Last updated: August 21, 2025
In Gualeguaychú, Argentina, December brings a dynamic range of weather, characterized by maximum temperatures soaring up to 39°C (102°F) and a comfortable average of 24°C (75°F). Nights can cool down significantly, dipping to a minimum of 9°C (49°F). This month also sees a total precipitation of 108 mm (4.3 in) over 7 days, contributing to a relative humidity of 63%. December is a time of warmth and occasional rain, perfect for enjoying the vibrant outdoor life of this charming Argentinian city.
In Gualeguaychú, Argentina, December marks the transition into summer, bringing a delightful warmth that complements the vibrant festivities of the season. With minimum temperatures around 9°C (49°F), residents and visitors experience comfortably cool nights, while daytime averages hover at a pleasant 24°C (75°F), perfect for outdoor activities. The heat intensifies as the month progresses, peaking at a sweltering 39°C (102°F), reminiscent of the soaring temperatures seen in January and February. This pattern of rising warmth, coupled with milder nights, highlights December as a prime time to enjoy the sun's embrace, making it an ideal backdrop for the region's famous Carnival celebrations.
In Gualeguaychú, Argentina, December brings about a notable transition in precipitation patterns, with the month receiving 108 mm (4.3 in) of rain over 7 days. This increase marks a significant rise compared to the drier months preceding it, particularly November, which experienced only 62 mm (2.5 in). December’s wetter spell sets the tone for the incoming summer season, as rainfall typically peaks in January at 120 mm (4.7 in), creating a lush and vibrant landscape. This upward trend in precipitation highlights the shift towards warmer, more humid conditions that characterize the southern hemisphere's summer months. Overall, December serves as a crucial bridge, ushering in heavier rains as Gualeguaychú prepares for the climatic changes ahead.
In Gualeguaychú, Argentina, December marks a transition in humidity levels as the year winds down. With an average humidity of 63%, the month captures the essence of late spring, showcasing a slight dip compared to the peak of 85% in May. Following a gradual rise through the warmer months of February and March, which experience humidities of 61% and 69% respectively, December signifies a balance between the previous summer's heat and the incoming cooler seasons. Interestingly, the humidity in December mirrors that of October, indicating a stable yet comfortable atmosphere for residents and visitors alike. As the city prepares for summer’s end, this humidity trend emphasizes Gualeguaychú’s characteristically temperate climate, offering a refreshing reprieve from the peaks of earlier months.
As December rolls into Gualeguaychú, the UV Index reaches a striking 14, categorizing it as extreme and signaling a burn time of just 10 minutes. This trend of high UV indices continues from November's impressive 13, reflecting a pattern of significant sun exposure as summer approaches in Argentina. From January to March, residents previously faced similar extreme levels, with indices soaring to 15 in January. As the year progresses, there is a noticeable dip in UV levels during the winter months, dropping to moderate ranges from May to July. However, with December's high UV Index, it's crucial to stay vigilant and protect your skin from overexposure. For detailed information on UV levels throughout the year, visit Gualeguaychu UV Index.
UV Risk Categories
In Gualeguaychú, Argentina, the month of December basks in an impressive 381 hours of sunshine, showcasing a significant peak as the year draws to a close. This vibrant increase not only highlights a delightful contrast to the preceding months but also reflects the region's sun-kissed summer allure. Following the pattern, November boasts a strong 344 hours, leading into December's radiant climax, while the earlier months of the year, such as January with 292 hours and February with 319 hours, set the stage for this brilliant finale. As daylight lingers longer, December becomes a beacon of warmth and brightness, inviting both locals and visitors to revel in the outdoor festivities of the season.
As December rolls in, Gualeguaychú, Argentina, offers a promising 77% chance of sunny weather, marking it as one of the sunniest months of the year. This trend aligns with the warmer months, showing a steady inclination towards more sun, especially when compared to the lower percentages in the colder months like June and September, which dip to 44% and 42%, respectively. The leap from November's 59% to December's robust figures reflects an upward trajectory, as the city transitions into its summer season. For those looking to enjoy the outdoors, this month heralds the arrival of longer, sun-kissed days, making it an ideal time to visit and soak up the vibrant atmosphere.
