Last updated: August 21, 2025
May in Piracicaba, Brazil, presents a delightful climate characterized by warm temperatures and occasional rain. With maximum temperatures reaching 34°C (94°F), the average sits comfortably at 21°C (69°F), while nights can cool down to a refreshing 6°C (43°F). The month sees about 34 mm (1.3 in) of precipitation spread over just 4 days, resulting in a humidity level of 76% that adds to the lush atmosphere. This combination of warmth, moisture, and varied temperatures makes May a vibrant and inviting time to experience the beauty of Piracicaba.
In May, Piracicaba experiences a noticeable transition as temperatures begin to dip. The month starts with a minimum of 6°C (43°F), which is a significant drop from the warmer preceding months, reflecting the arrival of autumn. The average temperature settles at a comfortable 21°C (69°F), providing a pleasant atmosphere for outdoor activities. Although the maximum reaches 34°C (94°F), it signals a shift towards cooler nights and milder days. This blend of daytime warmth and refreshing evenings makes May a delightful time to explore the city's vibrant culture while enjoying the crisp air. Overall, the trends in May indicate a welcome relief from the summer heat, inviting locals and tourists alike to savor the beauty of Piracicaba in this transitional season.
In May, Piracicaba experiences a notable decline in precipitation, recording only 34 mm (1.3 in) of rain over just 4 days. This decrease follows a trend observed since the start of the year, where monthly rainfall sharply declines from 179 mm in January to a significantly lower 43 mm in April. By the time May arrives, the rainy days have dwindled, signaling the onset of the drier winter months ahead. As the city transitions into June, with even lesser rainfall expected at 21 mm (0.8 in), this trend highlights a clear seasonal shift in Piracicaba’s climate, with vibrant landscapes giving way to drier conditions as the year progresses.
In Piracicaba, Brazil, May ushers in a notable shift in humidity, averaging 76%—a refreshing decline from the preceding months. After experiencing high humidity levels of 88% in January and 87% in February, the atmosphere gradually dries out, hitting its peak at 82% in April. This downward trend continues into June with a further decrease to 71%, signaling a transition towards the drier winter months. Interestingly, while humidity consistently drops from February to May, the annual cycle shows a resurgence of moisture as the year nears its end, culminating in a more humid December at 83%. Thus, May serves as a pivotal month where the humid summer gradually gives way to the drier winter, indicating a seasonal rhythm that defines Piracicaba's climate.
In May, Piracicaba experiences a notable shift in its UV Index, which sits at 8, categorizing it as very high and allowing for a slightly extended burn time of 15 minutes. This marks a transition from the extreme UV levels of the earlier months, with January through April consistently peaking at 11 to 16, where the burn time was a mere 10 minutes. As summer approaches, the UV intensity gradually decreases, providing a brief respite before it escalates again in later months. It's essential for residents and visitors to stay vigilant about sun protection during this period. For more details, check out the Piracicaba UV Index.
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May brings a delightful balance of sunshine to Piracicaba, Brazil, with 293 hours of sunlight that foster vibrant outdoor activities and scenic beauty. Following a lively April, which basked in 302 hours of sunshine, May holds steady, hinting at a consistent spring warmth. As the year progresses, daylight hours gradually shift towards winter, with June experiencing a slight dip to 274 hours. However, the sunshine trend remains robust, with previous months showcasing a range between 237 hours in January and a peak of 325 hours in December. This steady availability of sunlight not only brightens the days but also invigorates the spirit of the city, making May a particularly delightful month to enjoy the outdoors in Piracicaba.
May in Piracicaba, Brazil, presents a promising 55% chance of sunny weather, continuing the upward trend from the previous months. As temperatures rise from April’s 57% likelihood, May is nestled comfortably between the mild conditions of early autumn and the more expansive sunny days of winter. The general pattern reveals an interesting progression: starting from January’s meager 15%, the chances of sunshine steadily increase until July, when the likelihood peaks at 71%. This trend indicates that while May may not be the sunniest month, it certainly holds its own, ushering in warmer days and vibrant outdoor opportunities as the region transitions into the cooler months ahead.
