Last updated: August 21, 2025
In May, Buenos Aires transitions into the brisk embrace of autumn, showcasing a maximum temperature of 25°C (77°F) and an average of 15°C (59°F). The city experiences a notable minimum of 4°C (39°F), making warm layers essential for the cooler evenings. This month is characterized by moderate rainfall totaling 80 mm (3.2 in) over approximately 7 days, creating a refreshing ambiance amidst the city's vibrant culture. With humidity levels reaching 85%, May in Buenos Aires offers a cozy atmosphere perfect for exploring its charming streets and local delights.
In May, Buenos Aires welcomes the arrival of cooler temperatures as autumn sets in. The month typically starts with minimums around 4°C (39°F), gradually rising to a comfortable average of 15°C (59°F). The days can still warm up, peaking at 25°C (77°F), but there's a noticeable shift from the summer heat that characterizes the earlier months. This transitional weather makes May a perfect time to explore the city's vibrant culture and picturesque parks, while enjoying the crisp air. As the city cools down, it offers a refreshing break from the sweltering temperatures of January and February, signaling the beginning of a milder season ahead.
In May, Buenos Aires experiences a noteworthy precipitation pattern, showcasing a total of 80 mm (3.2 in) of rainfall over approximately 7 days. This level of rainfall continues the trend from April, where the city received 82 mm, indicating consistent moisture in the lead-up to the cooler winter months. While May's precipitation is slightly lower than April’s, it remains significant, contributing to the lush landscapes that characterize this time of year. The overall pattern reveals a gradual increase in rainfall from the beginning of the year, peaking in October with 103 mm. As the city transitions into winter, maintaining this level of precipitation proves crucial for the local ecosystem, ensuring that despite the cooling temperatures, nature remains vibrant and thriving.
May marks a significant peak in humidity for Buenos Aires, with levels soaring to 85%. This month reflects a continued trend of increasing moisture, beginning in January with a more comfortable 50% and gradually climbing to 80% by April. As the city transitions into winter, June sees a slight drop back to 80%, but May clearly stands out as the month of highest humidity. This trend not only highlights the lush vibrancy of the late autumn season but also prepares residents and visitors alike for the cozy, sometimes muggy days that characterize May in this vibrant Argentine capital.
In Buenos Aires, the UV Index in May stands at a thoughtful 5, categorized as moderate. This marks a notable reduction from the intense levels experienced in the peak of summer—where January and February hit extremes of 14 and 13, respectively, with rapid burn times of just 10 minutes. As the seasons transition, April begins to hint at lower sun exposure with an index of 7, allowing for a safer outdoor experience as burn times increase to 25 minutes. By May, a UV index of 5 provides a balanced opportunity for sun lovers, allowing for a burn time of 30 minutes while still necessitating sensible sun protection during midday hours. As the year progresses into winter, the index continues to decline, suggesting a more forgiving sun. For more details on the yearly trends, check out the Buenos Aires UV Index.
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In Buenos Aires, May heralds the beginning of a cooler season, with an average of 232 hours of sunshine to enjoy. Though this marks a decline from the sun-drenched days of summer, which bathe the city in 299 hours in January and peak at 383 hours in December, May still offers a charming selection of bright, vibrant days. As autumn sets in, the sunshine begins to wane, mirroring the gradual drop in light seen from April's 259 hours. Notably, this trend continues into winter, where June and July see the least sunlight. However, the drop in hours adds a unique allure to Buenos Aires, inviting locals and visitors alike to enjoy the city's culture and warm atmosphere even as the days grow shorter. So, while May might not boast the sunniest days, it still holds the promise of lovely moments in the City of Fury.
In Buenos Aires, the likelihood of sunny weather in May is approximately 58%, which places it slightly below the peak of April at 68% but still comfortably above the cooler months that follow. This trend reflects a transitional phase as the city moves from the warmth of summer into the cooler fall, with the chances of sunshine fluctuating throughout the year. The summer months of January and February boast the highest sun probabilities at 60%, while June drops to 44%, highlighting the seasonal shift. As the weather cools, October emerges as a bright spot again with a significant 69% chance of sunshine, indicating that Buenos Aires can still bask in sunlight even as winter approaches. Overall, while May may not be as sunny as some other months, it still offers a respectable chance for clear skies, inviting locals and tourists alike to enjoy the vibrant onset of autumn.
