Last updated: August 21, 2025
December in Salta, Argentina offers a vibrant blend of warm temperatures and substantial rainfall. With maximums reaching 28°C (83°F) and an average of 18°C (64°F), the climate is predominantly pleasant, perfect for outdoor exploration. However, visitors should prepare for the possibility of showers, as the region experiences 278 mm (10.9 in) of precipitation over 22 days, resulting in a humidity level of 77%. This mix of warmth and moisture contributes to the region’s lush landscapes and fertile valleys, making it an enchanting time to experience the natural beauty of Salta.
In December, Salta, Argentina, ushers in the peak of summer with a delightful warmth that sets the stage for outdoor adventures. With minimum temperatures hovering around 7°C (45°F), the nights remain comfortably cool, while averages climb to approximately 18°C (64°F), perfectly embodying the spirit of the season. Daytime highs reach a pleasant 28°C (83°F), inviting locals and tourists alike to explore the region's stunning landscapes and vibrant culture. This consistent rise in temperatures from earlier months signals a transition from the cooler spring, making December an ideal time to enjoy Salta's enchanting charm under the sun.
In December, Salta, Argentina, experiences a notable increase in precipitation, with an average of 278 mm (10.9 inches) of rain spread over 22 days. This heavy rainfall marks a shift from the drier months, particularly the stark contrast from June and July when precipitation dips to just 35 mm (1.4 in) and 34 mm (1.3 in), respectively. As the year draws to a close, December delivers a significant uptick in both precipitation and rainy days, making it the wettest month since March. This trend underscores the region's seasonal shift into the wetter summer months, welcoming robust rainfall that supports the lush greenery typical of Salta during this time.
In Salta, Argentina, December experiences a notable humidity level of 77%, indicative of a shift as the year draws to a close. Following the drier months of July and August, when humidity dipped to a mere 44%, the atmosphere begins to awaken with moisture in the lead-up to summer. This upward trend is further reflected in the gradual increase from 74% in May to 70% in November, culminating in the robust humidity of December. The increasing moisture not only signals a change in weather patterns but also heralds the vibrancy of the season, as the lush landscapes come alive, making Salta a captivating destination for travelers seeking both adventure and aesthetic beauty.
In December, Salta, Argentina, experiences an extreme UV Index of 17, marking the peak of the season's intensity, with a burn time of only 10 minutes. This trend of high UV exposure continues from November's score of 16, showcasing a persistent threat of sunburn throughout the summer months. The previous months illustrate a gradual decline in UV intensity as the year progresses but regain their strength into year-end, with values remaining extreme from September onward. As you enjoy the vibrant summer in Salta, it's essential to stay vigilant about sun protection. For detailed forecasts, visit Salta UV Index.
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December in Salta, Argentina, is a sun-soaked delight, boasting an impressive 352 hours of sunshine. As the year comes to a close, this month showcases a vibrant culmination of bright days, slightly tapering from the peak of 356 hours in October. The consistent warmth of the summer season is palpable, allowing residents and visitors alike to bask in nearly all-day sunlight—making it an ideal time for outdoor adventures. This trend of abundant sunshine continues through the end of the year, creating a perfect backdrop for festive celebrations and exploring the stunning landscapes that Salta has to offer.
In Salta, Argentina, December brings a 28% chance of sunny weather, marking a noticeable dip in sunshine compared to the preceding months. As the year progresses, the trend shows a peak in sunshine during the winter months of July (73%) and August (86%), while summer months like January and February experience lower probabilities of clear skies, at 33% and 22%, respectively. Interestingly, there's a significant increase in sunshine starting from May onward, with sunshine likelihood steadily climbing to 64% in June and 73% in July. However, December's chance of sun begins to decline again, suggesting that while the summer season starts to approach, it still presents a mixed bag of weather that travelers should keep in mind.
In Salta, Argentina, December brings a delightful extension of daylight, offering about 13 hours of sun each day, matching the peak light experienced in November. This consistent daylight duration exemplifies the region’s summer season, where the days gradually lengthen from the year’s end. Transitioning from the shorter days in May and June—each with only 10 hours of daylight—the gradual increase is evident as we approach the summer months. Interestingly, as December unfolds, daylight remains stable with 12 to 13 hours from October through February, providing ample time for outdoor activities and cultural experiences. Whether exploring the vibrant landscapes or immersing in local festivities, the long, sunny days of December invite both locals and visitors to enjoy the warm embrace of summer in Salta.
