Last updated: August 21, 2025
In January, Piracicaba, Brazil, experiences a warm and humid climate, with temperatures soaring to a maximum of 39°C (102°F) and settling at an average of 25°C (78°F). The month brings a notable amount of rainfall, totaling 179 mm (7.1 in) across 17 days, contributing to the region’s lush greenery. With humidity levels averaging 88%, residents and visitors alike can expect a muggy atmosphere that characterizes the Brazilian summer. This combination of heat and moisture makes January a vibrant yet challenging month for outdoor activities in Piracicaba.
In January, Piracicaba, Brazil, experiences a delightful blend of warmth and sunshine, with temperatures typically ranging from a refreshing 16°C (61°F) at night to a blazing 39°C (102°F) during the day. This month showcases a consistent average of 25°C (78°F), making it ideal for outdoor activities and celebrations under the sun. Notably, as the season transitions into February, the heat intensifies slightly, peaking at 40°C (104°F), while the average remains stable at around 25°C (77°F). As the summer progresses, temperatures remain generally high, but a gradual cool down is observed in April, where evenings dip to a comfortable 12°C (53°F). Overall, the month of January sets the tone for a warm summer in Piracicaba, characterized by lively outdoor experiences against the backdrop of vibrant Brazilian culture.
In January, Piracicaba experiences its wettest month, with a substantial precipitation amount of 179 mm (7.1 in) spread over 17 days. This sets the tone for a rainy season that continues into February, albeit with a significant drop to 148 mm (5.8 in). As the months progress, the rainfall steadily decreases, plummeting to just 43 mm (1.7 in) in April, and even lower during the dry winter months of June and July, which see a mere 21 mm (0.8 in) and 9 mm (0.3 in) respectively. By August, precipitation picks up again but remains low at 47 mm (1.8 in), gradually rising in the subsequent months of October and November. This annual cycle reveals Piracicaba's distinct wet and dry seasons, with January standing out as a peak for both rainfall and precipitation days, emphasizing its role as a crucial month for the region's water resources.
In January, Piracicaba experiences its pinnacle of humidity, reaching a notable 88%. This oppressively humid month gives way to a slightly lower 87% in February, followed by a gradual decline to 86% in March. The transition into April marks a more significant drop, with humidity levels falling to 82%. This downward trend continues through May and June, where humidity decreases to 76% and 71%, respectively. By July, the air feels a bit drier at 67%, with August bringing a remarkable dip to 59%. As the year progresses, humidity levels keep dwindling, hitting a low of 50% in October before rising again in November to 74%. December wraps up the year with a return to 83%, showcasing the distinct seasonal shifts in Piracicaba's climate, where the highest humidity predominantly occurs at the start of the year.
In January, Piracicaba experiences an extreme UV Index of 16, with a minimal burn time of just 10 minutes. This trend continues into February, maintaining the same level of intensity, signaling a need for serious sun protection. As the region transitions into March and April, the UV Index remains high at 12 and 11 respectively, yet still falls within the extreme category with the burn time unchanged at 10 minutes. Moving into the latter half of the year, UV levels gradually decrease, with May seeing a drop to 8, categorized as very high, increasing the burn time to 15 minutes. However, the UV Index spikes back up to 11 in September and 14 in November, once again marking those months as extreme, before returning to the peak of 16 in December. These trends underscore the necessity of consistent sun safety measures throughout the year in Piracicaba. For more detailed information, visit Piracicaba UV Index.
UV Risk Categories
In Piracicaba, Brazil, January marks the beginning of a sun-drenched journey, boasting 237 hours of bright sunshine. As the year progresses, the sun shines ever brighter, with February seeing a notable increase to 282 hours. The peak of sunshine arrives in March, where the city basks in an impressive 322 hours. From this high point, the hours gradually decline through the warm months of April and May, settling around the mid-290s. The pattern shifts again in the second half of the year, as July and beyond see robust sunshine returns, showcasing 306 hours in July and an impressive high of 325 hours by December. This trend highlights a vibrant summer, with consistent sunshine that enriches Piracicaba’s landscape throughout the year, making it a radiant spot for sun-seekers.
In Piracicaba, Brazil, January tends to be quite overcast, with only a 15% chance of sunny weather—the lowest percentage for the entire year. As the months progress, the likelihood of clear skies significantly increases, especially in the mid-year months of July and August, boasting chances of 71% and 64%, respectively. This upward trend continues into the early fall, where the sun shines about 62% of the time in September. Conversely, the end of the year sees a dip, particularly in October, where sunny days drop to 29%. Overall, while January may lack brightness, the gradual shift toward sunnier days in the coming months offers a promising outlook for those seeking warmth and sunshine.
