Last updated: August 21, 2025
September in Luján de Cuyo, Argentina, unveils a delightful transition into spring, characterized by mild temperatures and refreshing weather patterns. The region welcomes a maximum temperature of 26°C (80°F), providing warm days ideal for outdoor exploration, while nighttime temperatures can drop to a chilly average of 9°C (49°F), and occasionally reach a brisk minimum of -5°C (24°F). During this month, a modest precipitation amount of 33 mm (1.3 in) is recorded over 6 days, contributing to the area’s vibrant flora. With humidity levels hovering around 51%, the air feels invigorating, making September an inviting time to experience the stunning landscapes and rich culture of Luján de Cuyo.
In September, Lujan de Cuyo begins to shake off the chill of winter, with temperatures gradually warming as spring approaches. The month typically experiences a minimum of -5°C (24°F), giving way to an average of 9°C (49°F) and a maximum reaching up to 26°C (80°F). This transition marks a notable shift from the depths of winter, where daily highs can still feel quite brisk. As the days lengthen and the sun shines brighter, the climate becomes more inviting, setting the stage for the vibrant growth that characterizes this enchanting Argentine region. It's a delightful time to witness nature's renewal while enjoying comfortable temperatures ideal for outdoor activities.
In September, Lujan de Cuyo experiences a modest uptick in precipitation, with 33 mm (1.3 in) of rainfall spread across six days. This increase follows the dry spells of July and August, which saw only 23 mm (0.9 in) each. As spring approaches, this gentle rise in moisture signals a transition from the drier winter months, setting the stage for the wetter season ahead. Compared to the more substantial rainfall of the preceding summer months, September's totals may seem minimal, but they play a crucial role in rejuvenating the local landscape, nurturing crops, and replenishing groundwater reserves. With October anticipated to bring nearly double the amount of precipitation, September serves as a gentle reminder of nature's cyclical rhythm in this vibrant Argentinian region.
As September settles in Lujan de Cuyo, humidity begins to decline, resting at 51%, a slight decrease from the higher levels observed in the preceding months. This year's progression shows a clear seasonal pattern; the humidity peaks in late autumn, with April and May reaching 65% and 69% respectively, before gradually tapering off. Following the winter months of June and July, which maintain a level of 64% and 65%, September's dip signifies the region's transition towards the warmer months ahead. Interestingly, this month's humidity is notably lower than the summer highs of January and February, suggesting a gradual shift as the region prepares for the dryness of spring.
September marks a transition in Lujan de Cuyo, Argentina, as the UV Index reaches 10, classified as very high. During this month, sun-seekers should remain vigilant, as the recommended burn time is approximately 15 minutes. This trend continues from the high UV levels experienced in the preceding winter months, with values ranging from 5 to 7 in June through August, indicating that while the days are getting warmer, caution is still necessary. Looking ahead, the UV Index is poised to climb even higher as spring progresses, so staying informed is vital. For more detailed information, check out the Lujan de Cuyo UV Index.
UV Risk Categories
September in Luján de Cuyo, Argentina, is a month of transition, where the days grow noticeably longer and sunnier. With 333 hours of golden sunshine, it indicates a delightful shift from the cooler, darker days of winter. This increase sets the stage for October's radiant peak at 371 hours, while still nestling comfortably within a pattern of growing light that began in August. The gradual rise in daylight hours not only enhances the beauty of the region but also invigorates the vineyards, signaling the start of a vibrant season for both locals and visitors alike. As the sun shines brighter, the charm of Luján de Cuyo blossoms, inviting exploration and enjoyment of its stunning landscapes and rich wine culture.
In Lujan de Cuyo, Argentina, September boasts a promising 79% chance of sunny weather, marking it as one of the brighter months of the year. Following the peak of a sunny July at 83% and a vibrant August at 73%, September maintains this trend, making it an ideal time for outdoor activities and enjoying the picturesque landscapes. As the region transitions into spring, the likelihood of clear skies remains high, providing a pleasant backdrop for both locals and visitors to revel in. With this favorable forecast, September stands out as a delightful month to experience the beauty of the area under the warmth of the sun.
