Last updated: August 21, 2025
In May, Rosario, Argentina experiences a notable transition as autumn settles in. With maximum temperatures reaching 28°C (83°F) and an average of 14°C (58°F), the climate offers a refreshing respite from the heat. However, nights can dip to a brisk minimum of -1°C (30°F), reminding residents of the cooler season ahead. During this month, the city receives around 71 mm (2.8 in) of precipitation over just 6 rainy days, leading to an average humidity level of 82% that can feel quite pronounced. These atmospheric conditions create a vibrant environment, making May an intriguing time for both locals and visitors to experience Rosario's unique autumn charm.
In May, temperatures in Rosario, Argentina showcase a marked transition as autumn sets in. With a chilly minimum of -1°C (30°F), the coolness becomes more pronounced, especially compared to the warmer months preceding it. The average temperature hovers around 14°C (58°F), offering a comfortable respite from the soaring highs of summer. On pleasant days, you can experience a delightful maximum of 28°C (83°F), hinting at occasional warmth amidst the crisp air. This juxtaposition of cooler nights and mild days indicates a shift towards winter, with the landscape gradually shedding its vibrant summer colors in preparation for the colder months ahead.
In May, Rosario, Argentina experiences a moderate precipitation level with 71 mm (2.8 in) of rainfall over approximately 6 days. This represents a slight decrease compared to the preceding months, particularly April, which averaged 131 mm (5.2 in). As the city transitions towards winter, May’s weather showcases those characteristic cool, damp days reminiscent of late autumn. The precipitation in May is part of a broader trend where monthly rainfall begins to taper off, with June reaching its driest point at just 29 mm (1.1 in). This gradual decline underscores the seasonal shift, paving the way for the drier months ahead while still offering a refreshing respite from the preceding rainfall.
May in Rosario, Argentina marks a significant increase in humidity, reaching a notable 82%. This rise is part of a broader trend, as the city experiences a steady climb in moisture levels from January's moderate 48% to April's 76%. The transition into late autumn brings about a heightened sense of dampness, creating a lush atmosphere before the cooler winter months. Following May, humidity begins to decline, dropping to 77% in June and further decreasing in the subsequent months. Overall, May not only exemplifies the peak of humidity in the year but also highlights the seasonal shift in Rosario's climatology, as nature prepares for the winter transition.
In May, Rosario, Argentina experiences a noticeable shift in its UV Index, dropping to a moderate level of 5, which allows for increased outdoor enjoyment with a burn time of 30 minutes. This change follows the extreme levels seen in the earlier months of January through March, where UV Index readings reached a staggering 14, necessitating a mere 10 minutes of exposure before sunburn could occur. As the season transitions into cooler weather, the risk diminishes, reflecting a trend towards safer sun exposure. By the end of May, residents and visitors can savor the sun with more confidence, compared to the intense UV rays of previous months. For more details on UV conditions throughout the year, check out Rosario UV Index.
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As May unfolds in Rosario, Argentina, the days begin to shorten, with 231 hours of sunshine gracing the city—a slight dip from the vibrant 294 hours enjoyed in January. This month typically serves as a transition from the warmer summer days to the cooler winter months, mirroring the trend of diminishing sunlight that begins in April. The sunshine hours in May stand out amidst a backdrop of seasonal change, suggesting an inviting ambiance despite the decrease. While June and July follow with even less sunlight, with 222 and 227 hours respectively, May holds its own as a gentle reminder of the more radiant days, fostering a unique blend of warmth and the anticipation of winter's approach.
In Rosario, Argentina, the likelihood of sunny weather in May holds steady at 60%, reflecting a trend of varied sunshine throughout the year. Interestingly, as temperatures start to drop following the warm summer months, the probability of clear skies begins to fluctuate. After a peak in April at 68%, May's sunshine chances slightly decrease yet remain consistent with January. Notably, the summer months of July and August experience the highest likelihood of sun, at 74% and 78% respectively, while late spring and fall months, such as March and June, see a dip, with sunny days being less frequent. This trend highlights May as a transitional month, offering a balanced mix of sunny and cloudy days, ideal for outdoor activities amidst the shifting seasons.
