Last updated: January 18, 2025
The climate of Entre Rios, Argentina, is characterized by a Köppen-Geiger classification of Cfa, indicative of a humid subtropical climate. Throughout the year, temperatures exhibit significant variation, with a minimum of -5°C (23°F) in July and a scorching maximum of 42°C (109°F) during January. The average temperature hovers around 19°C (66°F), providing a generally mild environment that supports a diverse range of ecosystems and agricultural activities. This climatic profile highlights the region's seasonal extremes, making it a unique study of transitional weather patterns.
Entre Rios, Argentina, experiences distinct seasonal temperature patterns, with warm summers and cooler winters. January marks the peak of summer, showcasing a broad range from a minimum of 11°C (53°F) to a sweltering maximum of 42°C (109°F) and an average of 25°C (78°F). As the year progresses into autumn, temperatures gradually decline, with March averaging 22°C (72°F) before dropping further in April and May, where the average dips to 19°C (67°F) and 15°C (59°F) respectively. Winter months, particularly July, bring the coldest temperatures, featuring a minimum of -5°C (23°F) and an average of 12°C (53°F). Transitioning into spring, temperatures begin to rise again, with October and November averaging 19°C (66°F) and 22°C (72°F), respectively, as summer returns. This climatic cycle highlights the region's significant temperature variations, creating a dynamic environment throughout the year.
Gualeguaychu experiences a minimum temperature of -3°C (28°F) in July and a maximum of 42°C (107°F) in January, while Parana has slightly milder extremes with a minimum of -2°C (29°F) in July and a maximum of 40°C (105°F) in January. For more detailed insights into their monthly temperatures, you can visit monthly temperatures in Gualeguaychu and monthly temperatures in Parana.
Precipitation in Entre Rios, Argentina, showcases a pronounced seasonal pattern, with the highest levels occurring during the summer months. January leads the way, delivering 119 mm (4.7 in) of rainfall over approximately 7 days, followed closely by February and March, which receive 90 mm (3.6 in) and 92 mm (3.6 in), respectively. These summer months are characterized by relatively high rainfall intensity, contributing to the region's vibrant ecosystems and agricultural productivity. As autumn approaches, precipitation remains steady, peaking again in April at 99 mm (3.9 in) and consistently hovering around 100 mm in May, ensuring adequate moisture for crops.
As winter sets in, rainfall begins to taper off, with July and August experiencing the least precipitation, totaling 55 mm (2.1 in) and 68 mm (2.7 in) respectively, and with only 5 to 6 rainy days each month. September marks the start of a gradual increase in precipitation, reaching 84 mm (3.3 in), while October and December see a resurgence, with both months averaging around 102 mm (4.0 in). The annual precipitation pattern in Entre Rios underscores the importance of the wet season for agricultural harvests, while the drier winter months allow for drier conditions that can support different agricultural practices.
In Entre Rios, Argentina, sunshine duration varies significantly throughout the year, reflecting the seasonal shifts common to the region. The summer months are particularly generous in daylight, with December boasting the highest total of 381 hours of sunshine, followed closely by November at 341 hours. January and February also contribute to this trend, showcasing 289 hours and 316 hours respectively. This peak in sunshine not only enhances the warmth and vitality of summer but also supports agricultural growth, making these months essential for crop development.
As the seasons transition into autumn and winter, sunshine hours begin to decline steadily. April marks a drop to 272 hours, while May and June see further decreases, with only 229 hours and 216 hours of sunlight. This period represents the least amount of sunlight across the year, creating conditions that can impact both mood and local ecosystems. However, as winter gives way to spring, sunshine hours slowly rise again, with August recovering to 276 hours and September seeing 261 hours. This gradual increase signals the approach of warmer temperatures and longer days, revitalizing the environment in preparation for the upcoming summer. Overall, the sunshine patterns in Entre Rios illustrate a dynamic interplay between seasonal changes and agricultural cycles, emphasizing the importance of light for both the natural world and human activities.
The UV Index in Entre Rios, Argentina, exhibits significant variability throughout the year, closely aligning with the region's seasonal cycles. During the summer months of January through March, the UV Index reaches extreme levels, peaking at 15 in January and remaining high at 13 in February and 12 in March. With such elevated values, the recommended burn time is alarmingly short, at just 10 minutes for individuals without adequate sun protection. This extreme exposure underscores the need for precautionary measures such as sunscreen, protective clothing, and seeking shade, particularly during peak sunlight hours.
As the year progresses into the cooler months, the UV Index lowers but maintains considerable intensity. April sees a reduction to 9, still categorized as very high, while May drops further to 6, moving into the high exposure category. The months of June and July present moderate levels with UV Index values of 4 and 5, allowing for more extended safe exposure times of 30 minutes. However, as spring approaches, the UV Index climbs again, with significant values in September, October, and November, returning to extreme levels of 14 in both November and December. This pattern not only emphasizes the changing intensity of solar radiation but also highlights the importance of continuous sun safety practices throughout the year, particularly during peak UV months.
UV Risk Categories
In Entre Rios, Argentina, daylight duration displays a clear seasonal rhythm, characterized by longer days during the warmer months and shorter days in winter. January and February each provide about 13 hours of daylight, creating ample opportunity for outdoor activities and agricultural pursuits. As March arrives, there is a slight decline to 12 hours, marking the transition into autumn. The reduction continues through April and May, with daylight lasting 11 and 10 hours, respectively, as the region prepares for the cooler months ahead.
The winter months of June, July, and August consistently offer around 10 hours of daylight, signifying the lowest levels of illumination in the year. However, as the days begin to lengthen once more, September sees a brief increase back to 11 hours. October ushers in 12 hours of daylight, paving the way for a return to longer days by November, which again sees 13 hours. By December, daylight extends to 14 hours, peaking at this time as the region embraces the warmth and vibrancy of summer. This cycle of daylight duration not only influences daily life in Entre Rios but also plays a critical role in the agricultural calendar and local ecosystems.
Gualeguaychú, Argentina, features a temperate climate with hot summers and mild winters. January is the warmest month, averaging 25°C (78°F) with maximum temperatures reaching 42°C (107°F), while July is the coolest with averages around 11°C (53°F). Precipitation is highest in the summer months, peaking at 120 mm (4.7 in) in January, and sunshine hours are abundant, particularly in December with 381 hours. The city experiences a marked seasonal variation, with a comfortable climate suitable for year-round activities. For more details, visit Gualeguaychu climate.
The climate in Paraná, Argentina, is characterized by warm summers and mild winters. January sees the highest temperatures, with average highs around 25°C (78°F) and significant rainfall of 118 mm (4.6 in). During the winter months, particularly in July, temperatures can drop to a minimum of -2°C (29°F), with lower precipitation levels. Sunshine is abundant, peaking in December with 381 hours and averaging around 300 hours during the summer months. For more detailed information, visit Parana climate.
In conclusion, the climatic patterns of Entre Rios, Argentina, reveal a region characterized by distinct seasonal variations in temperature, precipitation, sunshine duration, UV Index, and daylight. The humid subtropical climate fosters warm summers, marked by significant sunshine and extreme UV exposure, promoting both recreational and agricultural activities. Conversely, the cooler months offer a respite with reduced temperatures and daylight hours, necessary for crop cycles and environmental balance. Understanding these climatic dynamics is essential for local residents, farmers, and policymakers alike, as they navigate the impacts of seasonal changes on daily life, health, and the thriving ecosystems of Entre Rios.