In Lujan de Cuyo, Argentina, September marks a gentle transition as daylight begins to stretch longer, averaging 11 hours of sunlight per day. This increase in daylight is a part of the natural rhythm of the seasons, following a dip during the winter months in June and July when daylight reached just 9 to 10 hours. As spring approaches, the gradual revival of longer days can invigorate both the landscape and the spirit. The pattern continues with October, where daylight extends to 12 hours, heralding the warm embrace of summer ahead. The cyclical nature of daylight in Lujan de Cuyo not only sets the pace for daily life but also showcases the beauty and predictability of the changing seasons.
As September arrives in Luján de Cuyo, the gentle breeze begins to pick up, with an average wind speed of 2.2 m/s (5 mph), mirroring the winds of January. This slight increase from the summer months hints at a seasonal shift, as temperatures begin to drop and the landscape transforms. Following September, the wind continues to gain momentum, reaching 2.3 m/s (5 mph) in both October and November, creating an inviting atmosphere for outdoor activities and wine tasting. Throughout this time, the winds maintain a generally soft presence, with fluctuations that suggest a transition from the warmth of winter to the crispness of autumn. The consistent breezes not only offer a refreshing change but also contribute to the unique climate that makes this region a grape-growing paradise.
Weather in Lujan de Cuyo varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Lujan de Cuyo, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January present notably different weather conditions. In September, temperatures range from a chilly minimum of -5°C (24°F) to a comfortable maximum of 26°C (80°F), with an average of 9°C (49°F). This month experiences lower precipitation of 33 mm (1.3 in) over just 6 days and a relatively higher humidity of 51%. Conversely, January boasts much warmer temperatures, with a minimum of 5°C (41°F) and a much warmer average of 20°C (68°F), peaking at 32°C (89°F). However, it also sees increased rainfall amounting to 128 mm (5.0 in) spread across 16 days, but lower humidity at 40%. For a more detailed insight into January weather, you can check Lujan de Cuyo weather in January.
When comparing the weather in September and February, notable differences emerge. September typically features a wider temperature range, with minimums dipping to -5°C (24°F) and maximums reaching up to 26°C (80°F), resulting in an average of 9°C (49°F). The month sees relatively low precipitation at 33 mm (1.3 in) over just 6 days, accompanied by a humidity level of 51%. In contrast, February is warmer, with minimum temperatures of 6°C (44°F) and maximums climbing to 31°C (88°F), averaging 18°C (64°F). This month also experiences significantly higher precipitation, totaling 159 mm (6.2 in) over 20 days, while humidity remains moderate at 46%. For a detailed look at February weather specifics, you can check Lujan de Cuyo weather in February.
When comparing the weather in September and March, there are notable differences in temperature and precipitation. September experiences a minimum temperature of -5°C (24°F) and an average of 9°C (49°F), peaking at 26°C (80°F). In contrast, March sees milder temperatures, with a minimum of 2°C (35°F), an average of 16°C (61°F), and a maximum of 29°C (85°F). Additionally, March tends to be wetter, with 99 mm (3.9 in) of precipitation over 16 days, compared to September's 33 mm (1.3 in) over just 6 days. Humidity is slightly higher in March at 54%, compared to 51% in September. For a more detailed look at the weather patterns in March, you can explore Lujan de Cuyo weather in March.
In comparing the weather of September and April, notable differences emerge. September typically features a wider temperature range, with minimums dipping to -5°C (24°F) and reaching a comfortable maximum of 26°C (80°F). In contrast, April remains milder, with minimum temperatures around 2°C (35°F) and average highs of 26°C (79°F). Additionally, September receives less precipitation, totaling 33 mm (1.3 in) over approximately six days, while April sees a significant increase in rainfall, accumulating 90 mm (3.5 in) across 13 days. The humidity also rises in April to 65%, compared to September's more comfortable 51%. For more insights on April weather, visit Lujan de Cuyo weather in April.
When comparing the weather in September and May in Lujan de Cuyo, we see distinct differences in temperature and precipitation. In September, temperatures range from a minimum of -5°C (24°F) to a maximum of 26°C (80°F), with an average of 9°C (49°F) and a relatively moderate humidity of 51%. In contrast, May experiences slightly cooler temperatures, with a minimum of -6°C (22°F) and a maximum of 22°C (72°F), averaging 8°C (47°F), but with higher humidity levels at 69%. Additionally, May tends to be wetter, recording 56 mm (2.2 in) of precipitation over 9 days compared to September's 33 mm (1.3 in) across 6 days. For more detailed information, refer to Lujan de Cuyo weather in May.
