stage for the vibrant festivities of the holiday season.
As December rolls in, Sao Jose do Rio Preto experiences a moderate 56% chance of sunny weather, marking a notable transition from the brighter months of mid-year. The trend demonstrates that as the year progresses, the likelihood of sunny days consistently peaks during the winter months, particularly in July with an impressive 84%, before gradually tapering off in the late spring and early fall. December stands out as a time when residents can still anticipate a good mix of sunshine, providing a delightful early-summer ambiance. Compared to the previous months, which see a drop in sunny chances, December maintains a robust opportunity for outdoor activities, making it a charming month for those seeking warmth and light in Brazil.
In São José do Rio Preto, Brazil, the daylight duration exhibits a dynamic rhythm throughout the year. Starting strong in January and November with an impressive 13 hours of daylight, the city gradually sees a decline into 10 hours in the heart of winter from June to July. As the year progresses, daylight begins to extend once again, with December closing the year on a vibrant note, echoing January's 13 hours. This cyclical pattern highlights a gradual decrease in daylight during the colder months, followed by a rejuvenating return as summer approaches, creating a unique balance that characterizes the region's climate and lifestyle.
As December settles in Sao Jose do Rio Preto, the average wind speed hovers around 2.7 m/s (6 mph), marking a slight decrease from the more blustery conditions of the previous months. Typically, this transition reflects a pattern where the winds start to mellow towards year-end after a progressive uptick during mid-year, with July and August seeing the strongest gusts at 2.9 m/s (6 mph) and 3.2 m/s (7 mph), respectively. Following this seasonal trend, the winds in December remain gentle yet refreshing, inviting residents and visitors alike to embrace the warmth and festivities of the summer season. This soothing breeze serves as a gentle reminder of nature's rhythm, as the winds become less pronounced, creating a calm atmosphere perfect for enjoying outdoor pursuits.
Weather in Sao Jose do Rio Preto varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Sao Jose do Rio Preto, focusing on differences in temperature, rainfall, humidity, and UV levels.
In comparing the weather of December and January, we see a gradual increase in both minimum temperatures and humidity levels. December features minimum temperatures around 17°C (62°F) and average temperatures peaking at 35°C (95°F), while January starts off slightly warmer with minimum temperatures of 19°C (66°F) and a max of 35°C (96°F). Precipitation levels are quite similar, with December receiving 171 mm (6.7 in) over 19 days and January slightly higher at 174 mm (6.8 in) across 17 days. Notably, January also experiences increased humidity, rising to 85% compared to December's 80%. This means both months are visibly humid and can be quite rainy, but January tends to be just a touch warmer and more humid overall. For those interested, additional details can be found in the article about Sao Jose do Rio Preto weather in January.
In December, temperatures in Sao Jose do Rio Preto range from a minimum of 17°C (62°F) to a maximum of 35°C (95°F), with an average temperature of 25°C (78°F). The month experiences significant rainfall, totaling 171 mm (6.7 in) over 19 days, contributing to a humidity level of 80%.
In comparison, February offers slightly cooler temperatures, with a minimum of 16°C (62°F) and a maximum of 35°C (96°F), while the average remains the same at 25°C (78°F). February also sees an increase in precipitation, recording 181 mm (7.1 in) over 18 days and a higher humidity level of 87%.
For more detailed information, you can check Sao Jose do Rio Preto weather in February.
In December, the weather in Sao Jose do Rio Preto is generally warm, with temperatures ranging from a minimum of 17°C (62°F) to a maximum of 35°C (95°F) and an average of 25°C (78°F). This month sees significant rainfall, with a total precipitation of 171 mm (6.7 in) across about 19 days, contributing to a humidity level of around 80%.
In comparison, March experiences slightly cooler temperatures, with a minimum of 16°C (62°F), an average of 25°C (78°F), and a maximum of 34°C (94°F). The total precipitation decreases to 113 mm (4.5 in) over 13 days, leading to a higher humidity of 86%. For more details on the weather in March, you can visit Sao Jose do Rio Preto weather in March.
Overall, while both months share similar average temperatures, December is characterized by more rainfall and slightly lower humidity compared to March.
In December, Sao Jose do Rio Preto experiences warmer temperatures, with a minimum of 17°C (62°F) and a maximum reaching up to 35°C (95°F). The month is also marked by higher rainfall, totaling 171 mm (6.7 in) over 19 days, contributing to a humidity level of 80%. In contrast, April offers slightly cooler weather, with temperatures ranging from a minimum of 13°C (56°F) to a maximum of 34°C (94°F). Additionally, April is considerably drier, receiving only 52 mm (2.1 in) of precipitation over just 5 days, and maintaining a similar humidity level of 79%. For more detailed information on April weather, visit Sao Jose do Rio Preto weather in April.