As December settles in Salta, Argentina, the average wind speed gently eddies through the region at 1.4 m/s (3 mph), mirroring the steady breezes of the earlier months. Notably, the winds maintain a consistent presence, showing only a modest increase in strength during the spring months of October and November, where they reach 1.7 m/s (4 mph) and 1.6 m/s (4 mph), respectively. This slight uptick contrasts with the tranquility that December brings, underscoring a transition into the summer season. Over the year, wind speeds fluctuate minimally, reinforcing Salta's reputation for mild and pleasant weather, making it an inviting destination under the warm sun of the closing year.
Weather in Salta varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Salta, focusing on differences in temperature, rainfall, humidity, and UV levels.
In December, the weather is characterized by a mild range of temperatures, with a minimum of 7°C (45°F) and a maximum reaching up to 28°C (83°F). This month experiences significant rainfall, averaging 278 mm (10.9 in) across 22 days, and a humidity level of 77%. In contrast, January sees slightly warmer temperatures with a minimum of 10°C (51°F) and a maximum of 29°C (85°F), along with reduced precipitation of 241 mm (9.5 in) over the same number of days, resulting in higher humidity at 84%. The incremental rise in temperatures and humidity from December to January signifies a subtle yet noticeable shift in the climate during this transition period. For more detailed information on January weather, you can visit Salta weather in January.
In December, the weather showcases a range of temperatures with a minimum of 7°C (45°F) and a maximum reaching up to 28°C (83°F), averaging around 18°C (64°F). The month experiences substantial precipitation of 278 mm (10.9 in) over 22 days, with humidity levels averaging 77%. In contrast, February brings slightly milder minimum temperatures at 10°C (51°F) while maintaining the same maximum of 28°C (83°F), with an average temperature of 17°C (64°F). Precipitation decreases to 267 mm (10.5 in), occurring over 24 days, and humidity rises to 87%. For more details on February weather specifics, you can check Salta weather in February.
In December, the weather tends to be warmer, with average temperatures ranging from a minimum of 7°C (45°F) to a maximum of 28°C (83°F). The month also sees considerable rainfall, totaling 278 mm (10.9 in) across 22 days, contributing to a humidity level of 77%. In contrast, March experiences slightly cooler temperatures, with a minimum of 4°C (40°F) and an average of 16°C (61°F), peaking at 29°C (84°F). Interestingly, March records even higher precipitation, totaling 292 mm (11.5 in) over 24 days, leading to an increase in humidity to 88%. For more detailed insights into March weather, you can visit Salta weather in March.
December and April exhibit distinct weather characteristics, reflecting the transition from late spring to early summer in December and the onset of autumn in April.
In December, temperatures range from a minimum of 7°C (45°F) to a maximum of 28°C (83°F), with an average temperature of 18°C (64°F). The month is marked by higher precipitation, totaling 278 mm (10.9 in) over 22 days, and humidity levels at 77%.
In contrast, April presents cooler conditions, featuring a minimum temperature of 4°C (40°F) and a maximum of 26°C (79°F), averaging at 14°C (58°F). While it still experiences rainfall on 22 days, the total precipitation is lower at 223 mm (8.8 in), and humidity is slightly higher at 85%.
For more detailed insights about the weather in April, you can check Salta weather in April.
In December, the weather is notably warmer with an average temperature of 18°C (64°F) and maximums reaching up to 28°C (83°F), contrasting sharply with May, which has a cooler average of 11°C (53°F) and a maximum of 26°C (78°F). December also experiences significantly more precipitation at 278 mm (10.9 in) over 22 days, while May sees only 120 mm (4.7 in) across 14 days. Humidity levels are relatively similar, with December at 77% and May at 74%, indicating consistently moist conditions in both months. For a closer look at May's weather patterns, visit Salta weather in May.
