May Weather in Mendoza, Argentina

Last updated: August 21, 2025

Mendoza, Argentina in May offers a delightful blend of mild temperatures and refreshing breezes, making it an ideal time for outdoor explorations. With a maximum temperature reaching 26°C (80°F) and an average temperature of 12°C (55°F), visitors can enjoy comfortable days and cool evenings. However, nights can dip as low as 1°C (34°F), so be sure to pack accordingly! The month also sees a modest precipitation amount of 31 mm (1.2 in) over approximately 5 days, contributing to the region's lush landscapes. Coupled with a humidity level of 69%, May presents a charming, vibrant atmosphere, perfect for indulging in Mendoza’s renowned wine culture and scenic vistas.

May Temperature in Mendoza

As May unfolds in Mendoza, Argentina, the region experiences a notable shift in temperatures, heralding the transition to cooler months. The average temperature settles at 12°C (55°F), with daily highs peaking at a mild 26°C (80°F), offering a comfortable respite from the sweltering summer. Meanwhile, nights grow cooler, dipping to a brisk 1°C (34°F), hinting at the approaching winter chill. This month serves as a bridge between the warmth of summer and the crispness of winter, showcasing a distinct drop from April's milder 18°C (64°F) average, while still enjoying significantly warmer days compared to the subsequent chilly June. Nature begins to shift as the landscapes transform, making May a captivating time for visitors to experience Mendoza’s seasonal charm.

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

The chart illustrates May temperature patterns in Mendoza, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Mendoza, 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).
JanFebMarAprMayJunJulAugSepOctNovDec797571645448475359657277
Data source: Temperature data for Mendoza 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 Mendoza

In May, Mendoza experiences a moderate precipitation level, depositing 31 mm (1.2 in) of rain over the course of 5 days. This marks a slight decrease from the wetter months of April and March, yet maintains a rhythm typical of early autumn in the region. As the dry season approaches, May's rainfall serves as a crucial transition, providing nourishment to the vineyards and landscapes that define this picturesque area. With the skies gradually drying, the overall trend shows a decrease in precipitation from the peak of summer, leading into the drier winter months of June and July, where rainfall amounts plunge significantly. This seasonal pattern underscores Mendoza's unique climatic appeal, blending both verdant springs and sunlit drier periods.

May Precipitation Trends in Mendoza

The chart displays monthly precipitation patterns in Mendoza, 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 Mendoza, May typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec274434373115101014263126
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Mendoza

In May, Mendoza, Argentina experiences a noticeable rise in humidity, reaching 69%, which is the highest level recorded for the month. This increase is part of a broader trend seen from January through April, where humidity gradually climbed from a comfortable 40% to a more pronounced 65%. As spring approaches and the transition toward winter begins, the air retains more moisture, resulting in the elevated humidity levels of May. Following this peak, a slight decrease occurs in June, hinting at a shift toward drier winter months. Thus, May serves as a pivotal point in Mendoza’s climatic cycle, showcasing a blend of lingering spring warmth and the impending chill of winter.

May Average Humidity in Mendoza

This chart illustrates the average monthly humidity levels in Mendoza, 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 Mendoza is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec40%46%54%65%69%64%65%60%51%49%44%36%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Mendoza

In May, Mendoza, Argentina experiences a noticeable decrease in UV intensity compared to the sizzling summer months. With a UV Index of 6, categorized as high, the potential for sunburn begins to decrease, allowing for a more comfortable outdoor experience. The burn time extends to 25 minutes, giving sun-seekers longer windows to enjoy the beautiful surroundings without the relentless urgency of more extreme months. This shift marks a significant transition as the region heads into the cooler winter months, with June reflecting a further decline in both UV levels and burn time. For more insights and detailed information, check out Mendoza UV Index.

