Last updated: August 21, 2025
Experience the vibrant December weather in Piracicaba, Brazil, where temperatures soar to a maximum of 38°C (100°F) and settle at a comforting average of 25°C (78°F). While the days can be warm, the evenings bring a refreshing contrast with temperatures dipping to a minimum of 14°C (58°F). December is marked by a notable precipitation total of 112 mm (4.4 in), spread over 16 days, lending to the region’s lush scenery. With humidity levels around 83%, the air carries a rich, tropical feel, making this month an exciting time to experience the dynamic climate of Piracicaba.
In December, Piracicaba, Brazil, experiences a delightful blend of warmth and mildness as it transitions fully into summer. With minimum temperatures around 14°C (58°F) and an average hovering at 25°C (78°F), the charm of this month lies in its pleasant days. Highs can soar up to 38°C (100°F), reminiscent of the peak summer heat that the region is known for. This trend of rising temperatures from the cooler months leading up to December showcases the vibrant climate, making it an ideal time for outdoor activities and embracing the festive spirit. As the year draws to a close, the warmth of Piracicaba not only invites adventure but also promises memorable moments under the sun.
December in Piracicaba, Brazil, marks a significant transition in the wet season, featuring a precipitation total of 112 mm (4.4 in) spread over 16 days. This reflects a slight decrease from the peak rainfall experienced in January, which averages 179 mm (7.1 in). Interestingly, December shares a similar pattern with November's 115 mm (4.5 in), indicating consistent moisture as the year closes. While earlier months, like March and April, recorded considerably lower amounts, December underscores the tendency for wetter conditions as the summer approaches. The frequency of rainy days in December also emphasizes this trend, contributing to the overall lush landscape that characterizes the region during this time.
In Piracicaba, Brazil, the month of December brings a noticeable uptick in humidity, rising to 83% after a dip towards the end of the year. This increase marks a shift from the drier conditions experienced in the preceding months, particularly a low of 50% in October. As the year progresses from the arid peak of August's 59%, December's humidity signals the start of a more tropical phase, reintroducing the lush, moisture-rich environment characteristic of the region. This transitional trend showcases the seasonal rhythm of humidity in Piracicaba, highlighting a significant return to the high levels reminiscent of the early months of the year, where humidity consistently hovers above 80%.
As December rolls into Piracicaba, Brazil, the UV Index skyrockets back to an extreme level of 16, mirroring the intensity seen in the earlier months of January and February. This pattern of heightened UV exposure suggests that residents should remain vigilant, as the burn time remains a brisk 10 minutes—a clear reminder of the sun's power. Following the trend from previous months, outdoor enthusiasts should gear up with sunscreen and protective clothing to enjoy the beautiful weather while minimizing skin damage. For a detailed look at the UV Index throughout the year, check out Piracicaba UV Index.
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In Piracicaba, Brazil, the month of December shines brilliantly with 325 hours of sunlight, marking it as one of the sunniest months of the year. This vibrant increase reflects a warming trend as we transition from November's already generous 309 hours. The reliance on natural light is evident throughout the year, with a noticeable peak in sun exposure during the final month, following months like March and September, which also boast impressive totals of 322 and 310 hours respectively. The city's climate not only emphasizes the joy of longer days but also highlights the consistent sunshine that characterizes the Brazilian summer, making December a perfect time to bask in the radiant glow of Piracicaba’s sun-kissed landscape.
In December, Piracicaba, Brazil, boasts a 52% chance of sunny weather, marking a notable improvement as the year winds down. This likelihood is part of a gradual upward trend, contrasting sharply with the sunniest months, July and August, which enjoy 71% and 64% chances, respectively. As we transition from the rainy November (44%), December signals a return to more favorable conditions, blending warm summer vibes with manageable rainfall. With a nearly balanced chance of sun, December offers an inviting climate for outdoor activities, making it a delightful time for both locals and visitors to enjoy the region's natural beauty.
In Piracicaba, Brazil, December marks the peak of daylight with a generous 13 hours of sun, perfectly complementing the festive atmosphere of the season. This month mirrors the longer days seen in November, creating a vibrant backdrop for outdoor activities and celebrations. As the year progresses, daylight gradually decreases from the summer peaks in January and February, which each boast 13 and 12 hours, respectively. The transition to shorter days becomes evident in the cooler months of June and July, where daylight dips to just 10 hours. However, as spring approaches, daylight begins to lengthen again, leading to the 11 hours experienced in August through October. Ultimately, December's sunlight sets the stage for joyful gatherings and a thriving outdoor culture, highlighting the cyclical nature of daylight throughout the year.