December and June display contrasting weather patterns. In December, temperatures range from a minimum of 7°C (45°F) to a maximum of 28°C (83°F), with an average of 18°C (64°F). The month is characterized by high precipitation, totaling 278 mm (10.9 in) over 22 days, and a humidity level of 77%, creating a humid environment. In stark contrast, June experiences much cooler temperatures, with a minimum of -4°C (25°F) and a maximum of 26°C (79°F), averaging just 9°C (48°F). Precipitation is significantly lower, at 35 mm (1.4 in) over only 7 days, and humidity levels drop to 56%, resulting in a much drier atmosphere. For more details, you can explore Salta weather in June.
December and July present contrasting weather patterns. In December, temperatures are notably warmer, ranging from a minimum of 7°C (45°F) to a maximum of 28°C (83°F), with an average of 18°C (64°F). This month also experiences significant rainfall, with 278 mm (10.9 in) of precipitation spread over 22 days, leading to a high humidity level of 77%.
In contrast, July boasts much cooler temperatures, with a minimum of -4°C (25°F) and an average of 9°C (48°F), peaking at 26°C (79°F). The month is notably drier, receiving only 34 mm (1.3 in) of rain over just 7 days, resulting in lower humidity at 47%. For more detailed weather insights, check Salta weather in July.
December and August present strikingly different weather patterns. In December, temperatures range from a mild 7°C (45°F) at night to a warm 28°C (83°F) during the day, with an average of 18°C (64°F). This month experiences significant precipitation, totaling 278 mm (10.9 in) over about 22 days, accompanied by high humidity levels of 77%. In contrast, August is considerably cooler, with minimum temperatures dipping to -4°C (25°F) and average daily highs around 30°C (86°F). Rainfall is minimal compared to December, with only 41 mm (1.6 in) occurring over just 6 days and a lower humidity of 44%. These differences highlight the seasonal shifts, making December a wetter and warmer month compared to the drier and cooler August. For specific details on August weather, you can check Salta weather in August.
December and September present distinct weather patterns, showcasing the transition from early spring to the summer months. In December, temperatures range from a minimum of 7°C (45°F) to a maximum of 28°C (83°F), with an average of 18°C (64°F). The month is quite humid, averaging 77% humidity and receiving considerable rainfall of 278 mm (10.9 in) over 22 days. In contrast, September experiences cooler conditions, with temperatures ranging from a minimum of -1°C (30°F) to a maximum of 31°C (88°F) and an average of 13°C (56°F). The month is significantly drier, accumulating only 55 mm (2.2 in) of precipitation over 8 days and maintaining a lower humidity level of 57%. For more detailed weather information, you can visit Salta weather in September.
December generally offers warmer temperatures compared to October, with an average high of 28°C (83°F) versus October's 32°C (90°F). However, October tends to start cooler, with minimum temperatures around 3°C (37°F) compared to December's milder lows of 7°C (45°F). Rainfall is significantly higher in December, with 278 mm (10.9 in) over 22 days, while October sees only 137 mm (5.4 in) across 15 days, resulting in a more humid atmosphere in December at 77% compared to October's 55%. For a detailed look at what to expect, check out Salta weather in October.
In comparing the weather of December and November, both months exhibit similar temperature ranges, with December's average temperature slightly higher at 18°C (64°F) compared to November's 17°C (63°F). Interestingly, December experiences a slight increase in humidity, reaching 77%, compared to November's 70%. However, December also sees a noticeable rise in precipitation, totaling 278 mm (10.9 in) over 22 days, which is significantly higher than November's 210 mm (8.2 in) over 18 days. For more detailed insights, you can check Salta weather in November.
In December, Salta experiences a significant shift in weather compared to other months, showcasing a pleasant blend of warmth and humidity. With average temperatures hovering around a comfortable 18°C (64°F) and peak highs reaching 28°C (83°F), it invites visitors to enjoy outdoor activities. However, December also brings ample rainfall, with 22 days of precipitation contributing to a total of 278 mm (10.9 in), increasing the overall humidity to a balmy 77%. This contrasts starkly with the drier and cooler conditions of the preceding months, highlighting the unique tropical charm of Salta during this vibrant time of year. For a deeper dive into Salta's weather patterns, explore the comprehensive details at Salta Climate.