Last updated: January 18, 2025
Jujuy, Argentina, exhibits a diverse climate characterized by several Köppen-Geiger climate classes, including Cwa, Cwb, BSk, and ET. The region experiences extreme temperature variations, with an impressive minimum of -13°C (9°F) in July, showcasing its coldest winters, while the summer months can soar to a maximum of 44°C (112°F) in October. Despite these extremes, the average annual temperature remains a moderate 15°C (59°F), making Jujuy a unique climatic zone that embodies both harsh winters and sweltering summers.
In Jujuy, Argentina, temperature patterns reveal distinct seasonal trends that oscillate between notable extremes. The year begins with summer, displaying high daytime temperatures that peak in January at 43°C (109°F), gradually moderating through February and March. As autumn sets in, average temperatures dip, with April marking the transition to cooler months, and minima falling to -8°C (17°F). The winter months of June and July are particularly frigid, reaching lows of -13°C (9°F), while average temperatures hover around 9°C (49°F). As spring approaches in August, temperatures begin to rise again, with the mercury climbing back to a high of 39°C (102°F) in September. The heat returns to its peak in October and November, when maximum temperatures soar again, culminating in December with values close to 42°C (107°F). This cyclical pattern underscores the dramatic variability and seasonal shifts characteristic of Jujuy's climate.
San Salvador de Jujuy experiences a significant temperature range, with a minimum of -3°C (27°F) in June and a maximum of 34°C (94°F) in October monthly temperatures in San Salvador de Jujuy. In Humahuaca, temperatures can drop to -9°C (15°F) in August, while peaking at 24°C (75°F) in October monthly temperatures in Humahuaca. Meanwhile, Tilcara records its coldest temperature at -10°C (14°F) in August and reaches a maximum of 27°C (81°F) in November monthly temperatures in Tilcara.
Jujuy, Argentina, experiences a marked seasonal variation in precipitation, with the wettest months occurring during the summer. January and February each receive approximately 160 mm (6.3 in) of rain, signaling the onset of the rainy season, while March sees a slight increase to 163 mm (6.4 in). Throughout these months, rainfall is frequent, averaging around 16 to 19 rainy days, contributing to lush vegetation and vibrant ecosystems. The precipitation gradually declines in April to 126 mm (5.0 in), followed by a notable decrease in May to 53 mm (2.1 in), as the region transitions into drier conditions.
As winter approaches, Jujuy sees a significant reduction in rainfall, with June recording just 20 mm (0.8 in) and July dropping further to 18 mm (0.7 in). This dry spell continues through August, when rainfall reaches a minimal 14 mm (0.5 in). Precipitation begins to rise again in September with 26 mm (1.0 in), followed by increases in October (75 mm (3.0 in)) and November (113 mm (4.5 in)) as warmer months approach. December marks a return to heavier rainfall, peaking at 174 mm (6.9 in), with a return of 18 wet days, thus illustrating the cyclical nature of rainfall that defines Jujuy's climate.
In Jujuy, Argentina, sunshine duration showcases a compelling seasonal pattern, with a distinct increase in sunlight hours as the year progresses. Starting from the winter months, June and July provide a solid foundation with 275 and 293 hours of sunshine, respectively. As spring and summer unfold, a remarkable rise is observed, peaking in August with a noteworthy 321 hours of sunlight. This upswing during the transition from winter to warmer months not only fosters vibrant natural landscapes but also underscores the importance of sunlight for local agriculture and ecosystems.
The latter part of the year continues this trend, with significant sunshine hours maintained through October (316 hours) and December (320 hours), contributing to a bright and warm environment. Interestingly, the late summer months also experience substantial sunlight, making February and March optimal for outdoor activities with 270 and 283 hours of sunshine, respectively. However, April sees a brief dip to 257 hours, hinting at a potential for cloudier days as the season shifts. Overall, Jujuy's climate offers an impressive range of sunshine hours throughout the year, making it an ideal destination for those seeking both warmth and light.
Jujuy, Argentina, experiences an exceptionally high UV Index throughout the year, with the most extreme values occurring during the summer months. January and February see astonishing levels, reaching a peak UV Index of 22 in February, classifying it as extreme and necessitating protective measures for outdoor activities within just 10 minutes of sun exposure. In March, while slightly lower at 17, the UV Index still remains in the extreme category, emphasizing the need for vigilance against UV radiation during these months. Even in the later part of spring, the UV levels are notably high, with October, November, and December reflecting values around 18 to 21.
As the seasons transition into winter, UV Index values moderate, yet they still indicate significant levels of radiation. By June, the UV Index drops to 8, categorized as very high, allowing for a slightly longer safe exposure time of 15 minutes before experiencing harmful effects. This trend continues into July and August, where values hover around 10 and 12 respectively. However, as spring re-emerges in September, the UV Index escalates back to 15, landing in the extreme category once more. Overall, the data underlines the importance of sun safety measures in Jujuy, especially during the peak summer months when UV exposure poses substantial health risks.