In comparing the weather patterns of September and June, September generally offers a wider temperature range, with a minimum of -5°C (24°F) and a maximum of 26°C (80°F), resulting in an average temperature of 9°C (49°F). In contrast, June features colder temperatures, starting at a low of -10°C (14°F) and peaking at 19°C (67°F), with an average of only 4°C (40°F). While both months experience modest precipitation, September sees slightly more rainfall at 33 mm (1.3 in), compared to June's 27 mm (1.1 in), with precipitation occurring on 6 and 5 days respectively. Additionally, June has higher humidity levels at 64%, compared to September's 51%. For more detailed insights into June weather, you can visit Lujan de Cuyo weather in June.
In comparison to July, September experiences a more varied temperature range, with minimum temperatures of -5°C (24°F) and maximums reaching up to 26°C (80°F), resulting in an average of 9°C (49°F). In contrast, July sees lower temperatures, with a minimum of -10°C (14°F) and a maximum of 19°C (67°F), averaging only 4°C (39°F). Additionally, September tends to have slightly more rainfall, accumulating 33 mm (1.3 in) over 6 days, whereas July has a total of 23 mm (0.9 in) spread across 5 days, but it is also characterized by higher humidity at 65% compared to 51% in September. For more details on July weather specifically, you can check Lujan de Cuyo weather in July.
When comparing the weather of September and August, September is characterized by slightly warmer temperatures, with a minimum of -5°C (24°F), an average of 9°C (49°F), and a maximum of 26°C (80°F). In contrast, August sees minimum temperatures of -4°C (24°F), an average of 6°C (44°F), and a maximum of 24°C (76°F). Additionally, September experiences more precipitation, totaling 33 mm (1.3 in) over 6 days, while August has only 23 mm (0.9 in) during the same number of days. Humidity levels are also lower in September at 51%, compared to the higher humidity of 60% in August. For a more detailed overview, you can check the Lujan de Cuyo weather in August.
September and October both showcase a transition in weather, but with notable differences. In September, temperatures range from a minimum of -5°C (24°F) to a maximum of 26°C (80°F), averaging at 9°C (49°F), accompanied by 33 mm (1.3 in) of precipitation over 6 days and a humidity level of 51%. Conversely, October experiences slightly warmer temperatures, ranging from a minimum of -3°C (27°F) to a maximum of 29°C (84°F), with an average temperature of 12°C (55°F). However, it also brings increased rainfall, totaling 67 mm (2.6 in) across 13 days, while humidity drops slightly to 49%. For more detailed insights into October's climate, visit Lujan de Cuyo weather in October.
In comparing the weather between September and November, September experiences a significant range in temperatures, with a minimum of -5°C (24°F) and a maximum of 26°C (80°F), averaging around 9°C (49°F). The month sees relatively low precipitation totals of 33 mm (1.3 in) over just 6 days, coupled with a humidity level of 51%. In contrast, November enjoys milder nights with a minimum temperature of 3°C (38°F) and can reach highs of 31°C (88°F), averaging 16°C (61°F). However, it is noticeably wetter, with precipitation totaling 127 mm (5.0 in) spread across 17 days, while humidity drops slightly to 44%. For more detailed weather information, check out Lujan de Cuyo weather in November.
In September, temperatures in Lujan de Cuyo typically range from a chilly -5°C (24°F) at night to a pleasant 26°C (80°F) during the day, with an average of 9°C (49°F). The month sees relatively low precipitation, totaling 33 mm (1.3 in) over about 6 days, and humidity levels hover around 51%. In stark contrast, December experiences much warmer conditions, with nighttime lows of 6°C (43°F) and daytime highs reaching 32°C (90°F), averaging 18°C (65°F). This month also brings significantly more rain, accumulating 133 mm (5.2 in) across 19 days, but with lower humidity at 35%. For more detailed information, you can check Lujan de Cuyo weather in December.
As September unfolds in Lujan de Cuyo, it marks a transition into the vibrant spring season, characterized by pleasant temperatures that dance between mild and fresh, offering a delightful respite from the chill of winter. The weather tends to be drier compared to the wetter months preceding it, with only a handful of days seeing precipitation. Humidity levels remain moderate, making it an ideal time for outdoor activities and exploration of the stunning landscapes. As you revel in the beauty of this month, consider learning more about the unique aspects of the region's climate in our detailed guide on Lujan de Cuyo Climate.