As December unfolds in Piracicaba, Brazil, the average wind speed reaches 2.7 m/s (6 mph), marking a gentle breeze that complements the warm, festive atmosphere of the holiday season. This wind pattern reflects a noticeable increase from the milder, calm months of January through March, where speeds hover around 2.0 to 2.1 m/s. A gradual rise is observed through the mid-year, peaking in October and November, both recorded at 3.0 m/s (7 mph). The shift to December brings a slight decrease, yet still maintains a refreshing ambiance compared to the earlier months, indicating a dynamic balance between the cooling influence of approaching summer and the lingering warmth of the late year. Overall, December winds gently whisper the transition from year-end festivities to the anticipation of a new beginning, making it a delightful time to be in this vibrant city.
Weather in Piracicaba varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Piracicaba, focusing on differences in temperature, rainfall, humidity, and UV levels.
In comparing the weather of December and January, we notice a slight increase in minimum temperatures, with January starting at 16°C (61°F) compared to December's 14°C (58°F). Both months share the same average temperature of 25°C (78°F), but January typically experiences slightly higher maximum temperatures, reaching up to 39°C (102°F) compared to December's peak of 38°C (100°F). Precipitation also rises significantly in January, with 179 mm (7.1 in) over 17 days, in contrast to December's 112 mm (4.4 in) over 16 days, contributing to an increase in humidity levels from 83% to 88%. For detailed insights on January weather, please visit Piracicaba weather in January.
In comparing the weather between December and February, both months exhibit warm temperatures, but February tends to be slightly hotter. December has a minimum temperature of 14°C (58°F) and can peak at 38°C (100°F), while February sees minimums of 17°C (63°F) and maximums reaching 40°C (104°F). Additionally, February experiences higher precipitation levels at 148 mm (5.8 in), compared to December's 112 mm (4.4 in), though the number of rainy days is similar with 16 days in December and 15 days in February. Humidity is also a bit higher in February, reaching 87% compared to December's 83%. For a detailed look at weather conditions in February, check Piracicaba weather in February.
In December, the weather features a minimum temperature of 14°C (58°F) and an average high of 38°C (100°F), accompanied by substantial precipitation of 112 mm (4.4 in) spread over 16 days, resulting in a humidity level of 83%. In contrast, March shows a slightly warmer minimum temperature of 15°C (59°F) but maintains a similar average high of 38°C (101°F). It experiences less precipitation at 90 mm (3.5 in) across 15 days and a modest increase in humidity at 86%. For a more detailed look at March weather, you can visit Piracicaba weather in March.
December and April showcase distinct weather patterns, although both months experience relatively warm temperatures. In December, the minimum temperature averages around 14°C (58°F), peaking at a maximum of 38°C (100°F) with an average of 25°C (78°F). This month also brings significant rainfall, totaling 112 mm (4.4 in) over 16 days, coupled with high humidity at 83%. In contrast, April sees a slight drop in temperatures, with a minimum of 12°C (53°F) and a maximum of 34°C (94°F), and an average of 23°C (74°F). Precipitation drastically decreases to 43 mm (1.7 in) spread over just 5 days, while humidity remains nearly unchanged at 82%. For those interested in a detailed overview, more information can be found here: Piracicaba weather in April.
December and May present distinct weather characteristics, highlighting the seasonal transitions. In December, temperatures can soar, with a minimum of 14°C (58°F) and highs reaching up to 38°C (100°F), while the average temperature rests at a warm 25°C (78°F). This month also experiences significant rainfall, averaging 112 mm (4.4 in) over 16 days and a high humidity level of 83%, making the air feel quite muggy.
In contrast, May enjoys milder conditions, showcasing a minimum temperature of 6°C (43°F) and a maximum of 34°C (94°F), with an average temperature of 21°C (69°F). Rainfall in May is considerably lighter, totaling 34 mm (1.3 in) over just 4 days, and humidity levels drop slightly to 76%. For a more detailed look at May weather, you can visit Piracicaba weather in May.