In Piracicaba, Brazil, January shines brightly with an impressive 13 hours of daylight, marking it as one of the sunniest months of the year. As the calendar flips to February and March, daylight gently retreats to a steady 12 hours, offering a balance of sunshine and shade. The months of April and May continue this trend, with daylight slipping further to 11 hours. As winter approaches in June and July, daylight reaches its low point at 10 hours, inviting cooler breezes and longer evenings. However, as spring unfolds from August to October, daylight gradually increases back to 12 hours, before the year closes with the return of longer days in November and December, each boasting 13 hours once again. This cyclical pattern not only highlights the vibrant climate of Piracicaba but also creates a rhythm of changing seasons that locals and visitors alike can enjoy.
In January, the wind in Piracicaba gently stirs at an average speed of 2.0 m/s (4 mph), setting a tranquil tone for the month. As the year unfolds, winds gradually pick up, with February seeing a slight increase to 2.1 m/s (5 mph). March, however, brings a subtle dip to 1.8 m/s (4 mph), hinting at a brief lull before a notable surge in April when speeds escalate to 2.6 m/s (6 mph). This upward trend continues through the late winter and early spring months, peaking at an invigorating 3.0 m/s (7 mph) in both October and November. By the end of the year, December welcomes a slight decrease to 2.7 m/s (6 mph), resulting in a dynamic yet smooth seasonal transition that captures the evolving character of Piracicaba's winds.
Weather in Piracicaba varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in Piracicaba, focusing on differences in temperature, rainfall, humidity, and UV levels.
In January, temperatures in Piracicaba range from a minimum of 16°C (61°F) to a maximum of 39°C (102°F), with an average temperature of 25°C (78°F). The month experiences significant rainfall, totaling 179 mm (7.1 in) over 17 days, and humidity levels are high at 88%. In contrast, February sees slightly warmer temperatures, with a minimum of 17°C (63°F) and a maximum of 40°C (104°F), while the average temperature remains stable at 25°C (77°F). Precipitation decreases to 148 mm (5.8 in) over 15 days, and humidity is marginally lower at 87%. For more details on February's weather in Piracicaba, you can check Piracicaba weather in February.
In January, the weather in Piracicaba is characterized by hotter temperatures, with a minimum of 16°C (61°F) and a maximum reaching 39°C (102°F). The month experiences significant rainfall, totaling 179 mm (7.1 in) over 17 days, accompanied by high humidity levels of 88%. In contrast, March sees a slight decrease in temperatures, with minimums of 15°C (59°F) and maximums of 38°C (101°F). Precipitation also drops to 90 mm (3.5 in) across 15 days, and humidity remains relatively stable at 86%. For a detailed look at the weather specifics in March, you can visit Piracicaba weather in March.
In January, the weather is typically much warmer, with temperatures ranging from a minimum of 16°C (61°F) to a maximum of 39°C (102°F) and an average of 25°C (78°F). This month also experiences significant rainfall, totaling 179 mm (7.1 in) over 17 days, alongside high humidity levels at 88%. In contrast, April offers milder conditions, with temperatures peaking at 34°C (94°F) and an average of 23°C (74°F), while the minimum dips to 12°C (53°F). Precipitation decreases drastically to 43 mm (1.7 in) over just 5 days, and humidity is slightly lower at 82%. For more details on April's weather, you can visit Piracicaba weather in April.
When comparing the weather in January and May, there's a stark contrast in both temperature and precipitation patterns. January experiences much warmer temperatures, with highs reaching up to 39°C (102°F) and an average of 25°C (78°F), while May sees cooler conditions, with a maximum of 34°C (94°F) and an average temperature of 21°C (69°F). Additionally, January is much wetter, receiving 179 mm (7.1 in) of precipitation over 17 days, compared to May's mild 34 mm (1.3 in) of rain over just 4 days. Humidity levels also drop significantly from January's high of 88% to May's lower 76%, making May generally more comfortable overall. For a more detailed overview, check out Piracicaba weather in May.