In Gualeguaychú, Argentina, the daylight duration experiences a rhythmic ebb and flow throughout the year, peaking in the summer months. December, alongside January, stands out with 14 hours of daylight, encapsulating the essence of summer and inviting vibrant outdoor festivities. As the year transitions towards autumn, daylight gradually diminishes, dropping to 12 hours in March and further to 10 hours by May. The trend then shifts again; as winter recedes, daylight starts to extend from 9 hours in June back to 11 hours by September and gently climbs back to the summer highs. This cycle not only highlights the beauty of Gualeguaychú's changing seasons but also underscores the significance of light as a vital element in daily life and cultural celebrations.
As December arrives in Gualeguaychú, Argentina, the winds remain gently constant, with an average speed of 3.4 m/s (8 mph). This slight dip from November’s 3.9 m/s (9 mph) suggests a smooth transition into summer, reflecting a trend of relatively stable gusts throughout the year. Notably, wind speeds have fluctuated only modestly, peaking in September at 4.0 m/s (9 mph) and maintaining a comfortable range between 3.1 m/s (7 mph) and 3.7 m/s (8 mph) during the warmer months. As the festive spirit of December fills the air, the consistent breezes undoubtedly enhance the charm of this vibrant city, making it an inviting destination for both locals and visitors alike.
Weather in Gualeguaychu varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Gualeguaychu, focusing on differences in temperature, rainfall, humidity, and UV levels.
In December, the weather is characterized by a range of temperatures with a minimum of 9°C (49°F), an average of 24°C (75°F), and a maximum that can reach up to 39°C (102°F). The month experiences a fair amount of precipitation, totaling 108 mm (4.3 in) over about 7 days, combined with relatively high humidity at 63%.
In contrast, January sees slightly warmer conditions, with minimum temperatures rising to 13°C (55°F), an average of 25°C (78°F), and maximum temperatures peaking at 42°C (107°F). Precipitation increases to 120 mm (4.7 in) over the same span of 7 days, but humidity decreases to 54%. This shift results in a hotter and more humid start to the year. For a detailed look at January weather, visit Gualeguaychu weather in January.
In December, temperatures range from a minimum of 9°C (49°F) to a maximum of 39°C (102°F), with an average temperature of 24°C (75°F). This month experiences about 108 mm (4.3 in) of rainfall over 7 days, contributing to a humidity level of 63%. In contrast, February offers slightly cooler temperatures with a minimum of 10°C (50°F) and a maximum of 36°C (98°F), while maintaining the same average temperature of 24°C (75°F). Additionally, February sees a decrease in precipitation, totaling 95 mm (3.7 in) over the same number of rainy days, resulting in a marginally lower humidity of 61%. For more details on the weather in February, you can check out this link: Gualeguaychu weather in February.
December and March both feature warm temperatures, but December is generally hotter, with maximums reaching up to 39°C (102°F) compared to March’s peak of 36°C (98°F). The average temperature in December is also slightly higher at 24°C (75°F), while March averages around 22°C (71°F). In terms of precipitation, December has slightly more rainfall at 108 mm (4.3 in), though both months experience rain on about seven days. Humidity levels are comparable, with December at 63% and March slightly higher at 69%. For more detailed meteorological insights, you can check Gualeguaychu weather in March.
In December, temperatures in Gualeguaychú can soar, with averages around 24°C (75°F) and highs reaching up to 39°C (102°F), making it significantly warmer than April. The month sees an average of 108 mm (4.3 in) of precipitation over about 7 days, accompanied by a humidity level of 63%. In contrast, April experiences milder temperatures, with an average of 19°C (67°F) and a maximum of 36°C (97°F). Precipitation is also lower at 91 mm (3.6 in) over 5 days, but the humidity rises to 79%. For more detailed information about Gualeguaychú’s weather in April, you can visit Gualeguaychu weather in April.
When comparing the weather in December and May, notable differences emerge. December boasts a much warmer climate with temperatures ranging from a minimum of 9°C (49°F) to an average of 24°C (75°F) and highs reaching up to 39°C (102°F). The humidity is relatively moderate at 63%, and it experiences significant rainfall, totaling 108 mm (4.3 in) over about 7 days. In contrast, May presents a cooler atmosphere, with temperatures dropping to a minimum of 1°C (34°F), an average of 15°C (59°F), and a maximum of 28°C (83°F). Although precipitation is less at 83 mm (3.3 in) over 6 days, the humidity rises to 85%, creating a damp and chilly environment. For more specific insights about weather in May, you can visit Gualeguaychu weather in May.