December and May showcase distinctly different weather patterns. In December, temperatures range from a minimum of 17°C (62°F) to a maximum of 35°C (95°F), with an average temperature of 25°C (78°F) and substantial precipitation of 171 mm (6.7 in) over 19 days, leading to a high humidity level of 80%. In contrast, May exhibits milder conditions, with temperatures dipping to a minimum of 6°C (43°F) and peaking at 33°C (92°F), averaging 22°C (71°F). Precipitation in May is significantly lower at 33 mm (1.3 in) over just 4 days, accompanied by reduced humidity of 68%. For a detailed look at May's weather, visit Sao Jose do Rio Preto weather in May.
In December, the weather in Sao Jose do Rio Preto is much warmer and more humid, with temperatures ranging from a minimum of 17°C (62°F) to a maximum of 35°C (95°F), accompanied by high humidity levels of 80%. This month also sees significant rainfall, with about 171 mm (6.7 in) of precipitation over 19 days. In contrast, June offers a cooler climate, featuring temperatures that range from a minimum of 8°C (47°F) to a maximum of 32°C (90°F). The humidity is notably lower at 60%, and rainfall is minimal, with only 6 mm (0.2 in) over just 1 day. For more detailed information about June weather, you can refer to this link: Sao Jose do Rio Preto weather in June.
When comparing the weather in December and July, the contrasts are striking. December experiences significantly warmer temperatures, with minimums around 17°C (62°F) and maximums reaching 35°C (95°F), while July sees cooler ranges, with minimum temperatures dropping to 4°C (39°F) and maximums peaking at 33°C (91°F). Additionally, December is characterized by high humidity at 80% and considerable precipitation, averaging 171 mm (6.7 in) over 19 days, in stark contrast to the dry conditions of July, which boasts only 6 mm (0.2 in) of rainfall on no days. As a result, July is notably drier and cooler, making it a distinct departure from the warm and rainy December climate. For more specific insights on July weather, check out Sao Jose do Rio Preto weather in July.
In December, Sao Jose do Rio Preto experiences much warmer temperatures compared to August, with lows around 17°C (62°F) and highs reaching up to 35°C (95°F). The average temperature is notably higher at 25°C (78°F), while August sees cooler temperatures, with minimums dropping to 7°C (45°F) and averaging 22°C (73°F). Additionally, December is characterized by significantly more rainfall, totaling 171 mm (6.7 in) over 19 days, compared to just 23 mm (0.9 in) over 2 days in August. The humidity is also markedly higher in December at 80%, compared to 48% in August. For more detailed weather information, check out Sao Jose do Rio Preto weather in August.
When comparing the weather in December and September, notable differences emerge in temperature, precipitation, and humidity levels. In December, the temperatures range from a comfortable minimum of 17°C (62°F) to a maximum of 35°C (95°F), with an average of 25°C (78°F). However, this month also sees higher humidity at 80% and considerable precipitation, totaling 171 mm (6.7 in) across 19 days. In contrast, September showcases cooler temperatures, with a minimum of 11°C (53°F) and a maximum of 40°C (104°F), averaging 26°C (79°F). This month enjoys much lower humidity at 41% and significantly less rain, with only 23 mm (0.9 in) of precipitation over just 3 days. For a more detailed look at the weather in September, you can visit Sao Jose do Rio Preto weather in September.
December and October weather in Sao Jose do Rio Preto show some notable differences. In December, the minimum temperature is slightly higher at 17°C (62°F) compared to October's 15°C (59°F), while the average temperature remains relatively similar, with December averaging 25°C (78°F) and October at 26°C (79°F). However, December experiences a maximum temperature of 35°C (95°F), which is lower than October's peak of 41°C (105°F). Additionally, December sees a significant increase in precipitation, with 171 mm (6.7 in) over 19 days, contrasting with October's 110 mm (4.3 in) across just 11 days. The humidity also rises in December, reaching 80%, compared to October's drier 35%. For more detailed insights on October's climate, check out Sao Jose do Rio Preto weather in October.
In comparing the weather of December and November, we see some notable differences. December experiences a slightly warmer minimum temperature of 17°C (62°F) compared to November's 13°C (56°F), while both months share the same average temperature of 25°C (78°F). However, December's maximum temperature is marginally lower at 35°C (95°F) than November's peak of 36°C (97°F). Precipitation in December increases to 171 mm (6.7 in) over 19 days, slightly higher than November's 163 mm (6.4 in) across 16 days, suggesting a wetter month ahead. Furthermore, the humidity rises to 80% in December, contrasting with November's lower humidity level of 65%. For more details on November's weather, you can visit Sao Jose do Rio Preto weather in November.
December in São José do Rio Preto ushers in warmer temperatures and a notable shift in climate compared to the dryer months. With the mercury often peaking around 35°C (95°F) and averaging a comfortable 25°C (78°F), residents and visitors alike are greeted by a balmy atmosphere. However, December is also characterized by increased humidity and rainfall, with approximately 171 mm falling over 19 days, contributing to the city's lush greenery. The high humidity levels can make the heat feel more intense, creating a tropical vibe that can be both refreshing and challenging. For a deeper dive into how the January climate compares and further insights, visit Sao Jose do Rio Preto Climate.