May Weather in Fortaleza, Brazil

Last updated: August 21, 2025

Experience the vibrant weather of Fortaleza, Brazil, in May, where temperatures typically range from a warm 24°C (75°F) to a peak of 31°C (88°F), averaging a comfortable 27°C (81°F). This month brings a notable humidity level of 85%, creating a tropical ambiance. However, be prepared for frequent rain, as May records approximately 161 mm (6.3 in) of precipitation over 21 days. Whether basking in sunny moments or embracing the refreshing showers, Fortaleza offers a dynamic climate that showcases the beauty of its coastal charm.

May Temperature in Fortaleza

May in Fortaleza, Brazil, ushers in a warm tropical embrace, with temperatures consistently stable across the month. The minimum temperature hovers around 24°C (75°F), while the average remains a comfortable 27°C (81°F), peaking at a maximum of 31°C (88°F). This pattern mirrors the weather of the preceding months, highlighting a persistent warmth that characterizes the region's climate. As the rainy season draws near, the temperatures continue to reflect a tropical allure, making May an ideal time for beach outings and outdoor adventures. Whether basking in the sun or enjoying evening breezes, visitors can expect a delightful blend of heat and comfort.

May Weather in Fortaleza: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Fortaleza, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Fortaleza, May typically has an average temperature of {2}°C ({3}°F), with highs reaching up to {4}°C ({5}°F) and lows dropping to around {6}°C ({7}°F).
JanFebMarAprMayJunJulAugSepOctNovDec818181818181808081818282
Data source: Temperature data for Fortaleza generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

May Precipitation in Fortaleza

In May, Fortaleza experiences a noticeable reduction in rainfall compared to the preceding months, with an average precipitation of 161 mm (6.3 in) spread across 21 days. While April's downpour of 286 mm (11.2 in) saw the city drenched for nearly a month, May marks a shift towards drier conditions as the region transitions into the colder half of the year. This decrease in precipitation is significant, considering the heavy monthly totals from the earlier rainy season, which peaked in February and March. Furthermore, as June approaches with only 82 mm (3.2 in) expected, this trend of declining rainfall signals a welcome respite from the intense showers, setting the stage for a much drier June ahead.

May Precipitation Trends in Fortaleza

The chart displays monthly precipitation patterns in Fortaleza, with values for each month alongside May’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how May’s conditions compare to those of other months. In Fortaleza, May typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec83211213286161824496111748
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

May Humidity in Fortaleza

In May, Fortaleza, Brazil, experiences a humidity level of 85%, maintaining a consistent trend observed in the preceding months. Following the peak of 87% in March, humidity slightly declines but remains relatively high through the early part of the year. This moderate humidity level signals the transition towards the drier months ahead, with June seeing a further drop to 81%. Overall, May's atmospheric moisture is emblematic of Fortaleza's tropical climate, where the air remains thick and warm, especially following the earlier wet months. As the year progresses, residents and visitors alike can expect a gradual easing of the humidity, leading into the more enjoyable dry season.

May Average Humidity in Fortaleza

This chart illustrates the average monthly humidity levels in Fortaleza, with May’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In May, average humidity in Fortaleza is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%85%87%86%85%81%75%74%74%75%77%81%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Fortaleza

In May, Fortaleza, Brazil, continues to experience a powerful UV Index of 13, categorized as extreme. While this marks a slight decrease from the peak of 15 observed in March and April, precautions are still necessary due to the consistently short burn time of just 10 minutes across the months. This trend of elevated UV levels, particularly from January through May, underscores the region’s need for vigilant sun protection strategies. For more detailed information on UV exposure and safety measures, you can visit Fortaleza UV Index.

Maximum UV Index Levels in Fortaleza for May

The chart shows the monthly maximum UV Index (UVI) for Fortaleza in May, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In May, the maximum UV index in Fortaleza typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec141415151311111213131313
Data source: Fortaleza May UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

May Sunshine in Fortaleza

May in Fortaleza, Brazil, shines brightly as one of the sunniest months of the year, boasting an impressive 323 hours of sunshine. This delightful increase in daylight marks a transition from the previous months, with April providing a solid backdrop of 288 hours, and setting the stage for May's glorious luminosity. Following this peak, the sun's presence continues to illuminate Fortaleza in June and July, with 322 and 339 hours respectively. The trend indicates a burgeoning embrace of sunny days that persist through the months, making Fortaleza a radiant escape for sun seekers. As summer approaches, the city basks in vibrant light, highlighting its allure as a perfect getaway.

