Last updated: August 21, 2025
In May, Petrolina, Brazil experiences a warm yet inviting climate, characterized by maximum temperatures reaching up to 38°C (100°F) and an average temperature of 27°C (80°F). Nighttime brings a gentle coolness with lows around 19°C (66°F), making evenings pleasant. While visitors can expect only 13 mm (0.5 in) of rainfall over a mere 2 days, the high humidity level of 84% adds a tropical touch to the atmosphere. This month strikes a perfect balance for those looking to enjoy both the sun and cool breezes of this vibrant region.
In Petrolina, Brazil during May, temperatures begin to hint at the transition towards the cooler months. With a minimum of 19°C (66°F), the nights are pleasantly mild, while the average temperature settles at a comfortable 27°C (80°F). Days can still feel quite warm, with maximums reaching up to 38°C (100°F), echoing the lingering summer energy of earlier months. Notably, this slight dip in the minimum temperature marks a shift from the consistently higher readings of previous months, suggesting that while warmth still dominates, the city is gradually welcoming the gentle embrace of autumn. This blend of both warmth and cooler evenings makes May a particularly enjoyable month for visitors and locals alike.
May in Petrolina, Brazil, marks a notable decline in precipitation, with just 13 mm (0.5 in) of rain reported over only 2 days. This sharp drop follows a wetter April with 40 mm (1.6 in) across 7 days, highlighting a transition into the drier months ahead. As the year progresses into the winter season, June sees an even further reduction to 7 mm (0.3 in), indicating a clear trend towards significantly lower rainfall. The transition from the relatively damp early months to the arid late-year conditions paints a vivid picture of Petrolina's distinct climate patterns, underscoring its resilience against the elements.
In Petrolina, Brazil, May brings a noticeable decline in humidity, dropping to 84% from the peak values seen in earlier months. After a gradual increase from January's 86% to March's highs of 92%, humidity levels begin to ease in April and continue their downward trend into the following months. This decrease signals the onset of drier conditions that will dominate the region through the winter months, with humidity falling to 76% in June and further down to 62% by August. The transition through May, characterized by this moderation, offers a glimpse of the relief from the intense moisture that defines the earlier part of the year.
In Petrolina, Brazil, the UV Index in May stands at a remarkable 12, categorizing it as extreme and maintaining the trend seen in previous months. This level of UV exposure, with a burn time of just 10 minutes, signals that sun safety is essential. Notably, while May's UV Index is slightly lower than January, March, and November—each hitting 15—it remains significantly high, typical of the region's sun intensity throughout the year. The months leading up to May consistently exhibit extreme UV levels, illustrating the need for vigilant sun protection during this time. For more insights on UV exposure and safety tips, visit Petrolina UV Index.
UV Risk Categories
May in Petrolina, Brazil, enjoys a delightful 295 hours of sunshine, continuing the trend of bright days that characterize the region. Following a vibrant March, which boasted the year's highest sunshine tally at 334 hours, May maintains a solid position, mirroring the previous month's abundant light. As the year progresses towards June's slight dip to 275 hours, the consistent sunshine in April and May underscores a generally sun-kissed climate. This trend speaks to the charm of Petrolina's weather, enticing visitors and locals alike to relish the warm, sunny days that provide a perfect backdrop for outdoor activities and leisurely gatherings. With October showcasing a peak of 350 hours, the sun-soaked months that include May set the stage for an engaging and vibrant atmosphere throughout the year.
In Petrolina, Brazil, the month of May presents a significant opportunity for sunny weather, boasting a 44% chance of sun. This figure is notably higher than January and February, which dip to 34% and 31%, respectively. As spring begins to unfold, May shows a promising trend toward sunnier days compared to the preceding months of April (33%) and even rivals March's 45%. Following May, the likelihood of sunny weather soars in June with 61%, indicating that the region transitions into a sunnier spell as summer approaches. Overall, May strikes a balance, offering a considerable chance for delightful sunshine as the year progresses.