In December, the weather is characterized by significantly warmer temperatures, with minimums around 9°C (49°F) and maximums reaching up to 39°C (102°F), resulting in a hot average of 24°C (75°F). The month sees a total precipitation of 108 mm (4.3 in) over 7 days and a humidity level of 63%, creating a warm and occasionally wet environment. In contrast, June experiences much cooler temperatures, with a minimum of -1°C (31°F) and a maximum of 27°C (80°F). The average temperature is a mild 12°C (54°F), and the month has lower precipitation at 61 mm (2.4 in) over the same number of days, but higher humidity at 82%. For more detailed information, check out Gualeguaychu weather in June.
December and July present striking contrasts in weather conditions. December boasts warmer temperatures with a minimum of 9°C (49°F), averaging 24°C (75°F), and soaring to a maximum of 39°C (102°F). It also experiences higher precipitation, totaling 108 mm (4.3 in) over 7 days, while maintaining a humidity level of 63%. In contrast, July is much cooler, with a minimum of -3°C (28°F), an average of 11°C (53°F), and a maximum that reaches 28°C (82°F). The month also sees less rainfall, with 64 mm (2.5 in) across the same number of days, accompanied by slightly higher humidity at 69%. For more details, you can check Gualeguaychu weather in July.
When comparing the weather in December and August, notable differences emerge. December experiences warmer temperatures, with a minimum of 9°C (49°F) and a maximum reaching up to 39°C (102°F), resulting in an average temperature of 24°C (75°F). In contrast, August features cooler conditions, with temperatures ranging from a minimum of -1°C (31°F) to a maximum of 28°C (83°F) and an average of just 13°C (56°F). Additionally, December sees more precipitation, totaling 108 mm (4.3 in) over 7 days, whereas August has less rainfall at 74 mm (2.9 in) over 6 days. Interestingly, the humidity levels are quite similar, with December at 63% and August slightly higher at 65%. For more details on August weather, check out Gualeguaychu weather in August.
In comparing the weather between December and September, we see a significant difference in temperature. December boasts a range from a minimum of 9°C (49°F) to a scorching maximum of 39°C (102°F), with an average temperature of 24°C (75°F). In contrast, September tends to be much cooler, with temperatures ranging from a chilly 1°C (34°F) to a comfortable maximum of 32°C (89°F), averaging around 16°C (60°F). Additionally, both months experience similar precipitation levels, with December receiving 108 mm (4.3 in) of rain over 7 days, while September has a slightly lower 97 mm (3.8 in) over the same number of days. Humidity is also notably different, with September at 70%, making it feel damp and cool, compared to December's 63%, which can feel oppressively warm. For more insights on September weather, check Gualeguaychu weather in September.
In comparing the weather between December and October, we see a distinct contrast in temperatures and precipitation patterns. December experiences warmer temperatures, with a minimum of 9°C (49°F) and an average high of 39°C (102°F), while October is cooler, with a minimum of 4°C (40°F) and a maximum of 36°C (98°F). Precipitation levels are fairly similar, with December receiving 108 mm (4.3 in) over 7 days, compared to October’s 96 mm (3.8 in) over 8 days. Interestingly, both months share the same humidity level of 63%, but December's higher temperatures make it feel noticeably more intense. For detailed insights on October's weather conditions, you can visit Gualeguaychu weather in October.
In comparing the weather between November and December, December exhibits slightly warmer temperatures, with an average of 24°C (75°F) compared to November's 22°C (71°F). Both months experience maximum temperatures reaching up to 39°C (102°F), while December sees a minor increase in minimum temperature, averaging 9°C (49°F) versus November's 8°C (46°F). Precipitation levels also rise in December, with 108 mm (4.3 in) of rainfall over 7 days, compared to November's 62 mm (2.5 in) over 6 days. Humidity remains relatively consistent, with December at 63% and November at 60%. For more detailed insights on November weather, check out Gualeguaychu weather in November.
December in Gualeguaychú brings a vibrant shift as the warmth of summer settles in, characterized by higher temperature averages compared to other months. With a maximum of 39°C (102°F), the days can be quite steamy, though the humidity at 63% adds to the tropical feel that many find invigorating. This month also experiences some rainfall, with 7 days recording precipitation, totaling 108 mm (4.3 in), which helps keep the lush greenery vibrant. As visitors and locals alike embrace the heat and humidity, December marks the beginning of an exciting season in Gualeguaychú, perfect for outdoor festivities and enjoying nature. For a deeper understanding of what to expect throughout the year, check out Gualeguaychu Climate.