Monthly Sunshine Duration in Fortaleza: May Highlighted

The May sunshine duration represents the total number of hours Fortaleza experiences direct sunlight during the month of May, excluding cloudy or obstructed periods. This chart compares the sunshine duration of May with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec268h276h313h288h323h322h339h352h345h361h350h347h
Data source: Fortaleza May Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Fortaleza During May

In Fortaleza, Brazil, the likelihood of sunny weather takes a notable upward turn in May, with approximately 48% chance of sunshine. This increase marks a distinct shift from the previous months, where the chances hover around the lower 30s to low 40s. As the city transitions into the dry season, the month of May sets the stage for even sunnier days ahead, leading into June and July, which boast chances of sun at 65% and 66%, respectively. The trend continues to strengthen through the spring and summer, peaking in the late months with an impressive 75% chance of sun by September. For those seeking brightness in their May plans, Fortaleza undoubtedly offers a promising backdrop as the sunshine begins to dominate the weather.

Percentage of Sunny Days in May in Fortaleza

The chart illustrates the percentage of sunny days in Fortaleza throughout the year, with May highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Fortaleza experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec33%34%27%43%48%65%66%71%75%66%61%42%
Data source: Fortaleza May chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Fortaleza in May

In Fortaleza, Brazil, the daylight duration exhibits a charming consistency, particularly from January through April, where residents enjoy a generous 12 hours of sunlight each day. As May approaches, a slight shift occurs, with daylight tapering to 11 hours. This reduction continues through the cooler months of June, July, and August, creating a cozy ambiance in the city. Interestingly, September marks a return to 12 hours of daylight, a trend that persists until the end of the year. This cyclical pattern reflects the region's tropical climate, ensuring ample sun throughout most of the year while still offering a brief, but noticeable, transition into the darker months.

Average Daylight Hours in Fortaleza for May

The chart illustrates the variation in daylight duration in Fortaleza throughout the year, with May highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec12h 17m12h 12m12h 6m12h11h 55m11h 54m11h 54m11h 58m12h 4m12h 10m12h 16m12h 19m
Data source: Fortaleza daylight hours, calculated by summing the hours between sunrise and sunset for each day.

May Winds in Fortaleza

As May rolls in to Fortaleza, the winds settle at a gentle 4.2 m/s (9 mph), marking a transitional moment in the city's breezy climate. While this speed mirrors the previous month of April, it contrasts with the gustier months to come, particularly July and August, when the winds pick up to an invigorating 5.6 m/s (13 mph) and 6.6 m/s (15 mph), respectively. The trend reveals an evolving rhythm of wind patterns throughout the year, with a gradual increase during the mid-year months, inviting beachgoers and water sports enthusiasts to bask in the refreshing breezes of Fortaleza's coastal charm. As May's moderate winds give way to the lively gusts ahead, this month serves as a serene prelude to the dynamic weather that follows.

Average May Wind Speed in Fortaleza

The chart displays monthly wind speed patterns in Fortaleza, with values for each month shown alongside May's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how May's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec5.54.63.84.24.2 m/s4.85.66.66.56.25.75.6
Data source: Fortaleza May wind data, generated using information from the Copernicus Climate Change Service.

How May Weather in Fortaleza Compares to Other Months

Weather in Fortaleza varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Fortaleza, focusing on differences in temperature, rainfall, humidity, and UV levels.

May and January in Fortaleza offer similar warm temperatures, with minimums around 24°C (75°F) and average highs of 31°C (88°F) in May compared to 32°C (89°F) in January. However, May sees significantly more rainfall, with an average precipitation of 161 mm (6.3 in) over 21 days, whereas January experiences only 83 mm (3.3 in) over 18 days. Humidity levels are also comparable, with May at 85% and January slightly lower at 84%. For more specific details about January weather in Fortaleza, you can visit Fortaleza weather in January.

May and February exhibit similar temperature ranges, with both months experiencing a minimum of 23-24°C (73-75°F), an average of around 27°C (81°F), and a maximum of 31°C (88°F). However, February tends to be slightly wetter, receiving 211 mm (8.3 in) of precipitation across 24 days, compared to May's 161 mm (6.3 in) over 21 days. Both months also share the same high humidity levels, around 85%, contributing to a tropical climate. For more detailed information on February weather, you can visit Fortaleza weather in February.

In both May and March, temperatures in Fortaleza remain consistent, with daily highs averaging around 31°C (88°F) and lows at 24°C (75°F). However, March tends to be wetter, receiving about 213 mm (8.4 in) of rainfall over 29 days, compared to May's 161 mm (6.3 in) over 21 days. Additionally, humidity levels are slightly higher in March at 87%, versus 85% in May. For more detailed information, you can check Fortaleza weather in March.

When comparing the weather in May and April, both months exhibit similar temperature ranges, with minimums of 24°C (75°F), averages of 27°C (81°F), and maximums of 31°C (88°F). However, May experiences significantly less precipitation, with 161 mm (6.3 in) over 21 days, while April sees 286 mm (11.2 in) over 27 days. This results in slightly lower humidity levels in May at 85%, compared to April's 86%. For a more detailed look at April's climate, check out Fortaleza weather in April.

