Last updated: August 21, 2025
May in Itajai, Brazil presents a captivating blend of warm afternoons and cooler evenings. With a maximum temperature soaring to 29°C (84°F) and an average of 19°C (67°F), the climate offers a pleasant escape for visitors and locals alike. However, the month also sees an average minimum temperature of 9°C (49°F), encouraging layers for those chillier moments. Rainfall is notable, with 121 mm (4.8 in) expected over 14 days, contributing to a lush environment. The high humidity level of 86% adds a tropical feel, making Itajai a vivid destination as the month transitions toward winter.
As May rolls in, Itajai, Brazil experiences a notable transition in temperatures, signaling the onset of cooler weather. With minimums dipping to 9°C (49°F), the mildness is a refreshing break from the warmer months preceding it. The average temperature settles around 19°C (67°F), creating a comfortable climate for outdoor activities. Despite the drop in night temperatures, May still enjoys maximums peaking at 29°C (84°F), striking a pleasant balance that invites both sun-worshippers and those seeking refuge from the heat. This month marks a shift towards the cooler winter season, as the city transitions from the sultry summer days of January through April.
In May, Itajai experiences a mild shift in precipitation, with 121 mm (4.8 in) of rain falling over 14 days. This marks a noticeable increase from the previous month, April, which saw only 94 mm (3.7 in) across 15 days. As the year progresses towards winter, May's rainfall reflects a transition, signaling a resurgence of moisture that continues into June with 128 mm (5.1 in) expected. This pattern suggests a tendency for wetter conditions as the region shifts from the drier spells of early autumn, making May a pivotal month for understanding the rainfall dynamics in Itajai.
In Itajai, Brazil, the humidity levels in May remain consistent with the preceding months, measured at a notable 86%. This figure places May among the more humid months, mirroring January and November's levels. A clear trend emerges as the year progresses: humidity tends to peak in the first half of the year, remaining high from January to May, before gradually declining to 80% by July. As the seasons transition into the latter part of the year, humidity levels once again climb, peaking at 88% in December. This pattern of fluctuating humidity embodies the region's tropical climate, creating a rich and inviting atmosphere throughout the year.
In May, Itajai experiences a high UV Index of 7, requiring about 25 minutes of sun exposure before one risks sunburn. This marks a noticeable decline from the extreme levels seen earlier in the year, such as the peak values of 15 in January and February. As autumn sets in, the region transitions to more moderate UV conditions, offering a respite from the intense summer sun, yet caution is still advised. The gradual shift to lower UV readings continues into June, where it drops to 5, indicating a more manageable but still necessary focus on sun safety. For more insights on UV exposure in Itajai throughout the year, visit Itajai UV Index.
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As May settles into Itajaí, Brazil, the sun continues to shine brightly, contributing to the region's delightful climate. With 246 hours of sunshine, May offers a refreshing break from the peak sunshine of earlier months, yet still outshines the subsequent June, which sees a dip to 220 hours. This trend showcases the gradual transition from the sun-drenched summer to the cooler winter months. Following the vibrant sunshine in January and March, which both boast over 290 hours, May reflects a consistent pattern of mild yet gratifying sunlit days that entice locals and visitors alike to enjoy outdoor activities before the year’s end. Overall, the month perfectly captures the essence of Itajaí's inviting atmosphere, framed by the seasonal ebb and flow of sunshine throughout the year.
In May, Itajai, Brazil experiences a notable 48% chance of sunny weather, making it a favorable time for outdoor activities. This month sits just slightly below the higher probabilities seen in February (49%) and April (47%), indicating a steady trend of mildly sunny conditions as the region transitions from the wetter summer months. Following May, the likelihood of sunshine tends to decrease dramatically, plummeting to 34% in June before reaching its peak again during the winter months of July (55%). Overall, May presents a balanced opportunity for sun-seekers, showcasing a promising outlook amid a backdrop of fluctuating weather patterns throughout the year.