In December, the weather is characterized by significantly higher temperatures, with minimums reaching 14°C (58°F) and maximums soaring up to 38°C (100°F), while June offers a cooler climate with minimum temperatures around 8°C (46°F) and maximums peaking at 31°C (89°F). December also experiences more precipitation, averaging 112 mm (4.4 in) over 16 days, compared to June's much drier conditions with only 21 mm (0.8 in) over just 4 days. Additionally, the humidity in December is notably higher at 83%, while June sees a more comfortable average humidity of 71%. For a detailed look at the weather conditions in June, you can refer to Piracicaba weather in June.
When comparing the weather in December and July, there are stark contrasts in temperature, precipitation, and humidity. December experiences much warmer conditions, with average temperatures ranging from a minimum of 14°C (58°F) to a maximum of 38°C (100°F), accompanied by high humidity at 83% and significant precipitation of 112 mm (4.4 in) spread over 16 days. In contrast, July is noticeably cooler, with average temperatures ranging from 2°C (35°F) to 33°C (91°F) and a much lower average humidity of 67%. Remarkably, July boasts nearly clear skies, receiving only 9 mm (0.3 in) of precipitation across no rainy days. For a closer look at July’s weather specifics, check out Piracicaba weather in July.
When comparing the weather in December and August, a stark contrast emerges. December boasts warmer temperatures, with averages ranging from a minimum of 14°C (58°F) to a maximum of 38°C (100°F) and notably high humidity at 83%. In contrast, August experiences cooler conditions, with an average temperature ranging from 6°C (43°F) to a maximum of 35°C (96°F) and significantly lower humidity at 59%. Additionally, December sees a higher amount of rainfall, accumulating 112 mm (4.4 in) over 16 days, compared to August's 47 mm (1.8 in) over just 5 days. For more detailed insights into the climate, visit Piracicaba weather in August.
In December, the weather is generally warmer and more humid compared to September. With minimum temperatures around 14°C (58°F) and maximums reaching up to 38°C (100°F), December experiences an average temperature of 25°C (78°F) coupled with high humidity levels of 83%. In contrast, September has cooler temperatures, with a minimum of 9°C (49°F) and an average of 24°C (75°F). It also tends to be much drier, receiving only 30 mm (1.2 in) of precipitation over about 5 days. For more specific information regarding September weather, you can check Piracicaba weather in September.
In comparing the weather between December and October, December tends to be slightly warmer on average, with temperatures ranging from a minimum of 14°C (58°F) to a maximum of 38°C (100°F), compared to October's range of 13°C (55°F) to 41°C (105°F). However, October experiences slightly higher maximum temperatures, making it the hotter month at its peak. Precipitation in December is notably higher, totaling 112 mm (4.4 in) over 16 days, while October sees 87 mm (3.4 in) across 12 days. Additionally, December has a significantly higher humidity level at 83%, compared to 50% in October, contributing to a more muggy atmosphere in the later month. For a more detailed look at October's weather, you can check Piracicaba weather in October.
In December, the weather is slightly warmer than in November, with average temperatures rising from 24°C (76°F) in November to 25°C (78°F) in December. The minimum temperatures also increase, from 12°C (54°F) in November to 14°C (58°F) in December, while the maximum temperatures remain similar, with December reaching up to 38°C (100°F) compared to November's peak of 38°C (101°F). Precipitation levels are comparable, with December experiencing 112 mm (4.4 in) over 16 days, slightly less than November's 115 mm (4.5 in) over 12 days. Additionally, humidity rises in December to 83%, compared to 74% in November. For more details, visit Piracicaba weather in November.
December in Piracicaba marks the transition into summer, bringing a noticeable shift in weather compared to other months. With higher maximum temperatures peaking at 38°C (100°F) and an average that warms up to 25°C (78°F), this month invites outdoor activities and holiday festivities. However, it also comes with increased humidity at 83% and a higher likelihood of rainfall, contributing to approximately 16 days of precipitation totaling around 112 mm (4.4 in). This combination of heat, moisture, and rain makes December a vibrant yet unpredictable month in Piracicaba’s climate cycle. For a deeper dive into the nuances of weather patterns throughout the year, check out Piracicaba Climate.