As spring transitions into winter in Rosario, Argentina, May marks a notable shift in daylight hours, offering around 10 hours of natural light—a gradual reduction from the 11 hours seen in April. This decrease in sunlight continues until June, reaching its annual minimum of 9 hours. However, daylight begins to rebound as July brings back 10 hours, setting the stage for longer days ahead. The cycle of daylight demonstrates a clear seasonal rhythm: from 14 hours in the height of summer to the darker winter months, the varying lengths of day and night create a dynamic backdrop for life in this vibrant city.
In May, Rosario experiences a gentle breeze with an average wind speed of 3.1 m/s (7 mph), a slight increase from the preceding months of April and March. This consistent airflow marks a transitional phase as the region shifts from the milder winds of autumn to the more spirited gusts that will come with winter. As we look ahead to June and July, wind speeds remain stable at 3.1 m/s and 3.3 m/s, respectively, suggesting a steady atmosphere that can enhance outdoor activities. Overall, May’s winds bring an invigorating freshness, paving the way for the cooler months ahead while maintaining a charming balance typical of this season.
Weather in Rosario varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Rosario, focusing on differences in temperature, rainfall, humidity, and UV levels.
In comparing the weather of May and January, notable differences emerge. May experiences cooler temperatures, with a minimum of -1°C (30°F) and an average of 14°C (58°F), reaching a maximum of 28°C (83°F), while January boasts a much warmer range, starting at 11°C (53°F) and peaking at 41°C (105°F), with an average of 25°C (77°F). Precipitation is more prevalent in January, totaling 105 mm (4.1 in) over 7 days, compared to May's 71 mm (2.8 in) distributed across 6 days. Additionally, May's humidity level is significantly higher at 82%, whereas January enjoys a much drier feel with 48% humidity. For more details on January weather, you can visit Rosario weather in January.
May and February exhibit contrasting weather patterns, reflecting the transition from spring to summer. In May, temperatures range from a chilly minimum of -1°C (30°F) to a comfortable average of 14°C (58°F), with highs reaching 28°C (83°F). The month experiences 71 mm (2.8 in) of precipitation over approximately 6 days, accompanied by a high humidity level of 82%. Conversely, February presents warmer conditions, with a minimum of 9°C (48°F), an average of 24°C (75°F), and maximum temperatures soaring to 36°C (98°F). Although it has slightly less rainfall at 63 mm (2.5 in) across 7 days, the humidity is notably lower at 55%. For more details about February's climate, you can refer to Rosario weather in February.
When comparing the weather in May and March, distinct differences emerge. May features a cooler temperature range, with a minimum of -1°C (30°F) and an average of 14°C (58°F), whereas March boasts milder temperatures, starting at a minimum of 7°C (44°F) and averaging 21°C (71°F). Interestingly, March can reach much higher maximum temperatures, soaring up to 35°C (95°F), compared to May's high of 28°C (83°F). Precipitation is slightly more prevalent in March, with 93 mm (3.6 in) over 6 days, compared to May's 71 mm (2.8 in) over the same number of days. Additionally, humidity levels are higher in May at 82%, while March enjoys a lower humidity of 64%. For more details on the weather in March, check out Rosario weather in March.
The weather in May shows a significant range with temperatures varying from a chilly minimum of -1°C (30°F) to a warm maximum of 28°C (83°F), resulting in an average temperature of 14°C (58°F). In contrast, April is generally warmer, with minimum temperatures at 3°C (37°F) and maximums reaching 33°C (91°F), averaging 19°C (66°F). Additionally, April experiences more precipitation, totaling 131 mm (5.2 in) over 7 days, compared to May's 71 mm (2.8 in) across just 6 days. The humidity is slightly higher in May at 82%, compared to April's 76%. For a closer look at April's weather patterns, you can visit Rosario weather in April.
May and June present notably different weather patterns. In May, temperatures range from a minimum of -1°C (30°F) to a maximum of 28°C (83°F), with an average temperature of 14°C (58°F). This month experiences a higher precipitation level of 71 mm (2.8 in) over 6 days and maintains a humidity of 82%. In contrast, June has slightly cooler temperatures, with a minimum of -2°C (28°F), an average of 12°C (53°F), and a maximum of 26°C (79°F). Additionally, June sees significantly less precipitation at 29 mm (1.1 in) over just 3 days and a lower humidity of 77%. For further details on June weather specifics, visit Rosario weather in June.