As the calendar turns to May in Buenos Aires, daylight begins to wane, ushering in a period of shorter days. With 10 hours of sunlight, May marks the peak of this decline, following an abundance of 14 hours in January. As autumn sets in, the gradual reduction in daylight becomes a defining feature of the season, contrasting with the bright, long days of summer. After May, daylight continues to shorten, hitting its lowest point in June with only 9 hours, before gradually increasing again into the spring. This rhythmic ebb and flow of daylight not only influences the city's activities but also reflects the natural cycle of change, making the transition into winter a poignant time for reflection and adaptation.
In May, Buenos Aires experiences a delightful resurgence in wind speed, averaging 4.6 m/s (10 mph), a slight increase from the transitional April breezes. This gentle draft precedes the brisk winds of winter, with June following closely at 4.5 m/s (10 mph). An intriguing trend emerges as we look to the months ahead; July sees a notable uptick, reaching 4.9 m/s (11 mph), while September boasts the strongest gusts at 5.4 m/s (12 mph), heralding a shift to more invigorating weather. As the year progresses, November continues this pattern with another peak of 5.3 m/s (12 mph), welcoming warmer winds that signal the arrival of spring. Thus, May serves as a pivotal bridge, where the winds are neither too strong nor too gentle, making it a perfect time to enjoy the city’s vibrant outdoor life.
Weather in Buenos Aires varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Buenos Aires, focusing on differences in temperature, rainfall, humidity, and UV levels.
In comparing the weather of May and January, notable differences emerge in both temperature and humidity levels. May experiences milder temperatures, with a range from a minimum of 4°C (39°F) to a maximum of 25°C (77°F), while January boasts a much warmer climate, with temperatures ranging from 14°C (58°F) to a scorching 37°C (99°F). Although May sees higher humidity levels at 85%, January features a more comfortable humidity of 50%. Precipitation is also varied, with May receiving a total of 80 mm (3.2 in) over 7 days compared to January's 59 mm (2.3 in) over 6 days. For more detailed information on January weather, you can visit Buenos Aires weather in January.
When comparing the weather in May and February, notable differences emerge. May typically sees cooler temperatures, with nighttime lows around 4°C (39°F) and average highs reaching 15°C (59°F), while February boasts warmer conditions, with minimum temperatures of 13°C (55°F) and average highs soaring to 23°C (75°F). Additionally, February experiences a higher maximum temperature of 33°C (92°F), making it feel quite hot compared to the more moderate May. Precipitation levels are slightly higher in May, with 80 mm (3.2 in) over 7 days, while February has 72 mm (2.9 in) across 8 days. Humidity is also higher in May at 85%, compared to February's 61%. For a closer look at February's climate details, check out Buenos Aires weather in February.
In comparing the weather of May and March, we see distinct differences in temperature and humidity. May features a more temperate climate with average temperatures ranging from a minimum of 4°C (39°F) to a maximum of 25°C (77°F), whereas March offers warmer conditions with temperatures peaking at an average of 32°C (89°F). Precipitation levels are similar, with May receiving 80 mm (3.2 in) across 7 days and March slightly lower at 77 mm (3.0 in) over 8 days. Additionally, May's humidity is significantly higher at 85%, making it feel more muggy compared to March's 66%. For more information, you can visit Buenos Aires weather in March.
May weather in Buenos Aires shows a broader temperature range, with minimums dipping to 4°C (39°F) and maximums reaching 25°C (77°F), compared to April’s generally warmer temperatures, which range from a minimum of 6°C (44°F) to a maximum of 29°C (84°F). While both months experience similar levels of precipitation, with May recording 80 mm (3.2 in) over 7 days and April slightly higher at 82 mm (3.2 in) over 8 days, May tends to be a bit more humid with an average humidity of 85%, compared to April's 80%. For more details on April's weather, check Buenos Aires weather in April.
In comparing the weather between May and June, May typically boasts slightly warmer temperatures, with a minimum of 4°C (39°F) and an average of 15°C (59°F), peaking at 25°C (77°F). During this month, precipitation averages 80 mm (3.2 in) over 7 days, accompanied by a high humidity level of 85%. In contrast, June experiences cooler conditions, with temperatures ranging from a minimum of 1°C (35°F) to an average of 12°C (54°F) and a maximum of 23°C (74°F). June also sees a decrease in precipitation to 66 mm (2.6 in) but has one additional rainy day compared to May, resulting in a humidity level of 80%. For a more detailed look at June's weather, visit Buenos Aires weather in June.