May and June in Fortaleza exhibit similar average temperatures, both hovering around 27°C (81°F), but with subtle differences in extremes. May tends to be warmer with a maximum of 31°C (88°F), while June’s peak reaches 32°C (89°F). Precipitation is significantly higher in May, totaling 161 mm (6.3 in) over 21 days, compared to June's 82 mm (3.2 in) spread over just 13 days, suggesting a drier climate in June. Additionally, humidity levels are slightly lower in June at 81%, compared to May’s 85%. For more details on June’s weather specifics, you can refer to Fortaleza weather in June.

In comparing the weather of May and July, we find some notable differences. May experiences slightly warmer conditions with an average temperature of 27°C (81°F) and peaks reaching 31°C (88°F), while July maintains a similar average at 27°C (80°F) but reaches a maximum of 32°C (89°F). However, May is significantly wetter, with a substantial 161 mm (6.3 in) of rainfall over 21 days, compared to July's much drier climate, receiving only 44 mm (1.7 in) over just 9 days. Additionally, May's humidity level is higher at 85%, while July sees a decrease to 75%. For more detailed insights on July weather, you can visit Fortaleza weather in July.

In May, the weather typically features warmer temperatures with minimums around 24°C (75°F) and maximums reaching up to 31°C (88°F). This month is marked by high humidity levels of 85% and significant rainfall, averaging 161 mm (6.3 in) over 21 days. In contrast, August offers slightly cooler conditions, with minimum temperatures of 23°C (73°F) and maximums peaking at 32°C (90°F). This month is considerably drier, experiencing only about 9 mm (0.4 in) of precipitation over just 3 days, and a reduction in humidity to 74%. For more detailed insights, check Fortaleza weather in August.

May and September in Fortaleza both showcase similar temperature ranges, with minimums around 24°C (75°F), averages of 27°C (81°F), and maximums nearing 31°C (88°F). However, the weather experience dramatically differs between the two months. May is marked by high humidity at 85% and significant rainfall, averaging 161 mm (6.3 in) over 21 days. In contrast, September boasts much drier conditions, with only 6 mm (0.2 in) of precipitation occurring over just one day, and a lower humidity of 74%. This stark difference makes September a more favorable time for outdoor activities. For those interested in a detailed overview of September weather, you can explore Fortaleza weather in September.

When comparing the weather between May and October, we can observe some notable differences. Both months experience similar temperature ranges, with minimums around 24°C (75°F) and maximums reaching 31°C (88°F in May and 89°F in October). However, May is significantly wetter, boasting 161 mm (6.3 in) of precipitation over 21 days, while October sees only 11 mm (0.4 in) of rain on just 2 days. Additionally, humidity levels in May are higher at 85%, compared to October's more comfortable 75%. This makes October a drier and slightly less humid month, ideal for outdoor activities. For more detailed information, you can visit Fortaleza weather in October.

May and November in Fortaleza present contrasting weather experiences. In May, temperatures range from a minimum of 24°C (75°F) to a maximum of 31°C (88°F), with an average of 27°C (81°F). This month is characterized by higher humidity at 85% and significant rainfall, totaling 161 mm (6.3 in) over 21 days. In stark contrast, November enjoys slightly warmer temperatures, with a minimum of 25°C (77°F) and a maximum of 32°C (90°F), while the average remains around 28°C (82°F). The month sees considerably less rain, with only 17 mm (0.7 in) falling over just 4 days, and humidity levels are slightly lower at 77%. For more detailed information about November's climate, visit Fortaleza weather in November.

May and December in Fortaleza display a tropical climate that remains warm throughout the year, but with some notable differences in weather conditions. In May, temperatures range from a minimum of 24°C (75°F) to a maximum of 31°C (88°F), with an average of 27°C (81°F). This month is characterized by high humidity at 85% and significant precipitation, totaling 161 mm (6.3 in) over 21 days. Conversely, in December, the weather is slightly warmer with temperatures ranging from 24°C (76°F) to 31°C (89°F), and an average of 28°C (82°F). However, December has much lower precipitation, amounting to just 48 mm (1.9 in) over 12 days, and a slight decrease in humidity to 81%. For more details on December weather specifics, you can refer to Fortaleza weather in December.

Compare Fortaleza's Climate with Cities Worldwide

Conclusion: What to Expect From May Weather in Fortaleza

In May, Fortaleza experiences a significant shift in climate, characterized by warmer temperatures and increased rainfall compared to other months. With an average temperature hovering around 27°C (81°F), residents and visitors alike feel a humid embrace from the ocean, as humidity levels soar to 85%. This month sees frequent showers, resulting in about 21 rainy days, contributing to a total precipitation of 161 mm (6.3 in). This combination of warmth and moisture creates a lush environment, making May a transition period that prepares the landscape for the vibrant growth of the coming months. For a deeper insight into weather patterns in Fortaleza throughout the year, check out the detailed information at Fortaleza Climate.