Last updated: January 18, 2025
San Luis, Argentina, exhibits a diverse climate characterized by multiple Köppen-Geiger classifications, including BSk (Cold Semi-Arid), Cfa (Humid Subtropical), BSh (Hot Semi-Arid), and Cwa (Monsoon-influenced Humid Subtropical). This unique climatic interplay results in a temperature range that starkly contrasts seasonal extremes: winter minimums dip to an average of -7°C (20°F) in August, while summer heat can soar to a blistering maximum of 45°C (113°F) in December. The overall average temperature hovers around a comfortable 17°C (63°F), making San Luis a fascinating study in the interactions between aridity, humidity, and seasonal temperature variations.
San Luis, Argentina, showcases distinct seasonal temperature patterns throughout the year, beginning with the scorching summer months of January and February, where average highs reach up to 45°C (113°F) and 42°C (109°F), respectively. As autumn arrives in March and April, temperatures gradually decline, with averages dropping to 20°C (69°F) and 17°C (64°F), while nighttime lows can dip to around 1°C (35°F). The approach of winter heralds a more significant drop, with May and June displaying average temperatures around 13°C (55°F) and 9°C (49°F), alongside chilling minimums as low as -6°C (21°F). July and August remain the coldest months, marked by persistent lows of -7°C (20°F) yet gradually warming to about 12°C (54°F) by late August. As spring unfolds in September and October, temperatures begin to rise, culminating in average highs of 42°C (107°F) in October, before returning to the heat of summer in December, completing a captivating annual cycle of climatic extremes.
Villa General Roca experiences a chilling minimum of -6°C (22°F) in August, while its temperature can soar to a scorching 41°C (107°F) in December. In Villa Mercedes, temperatures range from a minimum of -5°C (24°F) in August to a peak of 42°C (108°F) in January. Meanwhile, San Luis records similar lows with a minimum of -5°C (23°F) in August and heats up to a maximum of 40°C (104°F) in January. For more detailed monthly temperatures, you can visit monthly temperatures in Villa General Roca, monthly temperatures in Villa Mercedes, and monthly temperatures in San Luis.
Precipitation in San Luis, Argentina, exhibits a clear seasonal trend, with the highest rainfall occurring during the summer months of January and February. Each of these months records approximately 76 mm (3.0 in) and 75 mm (2.9 in) of precipitation, respectively, typically spread over about nine and eight days. As the seasons transition into autumn, rainfall slightly decreases, with March and April experiencing 70 mm (2.8 in) and 64 mm (2.5 in) of rain over seven and six days, respectively. This wetter period begins to taper off as May ushers in a dramatic reduction, receiving only 26 mm (1.0 in) spread across four days.
The winter months see a further decline in precipitation, with June, July, and August registering notably low totals of 14 mm (0.5 in), 11 mm (0.4 in), and just 4 mm (0.1 in), the latter experiencing no measurable rainfall. As spring arrives, September and October showcase a slight resurgence, with precipitation levels of 25 mm (1.0 in) and 36 mm (1.4 in) over three to five days. November sees a return to higher rainfall levels at 70 mm (2.7 in) over nine days, while December experiences a moderate 57 mm (2.3 in) of rain, rounding out the year with a mix of summer and spring trends.
San Luis, Argentina, enjoys a notable variation in sunshine duration throughout the year, with a clear progression of increasing sunlight as it transitions from winter to summer. The year kicks off with January receiving 311 hours of sunshine, followed closely by February with an impressive 330 hours. March maintains this upward trend, peaking at 331 hours, before sunlight begins to wane in the cooler months of April and May, where hours drop to 271 and 255, respectively. This seasonal decrease highlights the shift towards winter, which is characterized by less sunshine, yet June and July see a modest rebound, reaching up to 271 hours.
As spring blooms into summer, San Luis experiences a remarkable surge in sunshine, culminating in December with a dazzling 389 hours of sunlight. This increase underscores the region's climate, providing abundant sunlight during the warmer months. Notably, the months of November and October also stand out, with 361 hours and 344 hours of sunshine, indicating that late spring and early summer are prime times for basking in sunlight. Overall, the sunshine pattern in San Luis reflects a robust seasonal cycle, with vibrant summers and comparatively milder winters, enhancing the area’s appeal for sun-seekers year-round.
The UV Index in San Luis, Argentina, presents a significant seasonal pattern that underscores the intense sun exposure typical of its climate. The summer months, particularly January to March, are characterized by extreme UV levels, peaking at an index of 15 in both January and December, and 14 in February, translating to a burn time of just 10 minutes. This highlights the necessity for protective measures during peak summer months when sun exposure is at its highest, presenting a substantial risk for skin damage in a short time frame.