Maximum UV Index Levels in Mendoza for May

The chart shows the monthly maximum UV Index (UVI) for Mendoza 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 Mendoza typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec151412864569121415
Data source: Mendoza 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 Mendoza

May in Mendoza, Argentina, offers a remarkable transition as the vibrant summer months give way to the cooler autumn season. With an average of 271 hours of sunshine, May experiences a dip compared to the preceding months, but the sunlight remains plentiful. This trend of decreasing daylight continues into June, solidifying May as a bridge between warmer January's blistering 313 hours and the crisper 265 hours of June. Despite the reduction, May still provides more sunshine than many other parts of the world, allowing visitors to enjoy the beauty of Mendoza's landscapes under a warm sun. As the year progresses, one can't help but anticipate the longer days of spring that follow, making May a perfect time to experience the enchanting ambiance of this picturesque region.

Monthly Sunshine Duration in Mendoza: May Highlighted

The May sunshine duration represents the total number of hours Mendoza 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.
JanFebMarAprMayJunJulAugSepOctNovDec313h327h336h284h271h265h281h313h322h358h372h397h
Data source: Mendoza May Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Mendoza During May

In Mendoza, Argentina, the likelihood of sunny weather in May stands at a 63% chance, reflecting a consistent trend of enjoyable, sunny days typical for this time of year. Although May experiences a slight dip from the 71% in April, it remains on par with nearby months like February and June, where the chances hover around the same range. This pattern showcases Mendoza's charm as it transitions from autumn into the cooler months, maintaining a pleasant climate for outdoor activities and exploration. Notably, the following months, particularly July, boast an impressive 87% sunshine probability, indicating that if you miss the sun in May, you won’t have to wait long for its return.

Percentage of Sunny Days in May in Mendoza

The chart illustrates the percentage of sunny days in Mendoza 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 Mendoza experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec70%63%59%71%63%64%87%78%82%77%76%64%
Data source: Mendoza May chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Mendoza in May

As the heart of autumn settles in Mendoza, Argentina, May ushers in a notable shift in daylight duration, offering just 10 hours of sunlight. Following the long and vibrant days of summer, the transition into May heralds shorter days, which peak in April with 11 hours. This gradual decline in daylight continues into June, where the sun graces the region for only 9 hours. Yet, there’s a hint of balance as July and August regain stability with 10 hours each. The overall pattern reflects the rhythm of the seasons, where daylight hours decrease to a minimum before gradually increasing again in the springtime, fostering a dynamic interplay between light and dark that shapes the seasonal landscape of Mendoza.

Average Daylight Hours in Mendoza for May

The chart illustrates the variation in daylight duration in Mendoza throughout the year, with May highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec14h 1m13h 14m12h 14m11h 13m10h 23m9h 59m10h 12m10h 56m11h 54m12h 55m13h 49m14h 16m
Data source: Mendoza daylight hours, calculated by summing the hours between sunrise and sunset for each day.

May Winds in Mendoza

As May settles in Mendoza, Argentina, the wind tends to be gentle, averaging a speed of 2.0 m/s (4 mph). This is part of a gradual transition toward more variable winds in the months ahead. Following a trend seen since January with higher speeds peaking at 2.9 m/s (7 mph) in October, May represents a slight dip from the breezier April. Despite this temporary lull, the consistent low winds reflect the region's characteristic calmness, setting the stage for the vibrant springtime that follows. As the season progresses, anticipation builds for the refreshing gusts that invigorate the landscape and enhance the allure of Mendoza’s renowned vineyards.

Average May Wind Speed in Mendoza

The chart displays monthly wind speed patterns in Mendoza, 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.
JanFebMarAprMayJunJulAugSepOctNovDec2.72.22.41.92.0 m/s2.02.02.32.82.92.82.8
Data source: Mendoza May wind data, generated using information from the Copernicus Climate Change Service.