In Itajai, Brazil, the duration of daylight exhibits a fascinating seasonal rhythm. January shines brightly with approximately 13 hours of daylight, gradually tapering off to 12 hours by February and March. The days shorten further in April, reaching 11 hours, before dipping to 10 hours in May—the month's darkest point. As we move into June and July, daylight remains consistent at 10 hours, creating a serene atmosphere. August and September see a gentle resurgence in light, with daylight extending back to 11 hours. By October, we return to a more vibrant 12 hours, and as the year winds down, both November and December gift us with 13 hours of sunlight once again. This cyclical pattern not only emphasizes the beauty of Itajai’s climate but also marks the transition of seasons in a spectacular way.
In Itajai, Brazil, the wind patterns in May offer a glimpse into the region's climatological rhythm. With an average wind speed of 2.7 m/s (6 mph), May maintains a consistent breeze, mirroring the calmer conditions seen in February and March. This slightly subdued wind speed sets the stage for a transition into the winter months, where June experiences a gentle uptick to 2.9 m/s (7 mph). As the year progresses into the summer, a notable increase is observed in October, November, and December, each reaching 3.3 m/s (7 mph). Overall, the trend reveals a cooling of winds as autumn begins to settle in, making May a perfectly poised moment in Itajai's yearly cycle.
Weather in Itajai varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Itajai, focusing on differences in temperature, rainfall, humidity, and UV levels.
In comparing the weather between May and January, May features cooler temperatures with a minimum of 9°C (49°F) and an average of 19°C (67°F), while January boasts warmer conditions, starting at a minimum of 19°C (66°F) and averaging 25°C (77°F). January also sees higher maximum temperatures, reaching up to 34°C (93°F), compared to May's maximum of 29°C (84°F). Precipitation is more frequent in January, with 197 mm (7.7 in) and 20 days of rain, compared to May's 121 mm (4.8 in) over 14 days. Despite their differences in temperature and rainfall, both months maintain a high humidity level of 86%. For more specific details about January weather, you can visit Itajai weather in January.
May and February present distinct weather patterns. In May, temperatures range from a minimum of 9°C (49°F) to a maximum of 29°C (84°F), averaging around 19°C (67°F), while February experiences warmer conditions, with minimums of 16°C (61°F) and maximums reaching 34°C (93°F), averaging 24°C (76°F). Precipitation is more frequent in February, with 175 mm (6.9 in) falling over 19 days compared to May's 121 mm (4.8 in) over 14 days. Humidity levels are slightly higher in May at 86%, while February maintains a comfortable 83%. For more details on February weather, you can check Itajai weather in February.
In comparing the weather in May and March, we see notable differences in temperature and precipitation. May experiences a minimum temperature of 9°C (49°F) and an average high of 29°C (84°F), while March is warmer, with a minimum of 18°C (64°F) and an average maximum of 31°C (88°F). March also has higher precipitation levels, totaling 156 mm (6.1 in) over about 22 days, compared to May's 121 mm (4.8 in) over 14 rainy days. Interestingly, both months boast high humidity, with May at 86% and March slightly lower at 85%. For more detailed information on March weather, visit Itajai weather in March.
In comparing the weather of April and May, we see some subtle differences. April maintains a higher minimum temperature of 12°C (55°F) and an average of 21°C (71°F), whereas May starts off cooler with a minimum of 9°C (49°F) and an average of 19°C (67°F). Both months share the same maximum temperature of 29°C (84°F). However, May experiences increased precipitation, with 121 mm (4.8 in) falling over 14 days, compared to April's 94 mm (3.7 in) over 15 days. Humidity remains relatively consistent, with April at 85% and May slightly higher at 86%. For more detailed information about April's weather, you can check out Itajai weather in April.
In comparing the weather between May and June, May generally presents warmer temperatures, with a minimum of 9°C (49°F) and a maximum of 29°C (84°F), while June's temperatures range from a low of 7°C (44°F) to a high of 26°C (80°F). Although June is slightly cooler, it has a similar level of precipitation, totaling 128 mm (5.1 in) over 11 rainy days, compared to May's 121 mm (4.8 in) across 14 days. Humidity remains relatively consistent, with May at 86% and June slightly lower at 85%. For more details, you can check Itajai weather in June.
