Last updated: August 21, 2025
In May, Parnaiba, Brazil experiences warm and humid weather, with daily maximum temperatures reaching up to 33°C (92°F) and an average of 27°C (82°F). Nights are pleasantly mild, dipping to a minimum of 23°C (74°F). Rainfall is a significant feature this month, with a total precipitation of 184 mm (7.2 in) spread across approximately 18 days, contributing to the region's lush landscapes. The high humidity, averaging around 87%, creates a tropical atmosphere that characterizes this vibrant coastal city.
In May, Parnaíba, Brazil, experiences a delightful climate that perfectly captures the essence of late autumn. With a minimum temperature of 23°C (74°F), the days remain comfortably warm, while the average temperature holds steady at 27°C (82°F), providing an inviting atmosphere for outdoor activities. The maximum temperature reaches around 33°C (92°F), similar to the preceding months, yet noticeably cooler than the upcoming winter months. As the transition into June approaches, the region maintains its tropical charm, with relatively consistent temperatures throughout the season, making May an ideal time to explore Parnaíba's stunning landscapes and vibrant culture.
In May, Parnaíba experiences a noticeable drop in precipitation, receiving 184 mm (7.2 in) over 18 days of rain, marking a significant decrease from the heavier rains of the earlier months. After consistently high rainfall in March (308 mm) and April (293 mm), May's showers provide a brief respite, yet still contribute to the region's lush landscape. As the wet season begins to wane, this month serves as a transition period, hinting towards the drier months ahead. With precipitation sharply tapering off into June, where only 39 mm (1.5 in) is recorded over just 6 days, it's evident that the heavier rains of the season are diminishing, paving the way for a more arid climate in the coming months.
In May, humidity in Parnaiba, Brazil remains relatively high at 87%, slightly dropping from the peak of 90% reached in April. This trend reflects the region's unique climate, characterized by a gradual decrease in humidity from the start of the year. After enduring the more humid months of January through April, locals can look forward to slightly drier conditions as the year progresses. Following May, June brings a notable decline to 77%, further reducing to 62% by July. This seasonal transition not only marks a shift in humidity levels but also indicates the onset of the drier winter months ahead. Overall, while May retains considerable moisture, it signals the beginning of a more moderate climate that defines Parnaiba's seasonal rhythm.
In May, Parnaiba, Brazil, continues to experience an extreme UV Index of 13, necessitating caution for sun exposure with a burn time of just 10 minutes. This month marks a slight dip from the earlier months, yet the consistent trend of high UV levels persists from January through April, where indices reached as high as 16. Even as the index slightly lowers in June at 12, the extreme category remains dominant throughout the year, emphasizing the importance of sun protection for both locals and visitors alike. For a deeper understanding of UV conditions, you can check out the detailed Parnaiba UV Index.
UV Risk Categories
In Parnaíba, Brazil, the month of May heralds the onset of abundant sunshine, boasting an impressive 315 hours of sun—a delightful invitation to outdoor adventures and vibrant beach days. This upward trend in daylight continues into June and July, where sunshine peaks at 328 and 346 hours, respectively. The gradual increase from early in the year, with January starting at 255 hours, illustrates a warm transition towards the heart of the year's sunniest months. May, therefore, not only stands out as a brightly lit month but also acts as a prelude to the sun-drenched days ahead, making it a perfect time for travelers to bask in the warmth of Parnaíba.
In Parnaíba, Brazil, the likelihood of enjoying sunny weather increases notably as the year progresses. Starting from a modest 22% chance in January, a gradual rise occurs through the spring months, culminating in 42% by May—making it a promising time for sun-seekers. This upward trend continues into the winter, with sunny days peaking at 68% in August and maintaining a healthy outlook through the following months. Thus, May stands out as a delightful transition month where the potential for sunny days significantly enhances the charm of this coastal destination.