How May Weather in Mendoza Compares to Other Months

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

May and January present contrasting weather patterns. In May, temperatures range from a minimum of 1°C (34°F) to a maximum of 26°C (80°F), with an average temperature of 12°C (55°F) and around 31 mm (1.2 in) of precipitation over five days. The humidity is relatively high at 69%. In contrast, January experiences much warmer weather, with temperatures spanning from a minimum of 9°C (49°F) to a sweltering maximum of 40°C (104°F), and an average temperature of 26°C (80°F). Despite having slightly less precipitation at 27 mm (1.0 in) over four days, January is characterized by lower humidity at 40%. For more details, you can visit Mendoza weather in January.

In comparing the weather of May and February, a notable contrast emerges. May experiences a milder temperature range with a minimum of 1°C (34°F) and an average of 12°C (55°F), peaking at 26°C (80°F). In contrast, February is considerably warmer, featuring temperatures that range from a minimum of 12°C (54°F) to an average of 24°C (76°F), with maximums soaring up to 39°C (103°F). Precipitation is slightly higher in February, totaling 44 mm (1.7 in) over 7 days, compared to May's 31 mm (1.2 in) over just 5 days. Additionally, May's relative humidity is higher at 69%, while February enjoys a more comfortable 46% humidity level. For more details on February's climate, check out Mendoza weather in February.

Comparing the weather in May and March reveals some notable differences. May experiences cooler temperatures, with a minimum of 1°C (34°F) and a maximum of 26°C (80°F), while March tends to be much warmer, showcasing a minimum of 7°C (45°F) and a peak of 37°C (98°F). Precipitation levels are somewhat similar, with May receiving 31 mm (1.2 in) over 5 days and March slightly higher at 34 mm (1.3 in) over 6 days. Additionally, May is more humid, averaging 69%, compared to March's lower humidity of 54%. For more details on March weather specifics, you can check Mendoza weather in March.

In comparing the weather of May and April, May experiences a cooler temperature range with a minimum of 1°C (34°F), an average of 12°C (55°F), and a maximum of 26°C (80°F). In contrast, April boasts warmer temperatures, with a minimum of 3°C (38°F), an average of 18°C (64°F), and a maximum that can soar to 34°C (94°F). While May sees slightly less precipitation at 31 mm (1.2 in) over 5 days, April has a bit more rain at 37 mm (1.5 in) across 6 days. Humidity levels are also marginally higher in May at 69%, compared to 65% in April. For a more detailed insight into April's weather, check out Mendoza weather in April.

In comparing the weather of May and June, we notice a shift in temperatures and precipitation. May features a wider temperature range with a minimum of 1°C (34°F) and an average of 12°C (55°F), peaking at 26°C (80°F), while June sees cooler temperatures overall, with a minimum of -3°C (28°F) and an average of 9°C (48°F), reaching a maximum of 24°C (76°F). Precipitation is also reduced in June, with only 15 mm (0.6 in) over 3 days compared to May's 31 mm (1.2 in) spread across 5 days. Additionally, June experiences lower humidity levels at 64%, compared to May's 69%. For a more detailed look at June weather in Mendoza, visit Mendoza weather in June.

In May, the weather is characterized by a broader temperature range, with minimums of 1°C (34°F) and maximums reaching up to 26°C (80°F), leading to an average of 12°C (55°F). The humidity is relatively high at 69%, and the month experiences 31 mm (1.2 in) of precipitation over about five days. In contrast, July's weather is cooler overall, featuring a lower average temperature of 8°C (47°F) and a maximum of 23°C (74°F). July typically sees less rain, with only 10 mm (0.4 in) of precipitation over just two days and slightly lower humidity at 65%. For more details on the weather specifics in July, check out Mendoza weather in July.

May and August weather exhibits notable differences in temperature and precipitation. In May, temperatures range from a minimum of 1°C (34°F) to a maximum of 26°C (80°F), with an average temperature of 12°C (55°F). This month experiences moderate precipitation, averaging 31 mm (1.2 in) over about five days, coupled with a humidity level of 69%.