In comparing the weather of May and July, May typically experiences milder temperatures, with an average of 15°C (59°F) and maximums reaching up to 25°C (77°F). In contrast, July tends to be cooler, with an average of 11°C (52°F) and maximum temperatures peaking at 23°C (74°F). While both months have a similar amount of precipitation, May has slightly higher rainfall at 80 mm (3.2 in) compared to July’s 75 mm (3.0 in), albeit over more days—seven in May versus eight in July. Additionally, the humidity levels are higher in May at 85%, while July enjoys a dryer atmosphere with a humidity level of 69%. For more detailed information, you can visit Buenos Aires weather in July.
May and August present contrasting yet mild weather conditions. In May, temperatures range from a minimum of 4°C (39°F) to a maximum of 25°C (77°F), with an average around 15°C (59°F). This month receives about 80 mm (3.2 in) of rainfall over approximately 7 days, coupled with high humidity at 85%, creating a lush and damp atmosphere.
In comparison, August sees slightly cooler temperatures, with a minimum of 2°C (36°F) and a maximum of 24°C (75°F), averaging 12°C (55°F). Precipitation decreases to 51 mm (2.0 in) over 5 days, and humidity drops to 66%, resulting in drier and crisper days. For more details about the conditions in August, you can check out Buenos Aires weather in August.
May and September both feature mild temperatures, with averages around 15°C (59°F). However, May tends to be slightly warmer with a maximum temperature of 25°C (77°F), compared to September’s peak of 27°C (81°F). While both months experience similar humidity levels—85% in May and a lower 72% in September—May sees more rainy days (7) and slightly less precipitation at 80 mm (3.2 in) compared to September's 86 mm (3.4 in) over 6 days. For more details on September weather, check out Buenos Aires weather in September.
May and October present distinct weather patterns as spring transitions into autumn in Buenos Aires. In May, temperatures range from a cool 4°C (39°F) at night to a warm 25°C (77°F) during the day, with an average of 15°C (59°F). This month experiences 80 mm (3.2 in) of precipitation over about 7 days, combined with high humidity at 85%. In contrast, October boasts milder nighttime lows at 7°C (45°F) and daytime highs reaching up to 30°C (87°F), with an average temperature of 17°C (63°F). October also sees slightly higher rainfall, totaling 103 mm (4.1 in) across approximately 10 days, but with lower humidity at 63%. For more detailed information, check out Buenos Aires weather in October.
May and November present distinct weather contrasts that define this transitional period. In May, temperatures range from a cooler minimum of 4°C (39°F) to an average of 15°C (59°F) and can peak at 25°C (77°F). With 80 mm (3.2 in) of precipitation over about 7 days, it is also characterized by high humidity at 85%. In contrast, November experiences a warmer climate, with minimum temperatures of 9°C (49°F) and averages around 21°C (69°F), peaking at a maximum of 33°C (91°F). The precipitation in November drops slightly to 77 mm (3.0 in) over 8 days, and humidity is significantly lower at 59%. For more detailed insights, you can check Buenos Aires weather in November.
May and December in Buenos Aires present distinctly different weather patterns. In May, temperatures range from a minimum of 4°C (39°F) to a maximum of 25°C (77°F), with an average of 15°C (59°F). The month experiences relatively high humidity at 85% and sees about 80 mm (3.2 in) of precipitation over 7 days. In contrast, December boasts warmer temperatures, with a minimum of 10°C (50°F) and a maximum reaching 34°C (94°F), along with a comfortable average of 23°C (73°F). Precipitation decreases to 66 mm (2.6 in), also spread over 7 days, but humidity drops to 56%, making it feel significantly drier. For a more detailed look at the December climate, check out Buenos Aires weather in December.
As May unfolds in Buenos Aires, the city experiences a refreshing shift from the warmth of summer to the cooler embrace of autumn. With an average temperature around 15°C (59°F), days are pleasantly mild, offering a perfect balance for outdoor activities while evenings take on a brisk charm. Unlike the bustling summer months, precipitation becomes more frequent, with an average 80 mm falling over about 7 days, contributing to the lush greenery that characterizes this time of year. The increased humidity, typically around 85%, adds a unique layer to the atmosphere, making May a vibrant transition into winter. For more insights on this captivating city’s climate, visit Buenos Aires Climate.