As the year progresses into autumn and winter, the UV Index exhibits noteworthy fluctuations. By April, levels decrease to 8, falling into the "very high" category, which requires about 15 minutes of exposure before one is at risk of burning. The trend continues with moderate levels of 4 to 5 during the winter months of June and July, indicating a reduced risk for sunburn, allowing for longer exposure times of 30 minutes before burning occurs. However, as spring re-emerges, September sees a return to the "very high" category with a UV Index of 9, reminding residents and visitors alike to remain vigilant about sun safety throughout the year.
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Daylight duration in San Luis, Argentina, reveals a clear seasonal rhythm, characterized by significant variations throughout the year. The year begins with an impressive 14 hours of daylight in January, allowing residents ample time to enjoy outdoor activities. As summer transitions into autumn, daylight gradually decreases, reaching 12 hours in March and further declining to 11 hours in April. By May, the diminishing light results in just 10 hours of daylight, signaling the approach of winter, where daylight hours are at their shortest, climaxing at 9 hours in June.
However, as the winter months pass, daylight begins to extend once again, gradually rebounding to 10 hours in July and August. The transition into spring in September sees a resurgence to 11 hours, followed by a gradual increase back to 14 hours by December. This cyclical pattern of daylight duration not only influences daily life in San Luis but also marks the seasonal changes that define the region's climate, offering unique opportunities for outdoor activities throughout the year while reminding residents of the beauty of the changing seasons.
Buena Esperanza, Argentina, experiences a diverse climate with hot summers and cold winters. January and December are the warmest months, featuring average temperatures around 25°C (77°F) and significant sunshine, peaking at 380 hours in December. Winter months, particularly June and July, see temperatures drop to as low as -4°C (25°F) while receiving minimal precipitation. Rainfall is highest in March and April, averaging 70 mm, with summer months delivering more precipitation. For detailed climate information, visit Buena Esperanza climate.
Candelaria, Argentina, experiences a predominantly warm climate, with average temperatures ranging from 10°C (51°F) in July to 27°C (81°F) in January. The region sees its highest temperatures in the summer months, with peaks reaching up to 45°C (113°F) in December. Precipitation is concentrated mainly in the warmer months, with February recording the highest rainfall at 104 mm (4.1 in). Candelaria enjoys abundant sunshine, particularly in November and December, with over 360 hours of sunshine recorded during these months. For further details, visit Candelaria climate.
The climate in Concaran, Argentina, is characterized by warm summers and cold winters. January features average temperatures of 24°C (76°F) with highs reaching up to 40°C (104°F), while July sees a significant drop, averaging just 8°C (48°F). Precipitation is fairly low during the winter months, especially in August with only 2 mm (0.1 in) of rainfall, while January and February receive the highest amounts at 55 mm (2.2 in) and 63 mm (2.5 in) respectively. The region enjoys abundant sunshine, particularly in November and December, with over 360 hours of sun each month. For more details, visit Concaran climate.
Justo Daract, Argentina, experiences a climate characterized by hot summers and cool winters. January features the highest average temperatures at 25°C (76°F), peaking at 42°C (108°F), while July sees the lowest averages around 9°C (49°F). The region experiences seasonal precipitation, with the wettest months being March and November, receiving 81 mm (3.2 in) and 79 mm (3.1 in), respectively. Sunshine hours are abundant, particularly in December with 384 hours, contributing to a generally dry climate during winter months, notably July and August. For more detailed information, visit Justo Daract climate.
La Toma, Argentina experiences a diverse climate with warm summers and cold winters. January sees average temperatures rise to 22°C (72°F) with significant rainfall of 93 mm, while June and July are the coldest months, averaging around 8°C (47°F) with minimal precipitation of about 12 mm. The region enjoys considerable sunshine, peaking in December with 390 hours. As the seasons change, the temperatures fluctuate, making La Toma's climate both dynamic and engaging. For more detailed information, visit La Toma climate.
Libertador General San Martin, Argentina, experiences a diverse climate with hot summers and cold winters. January sees average temperatures of 22°C (72°F) and significant rainfall of 132 mm (5.2 in), while July has cooler averages of 8°C (46°F) with minimal precipitation. The region enjoys abundant sunshine, peaking in December with 394 hours, contributing to its warm summers. For more detailed information, visit Libertador General San Martin climate.
Lujan, Argentina, experiences a diverse climate with hot summers and cool winters. January is the warmest month, featuring average temperatures around 26°C (80°F) and notable sunshine, totaling 313 hours. Precipitation is highest in February, reaching 88 mm (3.4 in), while minimal rainfall occurs in August, averaging only 2 mm (0.1 in). Winter months, particularly June and July, see average temperatures drop to around 10°C (50°F) and less precipitation, highlighting the region's seasonal variation. For more detailed climate information, visit Lujan climate.