In Piracicaba, Brazil, the daylight duration exhibits a captivating seasonal rhythm throughout the year. January begins with a generous 13 hours of daylight, gradually tapering to 12 hours in both February and March. As spring approaches, April and May see a slight reduction to 11 hours, but this is swiftly followed by the shorter days of winter, where both June and July offer only 10 hours. However, as the year progresses, daylight begins to extend once again, reaching 11 hours in August and September, before climbing back to 12 hours in October. The year closes with a flourish as November and December once again bask in 13 hours of sunlight, showcasing the delightful ebb and flow of daylight in this vibrant region.
In May, Piracicaba experiences a gentle breeze with an average wind speed of 2.2 m/s (5 mph), contributing to the mild and pleasant atmosphere of the month. This slight increase from April's 2.6 m/s marks a transitional phase as the winds begin to calm down slightly in early winter. Following a peak in wind activity during the late winter months of August and September, where speeds reach 2.9 m/s (6 mph), May’s moderate conditions make it ideal for outdoor activities. The overall trend reveals a consistent pattern of increasing wind speeds through the tail-end of winter, gradually leveling off as the year progresses, suggesting that May serves as a bridge between the breezy early months and the calmer mid-year period.
Weather in Piracicaba varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Piracicaba, focusing on differences in temperature, rainfall, humidity, and UV levels.
May and January exhibit distinctly different weather patterns. In May, temperatures range from a mild minimum of 6°C (43°F) to a warm maximum of 34°C (94°F), with an average of 21°C (69°F). This month sees relatively low precipitation at 34 mm (1.3 in) over just four days, accompanied by a humidity level of 76%. In contrast, January experiences warmer temperatures, with a minimum of 16°C (61°F) and a maximum soaring to 39°C (102°F), resulting in an average of 25°C (78°F). However, it also brings significantly more rainfall, totaling 179 mm (7.1 in) over 17 days, while humidity rises to 88%. For a closer look at January's climate specifics, you can explore Piracicaba weather in January.
May and February present contrasting weather patterns, showcasing the transition between a cooler early year and the onset of warmer late spring. In May, temperatures range from a minimum of 6°C (43°F) to a maximum of 34°C (94°F), with an average of 21°C (69°F) and relatively low humidity at 76%. In contrast, February boasts warmer conditions, with a minimum temperature of 17°C (63°F), an average of 25°C (77°F), and a peak reaching up to 40°C (104°F). However, February is considerably wetter, receiving 148 mm (5.8 in) of precipitation over 15 days, compared to May's 34 mm (1.3 in) over just 4 days. For more in-depth insights on February weather, check out Piracicaba weather in February.
In comparing the weather of March and May, it’s clear that March tends to be warmer, with temperatures averaging 25°C (78°F) and reaching highs of 38°C (101°F). In contrast, May has a lower average temperature of 21°C (69°F) and peaks at 34°C (94°F). Additionally, March experiences significantly higher precipitation, with 90 mm (3.5 in) over approximately 15 days, while May sees just 34 mm (1.3 in) across 4 days. Humidity levels are slightly higher in March at 86%, compared to May's 76%. For more detailed information about March weather, you can check this link: Piracicaba weather in March.
Comparing the weather between April and May reveals some interesting variations. In May, the temperatures range from a minimum of 6°C (43°F) to an average of 21°C (69°F) and can peak at 34°C (94°F). This month experiences slightly lower precipitation, totaling 34 mm (1.3 in) over about 4 days, with humidity averaging 76%. In contrast, April boasts a higher minimum temperature of 12°C (53°F) and an average of 23°C (74°F), with similar maximum temperatures reaching 34°C (94°F). However, April sees more rainfall, with 43 mm (1.7 in) over 5 days and greater humidity at 82%. For more detailed insights about April weather patterns, check out the following link: Piracicaba weather in April.
In comparing the weather between May and June, May generally offers warmer temperatures with a minimum of 6°C (43°F) and an average high of 34°C (94°F), while June sees slightly cooler temperatures with a minimum of 8°C (46°F) and a maximum of 31°C (89°F). The overall average temperature in May is also higher at 21°C (69°F) compared to June's 20°C (68°F). Additionally, May experiences more precipitation at 34 mm (1.3 in) over 4 days, while June has less, with only 21 mm (0.8 in) of rain over the same number of days. Humidity levels are higher in May at 76%, contrasting with June's lower humidity of 71%. For more detailed information, you can check out Piracicaba weather in June.