In Parnaiba, Brazil, the rhythm of daylight is remarkably consistent throughout the year, with January through April offering a generous 12 hours of daylight each day. However, as May arrives, a subtle shift occurs, reducing daylight to 11 hours, a trend that persists into June and July. This slight dip marks the onset of winter in the Southern Hemisphere, where longer nights invite cooler temperatures. As spring approaches in August, daylight rebounds to 12 hours, re-establishing the balance until December, when Parnaiba basks in ample daylight once again. This cyclical pattern not only enhances the region's natural beauty but also influences the lifestyle and activities of its residents.
In Parnaiba, Brazil, the wind patterns throughout the year tell an intriguing story of seasonal change. As May rolls in, average wind speeds dip to 2.7 m/s (6 mph), showcasing the calm before the more boisterous months ahead. This month marks a noticeable shift from the breezier April, where winds reached 3.4 m/s (8 mph). Following May, the trend picks back up, with wind speeds gradually increasing through the colder months, peaking in September and October at an energetic 5.6 m/s (13 mph). The transitional nature of Parnaiba's winds highlights a blend of tranquility and vigor, inviting both relaxation and adventure as the seasons change.
Weather in Parnaiba varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Parnaiba, focusing on differences in temperature, rainfall, humidity, and UV levels.
May and January offer distinct weather patterns, despite exhibiting similar minimum temperatures of 23°C (74°F). In January, the average temperature rises slightly to 28°C (82°F), peaking at a maximum of 35°C (96°F). In contrast, May has a slightly cooler average of 27°C (82°F) with highs reaching 33°C (92°F). Additionally, January experiences less precipitation, totaling 121 mm (4.8 in) over 20 days, compared to May's 184 mm (7.2 in) across 18 days. Both months maintain high humidity levels at 87%. For a closer look at January's conditions, check out Parnaiba weather in January.
When comparing the weather in May and February, both months exhibit warm temperatures with averages hovering around 27°C (81°F) to 27°C (82°F). However, February tends to be slightly hotter, with a maximum temperature reaching up to 34°C (94°F) compared to May's maximum of 33°C (92°F). Precipitation levels in February are also notably higher at 279 mm (11.0 in) over 25 days, compared to May's 184 mm (7.2 in) across 18 days. Additionally, humidity levels remain quite similar, with February's humidity at 88% and May's at 87%, making both months feel quite tropical. For more detailed information, you can refer to Parnaiba weather in February.
In comparing the weather of May and March, both months showcase similar average temperatures, with highs reaching up to 33°C (92°F) and lows around 22-23°C (73-74°F). However, May tends to be slightly less humid at 87% compared to March's 89%, offering a marginally more comfortable atmosphere. Rainfall is also notably lower in May, with 184 mm (7.2 in) over 18 days, while March experiences increased precipitation of 308 mm (12.1 in) across 30 days, making it a wetter month overall. For more details on March conditions, you can visit Parnaiba weather in March.
In comparing the weather of April and May, both months exhibit warm temperatures with minimums around 23°C (74°F) and average highs that are quite similar. However, May tends to be slightly cooler on average with a max temperature of 33°C (92°F) compared to April's peak of 34°C (93°F). Precipitation is significantly lower in May, with 184 mm (7.2 inches) over 18 days, while April experiences much higher rainfall of 293 mm (11.5 inches) across 25 days. Humidity also remains high in both months, with May at 87% and April slightly higher at 90%. For more detailed insights into April's weather, check out Parnaiba weather in April.
May and June exhibit notable differences in weather patterns. In May, temperatures range from a minimum of 23°C (74°F) to a maximum of 33°C (92°F), with an average of 27°C (82°F). This month experiences significant rainfall, totaling 184 mm (7.2 in) over 18 days, coupled with high humidity levels at 87%. In contrast, June sees a slight increase in average temperature to 28°C (82°F) and a peak at 35°C (95°F), but it enjoys much drier conditions, with only 39 mm (1.5 in) of rainfall spread over just 6 days. The humidity also decreases to 77%, making June a generally warmer and less damp month compared to May. For more details on June weather, visit Parnaiba weather in June.