In Petrolina, Brazil, the rhythm of daylight plays a captivating role throughout the year. From January to April, residents enjoy a consistent 12 hours of daylight, creating a vibrant atmosphere perfect for outdoor activities. As the cooler months approach, from May to August, daylight dips slightly to 11 hours, signaling the arrival of autumn. However, this brief reduction doesn’t dampen spirits; it's part of the natural ebb and flow of the seasons. As spring approaches in September, daylight reverts to 12 hours once again, restoring that sun-kissed energy and setting the stage for a lively end to the year, with October through December also basking in the same 12-hour glow. This cyclical pattern not only defines daily life but also enhances the appreciation for the sun’s presence across Petrolina's picturesque landscape.
In Petrolina, Brazil, the month of May marks a delightful uptick in average wind speed, reaching 5.0 m/s (11 mph). This increase reflects a broader trend of escalating winds as the year progresses, with a gradual rise noticeable from the typically calmer months of January and February. As the region transitions into the winter months, wind speeds continue their upward trajectory, peaking in August at 6.1 m/s (14 mph). This pattern not only enhances the natural beauty of Petrolina's landscapes but also presents ideal conditions for outdoor activities. As the year unfolds, May serves as a pivotal moment, heralding an invigorating breeze that invites both locals and visitors to embrace the refreshing climate.
Weather in Petrolina varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Petrolina, focusing on differences in temperature, rainfall, humidity, and UV levels.
May and January both feature warm temperatures, but there are notable differences in their weather patterns. In January, the minimum temperature is slightly higher at 21°C (70°F), with an average of 29°C (84°F), compared to May's minimum of 19°C (66°F) and average of 27°C (80°F). Both months can reach a maximum of 38°C (100°F), but January tends to have more precipitation, averaging 26 mm (1.0 in) over 4 days, while May sees significantly less, with only 13 mm (0.5 in) over 2 days. Additionally, humidity levels are comparable, with January at 86% and May at 84%. For more details about the January weather in Petrolina, visit Petrolina weather in January.
May and February exhibit some notable differences in weather patterns, even though both months can reach high temperatures. In May, the temperatures range from a minimum of 19°C (66°F) to a maximum of 38°C (100°F), with an average of 27°C (80°F). Precipitation is considerably lower in May, totaling just 13 mm (0.5 in) over 2 days, and the humidity is around 84%. In contrast, February experiences slightly warmer temperatures, with a minimum of 21°C (70°F) and an average of 28°C (83°F), reaching the same maximum of 38°C (100°F). However, it sees much more precipitation, accumulating 69 mm (2.7 in) over 10 days, along with increased humidity at 90%. For more detailed insights, you can visit Petrolina weather in February.
In comparing the weather between March and May, we see some notable differences. March typically experiences slightly higher minimum temperatures at 21°C (70°F), while May's temperatures begin at a lower minimum of 19°C (66°F). Both months can reach a maximum of 38°C (100°F), and they share a similar average temperature of around 28°C (83°F) in March and 27°C (80°F) in May. However, March is significantly wetter, receiving 59 mm (2.3 in) of precipitation over 9 days, compared to May's much drier conditions with only 13 mm (0.5 in) of precipitation over just 2 days. Additionally, humidity levels are higher in March at 92%, while May sees a slight decrease to 84%. For more detailed information, you can check out Petrolina weather in March.
In comparing the weather between April and May, we notice some key differences. April experiences slightly higher minimum temperatures averaging 21°C (70°F) and maximum temperatures reaching 37°C (98°F), while May's temperatures range from a minimum of 19°C (66°F) to a maximum of 38°C (100°F). Precipitation also varies significantly; April has 40 mm (1.6 in) spread over 7 days, in contrast to May's much lighter rainfall of just 13 mm (0.5 in) over 2 days. Additionally, humidity levels are slightly lower in May at 84%, compared to 90% in April, contributing to a more comfortable feel as the month progresses. For further details on April weather patterns, you can check Petrolina weather in April.
In May, temperatures in Petrolina range from a minimum of 19°C (66°F) to a maximum of 38°C (100°F), with an average temperature of 27°C (80°F). This month experiences relatively high humidity at 84% and receives about 13 mm (0.5 in) of precipitation over 2 days. In contrast, June sees a slight decrease in temperatures, with a minimum of 18°C (64°F), an average of 25°C (78°F), and a maximum of 35°C (95°F). Additionally, June is drier, with only 7 mm (0.3 in) of precipitation falling over just 1 day, and humidity drops to 76%. For more detailed insights, you can check Petrolina weather in June.