In contrast, August features slightly cooler temperatures, with a minimum of -1°C (31°F) and a maximum of 31°C (89°F), but an average that remains close at 11°C (53°F). This month has significantly less precipitation at just 10 mm (0.4 in) over two days and lower humidity at 60%. For a more detailed look at August weather in Mendoza, check out Mendoza weather in August.

In comparing the weather between May and September, it's clear that September offers a more moderate climate overall. In May, temperatures range from a chilly 1°C (34°F) at night to a warm 26°C (80°F) during the day, with an average temperature of 12°C (55°F). This month experiences approximately 31 mm (1.2 in) of precipitation over about 5 days, accompanied by relatively high humidity at 69%. In contrast, September boasts a slightly lower minimum temperature of 0°C (32°F) and a higher maximum of 34°C (94°F), with an average temperature reaching 15°C (60°F). Additionally, the month sees significantly less rainfall, only 14 mm (0.6 in) over 2 days, and the humidity drops to 51%. For more detailed information, check out Mendoza weather in September.

May and October both present distinct weather characteristics. In May, temperatures range from a chilly minimum of 1°C (34°F) to a comfortable maximum of 26°C (80°F), with an average of 12°C (55°F). This month also experiences about 31 mm (1.2 in) of precipitation over approximately 5 days, accompanied by a relatively high humidity level of 69%. In contrast, October sees slightly warmer conditions, with a minimum of 2°C (36°F) and a much higher maximum temperature of 37°C (98°F), averaging 18°C (66°F). This month is drier with only 26 mm (1.0 in) of precipitation falling over just 3 days, producing a more comfortable humidity level of 49%. For more detailed information about October weather, visit Mendoza weather in October.

May and November showcase contrasting weather patterns in Mendoza. In May, temperatures range from a cool 1°C (34°F) at night to a pleasant maximum of 26°C (80°F) during the day, with an average temperature of 12°C (55°F). The month experiences about 31 mm (1.2 in) of precipitation over five days, contributing to a humidity level of 69%. In contrast, November brings warmer temperatures, with nighttime lows of 9°C (48°F) and daytime highs soaring to 38°C (101°F), averaging at a comfortable 22°C (73°F). Despite the same level of precipitation of 31 mm (1.2 in) over five days, November's humidity is significantly lower at 44%. For more detailed information on November weather, you can visit Mendoza weather in November.

May and December present quite a contrast in weather conditions. In May, temperatures range from a cool 1°C (34°F) at night to a moderate average of 12°C (55°F) during the day, peaking at 26°C (80°F). The month also sees about 31 mm (1.2 in) of precipitation spread over five days, accompanied by a higher humidity level of 69%. In contrast, December experiences significantly warmer weather, with nighttime lows starting at 11°C (52°F) and daytime averages reaching 25°C (77°F), while peaks can soar up to 40°C (104°F). The month is comparatively drier, with only 26 mm (1.0 in) of rainfall over the same number of days, coupled with lower humidity at 35%. For more details, check out Mendoza weather in December.

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Conclusion: What to Expect From May Weather in Mendoza

As May arrives in Mendoza, it ushers in a shift in weather, marked by cooler temperatures and a gentle increase in precipitation compared to the preceding months. While daytime temperatures can climb to a pleasant 26°C (80°F), the evenings become notably cooler, with averages dipping to 12°C (55°F) and minimums reaching 1°C (34°F), creating a refreshing contrast. This month typically sees around 31 mm (1.2 in) of rain over 5 days, alongside a humidity level of 69%, contributing to a more vibrant and lush landscape. This transition is not just about cooler weather; it sets the stage for Mendoza’s beautiful autumn scenery, making it a perfect time to enjoy the region's natural beauty. For a deeper dive into the intricacies of Mendoza’s seasonal shifts, check out the detailed insights on Mendoza Climate.