In comparing the weather of May and July, May tends to be warmer with an average temperature of 21°C (69°F) and maximums reaching up to 34°C (94°F), whereas July's average temperature drops slightly to 19°C (67°F) with a maximum of 33°C (91°F). Additionally, May experiences considerably more precipitation, totaling 34 mm (1.3 in) over four days, while July sees minimal rain at only 9 mm (0.3 in) and no rainy days at all. Humidity levels are also higher in May at 76%, compared to July's more comfortable 67%. For those interested in July's specific weather conditions, you can find more details here: Piracicaba weather in July.
In May, the weather presents a warm average temperature of 21°C (69°F), with noticeable variations, ranging from a minimum of 6°C (43°F) to a maximum of 34°C (94°F). This month sees relatively low precipitation at 34 mm (1.3 in) over just 4 days, along with higher humidity levels of 76%. In contrast, August experiences a slightly cooler average of 20°C (68°F) but boasts a higher maximum temperature of 35°C (96°F). Precipitation increases to 47 mm (1.8 in) over 5 days, and humidity drops significantly to 59%. For a detailed look at the weather specifics in August, check out Piracicaba weather in August.
In comparing the weather between May and September, May tends to be slightly cooler, with average temperatures ranging from a minimum of 6°C (43°F) to a maximum of 34°C (94°F), while September enjoys warmer averages, ranging from a minimum of 9°C (49°F) to a maximum of 39°C (102°F). May also experiences higher humidity at 76%, compared to September's 54%. Precipitation levels are relatively similar, with May receiving 34 mm (1.3 in) over 4 days, while September sees about 30 mm (1.2 in) over 5 days. For a more detailed look at September weather, you can visit Piracicaba weather in September.
In May, the weather tends to be milder, with average temperatures ranging from a minimum of 6°C (43°F) to a maximum of 34°C (94°F) and a relatively low average humidity of 76%. Rainfall is minimal, with only 34 mm (1.3 in) recorded over about 4 days, offering a pleasant experience for outdoor activities. In contrast, October sees warmer conditions, featuring an average temperature between 13°C (55°F) and a maximum of 41°C (105°F). However, this month is considerably wetter, with 87 mm (3.4 in) of precipitation spread over 12 days and a lower humidity level of 50%. For more detailed information, you can check Piracicaba weather in October.
When comparing the weather in May and November, it's clear that November tends to be warmer and wetter. In May, temperatures range from a minimum of 6°C (43°F) to a maximum of 34°C (94°F), while November sees a higher minimum at 12°C (54°F) and can peak at 38°C (101°F). Additionally, November experiences significantly more rainfall, with 115 mm (4.5 in) of precipitation over 12 days compared to May's 34 mm (1.3 in) over just 4 days. Humidity levels are relatively similar, with May at 76% and November slightly lower at 74%. For more detailed information about November weather, you can visit this link: Piracicaba weather in November.
May and December present contrasting weather conditions. In May, temperatures range from a minimum of 6°C (43°F) to a maximum of 34°C (94°F), with an average temperature of 21°C (69°F). The month experiences relatively low precipitation, totaling 34 mm (1.3 in) over just four days, and humidity stands at 76%. In contrast, December boasts warmer temperatures, with a minimum of 14°C (58°F), an average of 25°C (78°F), and a peak of 38°C (100°F). This month sees significantly higher rainfall, accumulating 112 mm (4.4 in) across 16 days, and a slight increase in humidity at 83%. For more detailed information, check out Piracicaba weather in December.
As May rolls in, Piracicaba's weather offers a delightful transition into the cooler months. With average temperatures around a comfortable 21°C, the city enjoys a pleasant reprieve from the summer heat, where maximums can soar to 34°C. While there's a noticeable dip in temperatures, especially at night, May also sees an increase in humidity, creating a unique blend of warmth and freshness. Rainfall is relatively minimal, typically gracing the area for just a few days, making it an ideal time to explore the beauty of Piracicaba. For more insights into the climate patterns throughout the year, check out Piracicaba Climate.