May and July present quite different weather conditions. In May, temperatures range from a minimum of 9°C (49°F) to a maximum of 29°C (84°F), with an average of 19°C (67°F). The month tends to be quite wet, receiving around 121 mm (4.8 in) of precipitation over 14 days, coupled with high humidity levels of 86%. In contrast, July sees cooler temperatures with a minimum of 4°C (40°F) and a maximum of 27°C (80°F), averaging at 16°C (61°F). Precipitation is significantly lower at 49 mm (1.9 in) over just 7 days, and the humidity drops to 80%. For more details, check out Itajai weather in July.
May and August present distinct weather characteristics. In May, temperatures fluctuate more dramatically, with a minimum of 9°C (49°F) and a maximum of 29°C (84°F), leading to a comfortable average of 19°C (67°F). However, this month also brings significant rainfall, with 121 mm (4.8 in) of precipitation over 14 days and high humidity at 86%. In contrast, August features cooler temperatures, with a minimum of 6°C (43°F) and a maximum of 27°C (80°F), resulting in a slightly lower average of 17°C (62°F). Rainfall decreases to 71 mm (2.8 in) across 10 days, and humidity is more manageable at 79%. For more detailed insights on August weather, you can refer to Itajai weather in August.
May and September exhibit distinct weather patterns, though they share some similarities. In May, temperatures range from a minimum of 9°C (49°F) to a maximum of 29°C (84°F), making it generally warmer on the higher end, with an average temperature of 19°C (67°F). This month typically sees around 121 mm (4.8 in) of precipitation spread over 14 days, resulting in high humidity levels of 86%. In contrast, September experiences slightly cooler temperatures, with a minimum of 10°C (51°F) and a maximum of 26°C (79°F), while the average remains stable at 19°C (66°F). With 109 mm (4.3 in) of rainfall over 13 days, September also has lower humidity at 82%. For a detailed look at the weather nuances in September, you can check Itajai weather in September.
May and October exhibit some notable differences in weather characteristics. In May, temperatures range from a minimum of 9°C (49°F) to a maximum of 29°C (84°F), with an average of 19°C (67°F). This month also sees approximately 121 mm (4.8 in) of precipitation over 14 days, contributing to a high humidity level of 86%. In contrast, October experiences slightly warmer temperatures, with a minimum of 13°C (55°F) and a maximum of 30°C (87°F), averaging around 20°C (68°F). However, it also has higher precipitation, totaling 149 mm (5.9 in) over 18 days, and a lower humidity of 82%. For more details, you can check Itajai weather in October.
May and November present similar weather patterns, yet they showcase distinct characteristics. In May, temperatures range from a minimum of 9°C (49°F) to a maximum of 29°C (84°F), with an average of 19°C (67°F). The month experiences around 121 mm (4.8 in) of precipitation over 14 days, resulting in a high humidity level of 86%. In contrast, November features slightly warmer temperatures, with a low of 13°C (56°F) and an average of 21°C (70°F), peaking at 30°C (86°F). Interestingly, November also sees a similar amount of rainfall at 123 mm (4.8 in), but it occurs over more days, totaling 19. Both months maintain the same humidity level of 86%, creating a consistently humid atmosphere. For more specific insights into November, check Itajai weather in November.
In comparing the weather between May and December, we notice a significant increase in temperatures, with December averaging 23°C (74°F) compared to May's 19°C (67°F). December also sees higher maximum temperatures, reaching up to 31°C (88°F), while May peaks at 29°C (84°F). Precipitation is more pronounced in December, with 175 mm (6.9 in) observed over 21 days, compared to May's 121 mm (4.8 in) over 14 days. Humidity remains relatively high in both months, with December at 88% and May at 86%. For more specific details on December weather, check out Itajai weather in December.
May in Itajaí brings a delightful transition in weather, with milder temperatures compared to the sweltering summer months, creating a comfortable atmosphere for outdoor activities. The average temperature hovers around a pleasant 19°C (67°F), making it ideal for exploring the beautiful surroundings. While the month does see increased precipitation, with approximately 14 rainy days, the lush landscape thrives under the moisture. This higher humidity level (86%) adds a refreshing touch, distinguishing May as a time when nature bursts into life. For a detailed understanding of weather patterns throughout the year, visit Itajai Climate.