In January, temperatures in Piracicaba are significantly warmer, with a minimum of 16°C (61°F) and an average of 25°C (78°F), peaking at a sweltering 39°C (102°F). This month also experiences considerable rainfall, with 179 mm (7.1 in) spread over 17 days, creating a humid atmosphere with a humidity level of 88%. Conversely, June brings much cooler weather, with minimum temperatures dropping to 8°C (46°F) and an average of 20°C (68°F), while the maximum reaches a comfortable 31°C (89°F). Rainfall is minimal during this month, amounting to just 21 mm (0.8 in) over 4 days and bringing a lower humidity level of 71%. For more detailed insights on the month's weather, you can visit Piracicaba weather in June.
In January, the weather is markedly warmer and more humid compared to July, with temperatures ranging from a minimum of 16°C (61°F) to a scorching maximum of 39°C (102°F). This month also sees significant rainfall, averaging 179 mm (7.1 in) over 17 days, contributing to a high humidity level of 88%. In contrast, July experiences much cooler temperatures, with a minimum of 2°C (35°F) and a maximum of 33°C (91°F). This winter month is characterized by minimal precipitation, with only 9 mm (0.3 in) recorded on average and no rainy days, resulting in a lower humidity of 67%. For a more detailed look at the weather specifics in July, check out Piracicaba weather in July.
When comparing January and August, it’s clear that January is significantly warmer, with temperatures ranging from a minimum of 16°C (61°F) to a scorching maximum of 39°C (102°F) and an average of 25°C (78°F). The humidity is high at 88%, and the month experiences substantial rainfall, with 179 mm (7.1 in) over 17 days. In contrast, August sees much cooler temperatures, with a minimum of 6°C (43°F), an average of 20°C (68°F), and a maximum of 35°C (96°F). The precipitation in August is markedly lower at 47 mm (1.8 in) across just 5 days, and the humidity drops to a more comfortable 59%. For a deeper dive into the August weather in Piracicaba, check out Piracicaba weather in August.
In January, the weather is notably warmer and more humid, with temperatures ranging from a minimum of 16°C (61°F) to a maximum of 39°C (102°F) and an average of 25°C (78°F). This month also experiences significant rainfall, totaling 179 mm (7.1 in) over 17 days, contributing to a high humidity of 88%. In contrast, September presents a cooler climate, with temperatures dropping to a minimum of 9°C (49°F) and an average of 24°C (75°F), peaking at the same maximum of 39°C (102°F). The precipitation is much lower in September, at just 30 mm (1.2 in) over 5 days, and the humidity decreases to 54%, creating a drier atmosphere. For more details, check out Piracicaba weather in September.
When comparing the weather in January and October, January tends to be hotter and more humid. In January, temperatures can reach a maximum of 39°C (102°F), with an average of 25°C (78°F) and a high humidity level of 88%. The month also experiences significant rainfall, averaging 179 mm (7.1 in) over 17 days. In contrast, October offers slightly cooler temperatures, with a maximum of 41°C (105°F) and an average of 24°C (76°F), but with much lower humidity at 50% and reduced precipitation of 87 mm (3.4 in) over 12 days. For more detailed information, you can refer to Piracicaba weather in October.
In January, the weather is notably warmer with minimum temperatures around 16°C (61°F) and maximums reaching up to 39°C (102°F), resulting in a high average of 25°C (78°F). This month experiences significant rainfall, with 179 mm (7.1 in) over 17 days and high humidity levels at 88%. In contrast, November offers slightly cooler temperatures, with a minimum of 12°C (54°F) and a maximum of 38°C (101°F), averaging 24°C (76°F). Precipitation drops to 115 mm (4.5 in) spread over 12 days, and humidity is lower at 74%. For more detailed information on the weather trends, you can check Piracicaba weather in November.
In comparing the weather between January and December, both months exhibit warm temperatures, with average highs reaching around 25°C (78°F). However, January tends to be slightly hotter, with maximum temperatures soaring to 39°C (102°F) compared to December's peak of 38°C (100°F). January also sees more precipitation, accumulating 179 mm (7.1 in) over 17 days, while December records a total of 112 mm (4.4 in) across 16 days. Additionally, January has higher humidity levels at 88%, compared to December's 83%. For a more detailed look into December's weather, you can visit Piracicaba weather in December.
In January, Piracicaba experiences a unique blend of weather, setting it apart from the other months of the year. The sweltering maximum temperatures reach up to 39°C, fostering a warm atmosphere, while the average temperature remains a comfortable 25°C. This month also sees significant rainfall, with nearly half the days experiencing drizzle or downpours, contributing to a high humidity level of 88%. Such climatic conditions create a vibrant yet challenging environment, making January a distinct month in Piracicaba's weather calendar. For a deeper insight into the climate trends, visit Piracicaba Climate.