The weather in May is characterized by higher humidity and significantly more rainfall, with an average temperature of 27°C (82°F) and precipitation totaling 184 mm (7.2 in) over 18 days. In contrast, July experiences a slightly warmer average temperature of 28°C (83°F) with minimal rainfall, accumulating just 31 mm (1.2 in) over only 3 days, and lower humidity at 62%. This makes July a drier and more comfortable month compared to the more humid and wet conditions of May. For more details, check out Parnaiba weather in July.
In May, temperatures in Parnaíba range from a minimum of 23°C (74°F) to a maximum of 33°C (92°F), with an average of 27°C (82°F). This month experiences significant rainfall, totaling 184 mm (7.2 in) over 18 days, resulting in high humidity levels at 87%. In contrast, August sees slightly cooler temperatures, with a minimum of 22°C (71°F) and a maximum of 36°C (98°F), while the average rises to 28°C (84°F). The weather in August is notably drier, with only 3 mm (0.1 in) of precipitation recorded over 0 rainy days, leading to much lower humidity at 54%. For more detailed information, you can check Parnaiba weather in August.
In May, the weather features a minimum temperature of 23°C (74°F) and an average of 27°C (82°F), with highs reaching 33°C (92°F). However, this month is also characterized by a significant amount of rainfall, totaling 184 mm (7.2 in) over 18 days, and a high humidity level of 87%. In contrast, September sees a rise in average temperature to 29°C (84°F), peaking at a scorching 36°C (97°F) while enjoying virtually no precipitation, recorded at just 2 mm (0.1 in) across zero rainy days. The humidity also drops significantly to 55%, creating a much drier climate. For more detailed information, you can check out Parnaiba weather in September.
In May, temperatures in Parnaiba range from a minimum of 23°C (74°F) to a maximum of 33°C (92°F), with an average of 27°C (82°F). The month is characterized by higher humidity at 87% and significant rainfall, totaling 184 mm (7.2 in) over approximately 18 days. In contrast, October features warmer temperatures with a minimum of 24°C (75°F) and a maximum soaring to 37°C (99°F), averaging around 29°C (84°F). The month is markedly drier, with only 7 mm (0.3 in) of precipitation occurring over just 1 day, and lower humidity at 58%. For more details, check this link: Parnaiba weather in October.
In comparing the weather between May and November, we notice distinct differences in temperature and precipitation. May experiences a milder temperature range with averages between 23°C (74°F) and 33°C (92°F), accompanied by significant rainfall of 184 mm (7.2 in) over 18 days, resulting in high humidity levels at 87%. In contrast, November sees slightly warmer temperatures, with minimums at 24°C (75°F) and maximums soaring to 37°C (98°F), while only receiving 20 mm (0.8 in) of precipitation across just 4 days, leading to a decrease in humidity to 62%. For more detailed insights, check out Parnaiba weather in November.
May and December in Parnaiba showcase distinct differences in weather patterns. In May, temperatures range from a minimum of 23°C (74°F) to a maximum of 33°C (92°F), with an average of 27°C (82°F) and considerable rainfall totaling 184 mm (7.2 in) over 18 days, accompanied by high humidity at 87%. In contrast, December features slightly higher temperatures, with a minimum of 24°C (75°F) and a maximum of 36°C (97°F), and an average of 29°C (84°F). Rainfall during this month is significantly lower, with only 57 mm (2.2 in) occurring across just 10 days, alongside a drop in humidity to 74%. For more details on what to expect during December, you can check Parnaiba weather in December.
May in Parnaíba marks a transition into the wet season, characterized by higher humidity levels and increased rainfall compared to other months. With an average temperature around 27°C, days feel warm, yet the frequent downpours can bring refreshing relief. As 18 days of precipitation contribute to a notable total, residents and visitors often experience lush landscapes and vibrant scenery. While the warm maximum temperatures linger, the padding of wet days sets May apart, creating an atmosphere that is both humid and lively. To explore more about the weather patterns throughout the year, check out Parnaiba Climate.