UV Risk Categories
In Jujuy, Argentina, daylight duration exhibits a clear seasonal rhythm that reflects the region's geographical position. The year begins with generous daylight hours in January, lasting 13 hours, providing ample time for outdoor activities and natural exploration. This trend continues into February, where daylight remains at 12 hours, and March, which also holds steady at 12 hours. However, as autumn approaches in April, daylight diminishes to 11 hours and continues to decline through May and the early winter months, where it stabilizes at 10 hours from June to July.
As the season transitions back toward spring, a revival in daylight hours occurs. In August, daylight gradually increases to 11 hours, reflecting the lengthening days. This upward trend persists into September, maintaining 11 hours, before reverting to 12 hours in October. The annual cycle concludes with a return to 13 hours of daylight in both November and December, illuminating the summer months and offering a bright close to the year. This fluctuation in daylight not only affects daily life and economic activities but also highlights Jujuy’s diverse seasonal experiences.
Calilegua, Argentina, experiences a climate characterized by hot summers and cooler winters. January sees the warmest temperatures, with averages around 25°C (77°F) and maximums reaching 40°C (104°F), while July is the coldest month, averaging 12°C (54°F) and dipping to -3°C (26°F). Rainfall is significant, especially from January to April, with March recording the highest precipitation at 240 mm (9.5 in). Despite the variance in temperatures and rainfall, Calilegua enjoys ample sunshine throughout the year, peaking in August with 324 hours. For more detailed climate information, visit Calilegua climate.
Humahuaca, Argentina, experiences a high desert climate characterized by significant temperature variations between seasons. In summer, temperatures range from 1°C (34°F) to 22°C (72°F), with January being the warmest month, while winter lows can drop to -9°C (15°F) in June and August. Precipitation is concentrated mainly in the summer months, peaking at 171 mm (6.7 in) in January, but drops considerably to just a few millimeters during winter. The area enjoys abundant sunshine, with the highest average of 345 hours in October. For more specific climate information, visit Humahuaca climate.
Maimara, Argentina, experiences a varied climate with hot summers and cold winters. January and February are the warmest months, with maximum temperatures reaching up to 26-27°C (79-81°F) and notable sunshine of over 300 hours. In contrast, June to August can be quite chilly, with minimum temperatures dropping to -10°C (14°F) and very little precipitation. The region sees significant rainfall between November and January, but much less during the winter months. For more detailed climate information, visit Maimara climate.
San Pedro de Jujuy, Argentina experiences a hot subtropical climate with significant seasonal variations in temperature and precipitation. Summers (December to February) are characterized by high temperatures, averaging around 25°C (77°F) and receiving the most rainfall, especially in January with 180 mm. Winters (June to August) are cooler, with average temperatures around 13°C (56°F) and minimal precipitation, dropping to as low as 10 mm in July. The region enjoys ample sunshine, particularly in August with up to 300 hours, making it a bright destination year-round. For more details, visit San Pedro de Jujuy climate.
San Salvador de Jujuy, Argentina, experiences a diverse climate with warm summers and cool winters. Temperatures peak in January, averaging 21°C (69°F) with maximums reaching 32°C (90°F), while winter months like June and July see averages around 11°C (52°F) and minimums dropping to -3°C (27°F). The region receives significant rainfall, particularly from January to March, with precipitation peaking in March at 282 mm (11.1 in). Sunshine varies throughout the year, with August enjoying the most hours at 296. For more detailed information, visit San Salvador de Jujuy climate.
Tilcara, Argentina experiences a diverse climate with temperatures varying significantly throughout the year. Summer months like January and February have average temperatures around 11-12°C (53-54°F), while winter sees averages drop to 6-8°C (43-46°F). Rainfall is most abundant in the summer, peaking at approximately 100 mm (3.9 in) in January, with very little precipitation during the winter months. The region enjoys ample sunshine, with October receiving the most hours at 365. For more details, visit Tilcara climate.
In conclusion, Jujuy, Argentina, presents a fascinating climate characterized by distinct seasonal variation in temperature, precipitation, sunshine duration, UV Index, and daylight hours. With a diverse range of environmental factors at play, residents and visitors alike can expect a rich tapestry of weather patterns throughout the year, from the extreme heat of summer to the chilly embrace of winter. The region’s high UV Index in the warmer months calls for vigilant sun safety, while the ample sunlight hours enhance outdoor experiences. Overall, Jujuy's climatic diversity not only enriches its natural beauty but also influences the cultural and agricultural practices that define this vibrant region.