Merlo, Argentina experiences a diverse climate with warm summers and cool winters. January averages 21°C (71°F) while December can reach up to 38°C (100°F), making it the hottest month. Rainfall is heaviest in February with 122 mm (4.8 in) and lightest in August at just 5 mm (0.2 in). The region enjoys abundant sunshine, particularly in November with 364 hours, contributing to its warm and inviting atmosphere throughout the year. For more detailed climate information, visit Merlo climate.
Naschel, Argentina experiences a varied climate characterized by hot summers and cold winters. January sees maximum temperatures reaching up to 38°C (101°F), while July can drop to a minimum of -6°C (22°F). The region receives the most rainfall during the summer months, particularly in January with 93 mm (3.7 in), and the driest period tends to be in August. Despite the rainfall, sunshine is abundant, with December boasting the highest at 390 hours. For more detailed information, visit Naschel climate.
San Francisco del Monte de Oro, Argentina experiences a diverse climate, with hot summers and chilly winters. January and December are particularly warm, averaging temperatures around 26-41°C (79-105°F), while June and July see cooler temperatures, ranging from -4 to 10°C (24-50°F). Precipitation is highest in the summer months of January and February, averaging 64-85 mm, while winter months see minimal rainfall, dropping to as low as 1 mm in August. Annual sunshine is abundant, peaking in December with 394 hours. For more information, visit San Francisco del Monte de Oro climate.
San Luis, Argentina experiences a diverse climate with hot summers and cooler winters. January and February boast the highest temperatures, averaging around 24-22°C (75-72°F) while reaching maximums of 40°C (104°F) and 37°C (98°F), respectively. Rainfall is most prevalent in summer, especially in January (92 mm), tapering off significantly in winter months, with July seeing only 9 mm. Sunshine is abundant, peaking in December with 385 hours, making it an ideal destination for sun-seekers. For detailed climate information, visit San Luis climate.
Santa Rosa del Conlara, Argentina, experiences a diverse climate characterized by warm summers and cool winters. Temperatures range from a comfortable average of 25°C (77°F) in January to cooler averages around 9°C (49°F) in June and July. The area receives moderate rainfall, peaking at 60 mm (2.4 in) in February, while August is particularly dry with just 2 mm (0.1 in) of precipitation. Sunshine is abundant, especially in the summer months, with December boasting up to 391 hours of sunlight. For more detailed information, visit the Santa Rosa del Conlara climate.
Tilisarao, Argentina, experiences a temperate climate characterized by warm summers and cool winters. January and December are the warmest months, with temperatures reaching up to 39°C (103°F) and average highs around 23°C (74°F), while July is the coldest, averaging just 8°C (47°F). Precipitation is highest in the summer months, peaking at 57 mm (2.2 in) in January and February, while winter months see significantly less rainfall. The region enjoys considerable sunshine, particularly in November, which records 358 hours of sunshine. For more detailed information, visit Tilisarao climate.
Union, Argentina experiences a diverse climate throughout the year, characterized by hot summers and mild winters. January and December see the highest temperatures, with maximums reaching up to 45°C (113°F) and 42°C (109°F), respectively, while July is the coldest month, with minimums dropping to -5°C (24°F). Precipitation is relatively low in winter months but increases during the spring and summer, especially in November with 66 mm (2.6 in) of rainfall. Sunshine is abundant, peaking at 384 hours in December, making it a bright and warm destination. For more details, visit Union climate.
Villa General Roca, Argentina, experiences a diverse climate characterized by hot summers and cold winters. January sees average temperatures around 26°C (79°F) and receives the highest rainfall of 73 mm (2.9 in), while December boasts the most sunshine with 391 hours. Winters, particularly in June and July, can be quite chilly, with minimum temperatures dropping to -5°C (24°F) and minimal precipitation. As the seasons transition, September and October bring warmer days and a gradual increase in rainfall, culminating in a vibrant spring. For detailed climate information, visit Villa General Roca climate.
Villa Mercedes, Argentina, experiences a diverse climate characterized by hot summers and cool winters. January sees average temperatures around 25°C (77°F) with peaks up to 42°C (108°F), while July's average drops to 9°C (48°F). Notable precipitation occurs during the warmer months, especially in March and November, averaging around 74 mm (2.9 in) and 74 mm (2.9 in) respectively. The city enjoys ample sunshine throughout the year, with December boasting the highest at 388 hours. For more detailed information, visit Villa Mercedes climate.
In conclusion, the climatic dynamics of San Luis, Argentina, are intricately woven into the fabric of its daily life, characterized by distinct seasonal variations in temperature, precipitation, sunshine duration, UV Index, and daylight. The region's scorching summers, marked by extreme UV exposure and abundant sunlight, contrast sharply with the cooler, shorter days of winter. These patterns not only highlight the need for sun protection during the intense summer months but also showcase the appeal of outdoor pursuits in the more temperate seasons. As residents and visitors navigate this captivating climate, understanding these trends becomes essential for maximizing enjoyment and safety in this vibrant Argentine locale.