May and July exhibit distinct differences in weather patterns. May experiences a wider temperature range, with a minimum of -1°C (30°F), an average of 14°C (58°F), and a maximum of 28°C (83°F). In contrast, July sees a lower minimum temperature of -4°C (24°F) and a slightly cooler average of 11°C (52°F), while the maximum temperature is close at 27°C (80°F). Precipitation in May is higher, totaling 71 mm (2.8 in) over six days, compared to July's 29 mm (1.2 in) over the same number of days. Additionally, May has a higher humidity level at 82%, while July's humidity drops to 62%. For more information, you can check out Rosario weather in July.
In May, the weather varies significantly, with temperatures ranging from a chilly -1°C (30°F) at night to a mild 28°C (83°F) during the day, and an average temperature of 14°C (58°F). This month also sees relatively high humidity levels at 82% and around 71 mm (2.8 in) of precipitation over six days. In contrast, August experiences slightly cooler temperatures, with minimums of -2°C (29°F) and maximums reaching 31°C (88°F), resulting in an average of 13°C (55°F). August is drier, with only 35 mm (1.4 in) of rain falling over just four days and a lower humidity level of 59%. For more detailed information, visit Rosario weather in August.
May and September showcase notable differences in weather patterns. In May, temperatures range from a chilly -1°C (30°F) to a comfortable maximum of 28°C (83°F), with an average of 14°C (58°F). This month experiences more humidity at 82% and receives around 71 mm (2.8 inches) of precipitation over six days. In contrast, September features slightly warmer conditions, with temperatures varying between -1°C (31°F) and a high of 33°C (92°F), leading to an average of 16°C (60°F). With lower humidity at 62% and less rainfall at 58 mm (2.3 inches) also over six days, September offers a drier and warmer climate compared to May. For more detailed weather information, check out Rosario weather in September.
May and October present contrasting weather patterns, showcasing the transition from spring to fall. In May, temperatures range from a chilly minimum of -1°C (30°F) to a pleasant maximum of 28°C (83°F), with an average of 14°C (58°F). The month sees around 71 mm (2.8 in) of precipitation over 6 days, accompanied by high humidity levels at 82%. In contrast, October boasts milder temperatures with a minimum of 4°C (40°F) and a maximum that can reach as high as 37°C (100°F), averaging 18°C (65°F). Precipitation in October is slightly lower at 63 mm (2.5 in) over 8 days, and the humidity drops significantly to 52%. This makes October notably drier and warmer than May. For more detailed insights, explore Rosario weather in October.
May and November present contrasting weather patterns. In May, temperatures range widely, with a minimum of -1°C (30°F) and a maximum of 28°C (83°F), leading to an average of 14°C (58°F). The month experiences about 71 mm (2.8 in) of precipitation over 6 days, accompanied by relatively high humidity at 82%. In contrast, November showcases warmer temperatures, with a minimum of 7°C (45°F) and a maximum soaring to 37°C (98°F), averaging at 22°C (71°F). Although November sees slightly more precipitation at 81 mm (3.2 in) over the same number of days, the humidity drops to a more comfortable 56%. For more details on November weather, you can visit Rosario weather in November.
In May, the weather in Rosario features a wider temperature range with a minimum of -1°C (30°F) and an average of 14°C (58°F), peaking at a maximum of 28°C (83°F). This month experiences 71 mm (2.8 in) of precipitation over six days, accompanied by relatively high humidity at 82%. In contrast, December brings warmer temperatures, with a minimum of 10°C (50°F), an average of 24°C (75°F), and maximums reaching up to 38°C (100°F). Precipitation is slightly lower at 69 mm (2.7 in) but occurs over eight days, and humidity drops to 51%. For more details on December weather, visit Rosario weather in December.
May in Rosario marks a transitional period as the days gradually turn cooler. With a maximum temperature of 28°C (83°F) and an average hovering around 14°C (58°F), it's a month where warmth still lingers but is accompanied by more chilly evenings. The increased humidity at 82% adds a touch of discomfort, especially on the occasional rainy days, tallying 71 mm (2.8 in) of precipitation over 6 days. This blend of warmth and moisture sets May apart from the hotter summer months, forging a unique atmosphere that invites locals and visitors alike to enjoy the last bursts of autumn before the winter chill sets in. For more insights on Rosario's weather patterns, visit Rosario Climate.