May and July present contrasting weather patterns. In May, temperatures range from a minimum of 19°C (66°F) to a maximum of 38°C (100°F), with an average temperature of 27°C (80°F). The month experiences higher humidity at 84% and sees about 13 mm (0.5 in) of precipitation over two days. Conversely, July offers slightly cooler temperatures, with a minimum of 17°C (64°F) and a maximum of 35°C (96°F), averaging 25°C (76°F). This month is notably drier, with only 6 mm (0.2 in) of precipitation recorded on no rainy days, and the humidity decreases to 68%. For more details on July weather, you can check Petrolina weather in July.
In May, the weather tends to be warmer and more humid, with temperatures ranging from a minimum of 19°C (66°F) to a maximum of 38°C (100°F) and an average of 27°C (80°F). The month sees some precipitation, with around 13 mm (0.5 in) of rain over 2 days and humidity levels at a high 84%. In contrast, August is slightly cooler, featuring temperatures from a low of 17°C (63°F) to a high of 36°C (97°F), with an average of 25°C (78°F). Notably, August experiences very little rainfall, with just 4 mm (0.1 in) and no rainy days, along with a more comfortable humidity level of 62%. For more details, check out Petrolina weather in August.
May and September share similar minimum temperatures, both starting at around 19°C (66°F), but September boasts a slightly higher maximum temperature, reaching up to 39°C (103°F). Both months have an average temperature close to 27°C (81°F), yet May experiences more humidity at 84%, contrasted with September's drier climate at 56%. Additionally, rainfall in May is considerably higher, with 13 mm over two days, while September remains almost entirely dry with just 3 mm of precipitation recorded on no days. For more details on the weather in this region during September, you can check Petrolina weather in September.
May and October weather in Petrolina presents some notable similarities and differences. In both months, the maximum temperatures can reach up to 38°C (100°F in May and 102°F in October), indicating a consistent heat during the transition from spring to fall. However, October has a slightly higher average temperature at 29°C (84°F) compared to May's 27°C (80°F).
Additionally, while the humidity in May remains high at 84%, it drops significantly in October to 51%, making October feel less muggy. Precipitation remains minimal in both months, with each experiencing about 12-13 mm of rain over just two days. For more details about the weather specifics in October, you can refer to Petrolina weather in October.
In May, temperatures in Petrolina typically range from a minimum of 19°C (66°F) to a maximum of 38°C (100°F), with an average temperature of 27°C (80°F). The month sees relatively low precipitation, with only about 13 mm (0.5 in) over approximately 2 days, while humidity levels remain high at 84%. In contrast, November experiences slightly warmer temperatures, with a minimum of 21°C (69°F) and a maximum of 39°C (103°F), averaging 29°C (84°F). Rainfall increases to 21 mm (0.8 in) over about 4 days, and humidity drops significantly to 44%. For more detailed information, you can visit Petrolina weather in November.
May and December in Petrolina present distinct weather patterns. In May, temperatures range from a minimum of 19°C (66°F) to a maximum of 38°C (100°F), with an average of 27°C (80°F). The month sees relatively low precipitation, totaling just 13 mm (0.5 in) over about 2 days, coupled with high humidity at 84%. In contrast, December experiences slightly higher temperatures, with a minimum of 21°C (70°F) and a maximum of 39°C (103°F), averaging 29°C (84°F). However, it also brings increased rainfall, totaling 41 mm (1.6 in) over about 5 days, and a drop in humidity to 59%. For more detailed insights, you can check Petrolina weather in December.
As May unfolds in Petrolina, the weather offers a delightful contrast to the hotter months preceding it. With an average temperature of 27°C (80°F), the warmth is tempered by relatively low precipitation, adding a gentle touch to the otherwise dry atmosphere. This month sees an increase in humidity, averaging 84%, which may make days feel a bit more muggy, but the brief rainy spells are refreshing, occurring on just 2 days. Overall, May provides a sweet transition period, where the sun still shines brightly while hints of moisture hint at the coming changes in the season. For a deeper dive into how Petrolina's weather trends shift throughout the year, check out Petrolina Climate.