Last updated: August 21, 2025
December in Termas de Rio Hondo, Argentina offers a warm and vibrant climate that invites travelers to explore its natural beauty. With maximum temperatures reaching up to 43°C (110°F) and an average temperature of 28°C (82°F), it’s a time when the sun shines brightly. However, evenings cool down to a pleasant 15°C (60°F), providing a comfortable respite. Visitors can expect about 81 mm (3.2 in) of precipitation over approximately 10 days, with humidity levels hovering around 77%. This mix of warmth and moisture creates a lush environment, perfect for relaxation and rejuvenation in the region's renowned thermal baths.
In Termas de Rio Hondo, Argentina, December ushers in summery warmth, with temperatures typically ranging from a balmy 15°C (60°F) at night to an average high of 28°C (82°F) during the day, peaking at a scorching 43°C (110°F). As the year draws to a close, one can observe a clear trend: the temperatures start to rise significantly from the cooler months of the year, reaching their zenith in December. This month acts as a vibrant transition into the height of the Southern Hemisphere’s summer, offering a perfect backdrop for visitors eager to relax in its renowned thermal waters while soaking up plenty of sunshine. Whether lounging by a pool or exploring the surrounding natural beauty, warm December days make Termas de Rio Hondo an ideal getaway for those seeking an indulgent escape.
December in Termas de Rio Hondo marks a transitional phase as the year draws to a close. With precipitation measuring 81 mm (3.2 in) over the month, rainfall is abundant but slightly lower than November's totals. This month enjoys about 10 days of rain, mirroring the consistency seen earlier in the year. Overall, December's weather continues the trend of increased precipitation observed in the spring and early summer months, providing a refreshing backdrop as temperatures rise. The gradual decline in rainfall from the peak seen in February suggests a stable yet dynamic climate, with festive holiday cheer often accompanied by the comforting rhythm of rain.
In December, Termas de Rio Hondo experiences a notable humidity level of 77%, reflecting a gradual increase as the year closes. This month's humidity is higher than the preceding months, as it transitions from the drier conditions of August (42%) and October (50%). Following the consistently rising trend seen from April (82%), through May (88%), and into the heart of summer, December sets the stage for a rich and moist atmosphere, heralding the lushness of the warmer months ahead. As the year wraps up, residents and visitors alike can expect a notable shift, with humidity levels creating a tropical feel that enhances the serene beauty of this Argentine destination.
In Termas de Rio Hondo, Argentina, December sees the UV Index soar to 15, marking it as an extreme exposure category, just like in the previous month of November. This consistent high level means that sun protection is crucial, as the burn time is only 10 minutes. Throughout the year, a noticeable trend emerges: from January to March, the UV Index peaks at extreme levels, followed by a slight decline until September, before rising sharply again in November and December. With such intensity, it’s vital for residents and visitors alike to stay vigilant and protect their skin during these sun-soaked months. For more details on safe sun exposure, check the Termas de Rio Hondo UV Index.
UV Risk Categories
In December, Termas de Río Hondo basks in an impressive 332 hours of sunshine, making it the sunniest month of the year. This radiant end-of-year gift follows a consistent upward trend in daylight hours that peaks in late spring and early summer. After a steady accumulation from January to November, where sunshine fluctuates between 223 and 311 hours, December's warm embrace of sunlight not only enhances the appeal of this charming Argentine destination but also invites visitors to indulge in its famous thermal baths and outdoor activities. As the year wraps up, the abundance of sunlight serves as a vibrant reminder of the region's alluring warmth and natural beauty.
In Termas de Rio Hondo, Argentina, December offers a 46% chance of sunny weather, aligning with the more variable conditions seen throughout the year. Notably, this month falls just below the average sunshine probability, which trends upward as the seasons shift. As summer approaches, the likelihood of clear skies begins to rise significantly in the following months, peaking in the sunnier skies of August with an impressive 95% chance. While December may not boast the highest probability for sun, it still promises the lingering warmth indicative of the region's transition into summer, setting the stage for a vibrant holiday atmosphere.
In Termas de Rio Hondo, December offers an inviting 13 hours of daylight, mirroring the sun-soaked ambiance of January and February. As summer reaches its peak in this enchanting Argentine destination, visitors can revel in extended days, ideal for soaking in the region's famous thermal baths and exploring its vibrant landscapes. The gradual decline in daylight from March's 12 hours to May's 10 hours signals the onset of winter, yet the days begin to lengthen again in August, bringing back the warm sunlight just in time for the festive season. Overall, December's generous daylight encourages both exploration and relaxation, making it a prime time to visit this picturesque locale.
As December arrives in Termas de Rio Hondo, Argentina, the wind takes on a more gentle presence, with an average speed of 2.6 m/s (6 mph). This slight dip in velocity, following a month that boasted a slightly higher rate of 3.3 m/s, indicates a calming shift as the year winds down. Interestingly, this pattern reflects a trend observed in the latter months, where wind speeds gradually increased from the earlier part of the year, peaking in October at 3.4 m/s before settling back down. As summer approaches, December's breezy yet mild conditions create a refreshing atmosphere, inviting both locals and travelers to enjoy the warmth and beauty of this Argentine destination.
Weather in Termas de Rio Hondo varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Termas de Rio Hondo, focusing on differences in temperature, rainfall, humidity, and UV levels.
In December, temperatures in Termas de Rio Hondo range from a minimum of 15°C (60°F) to a maximum of 43°C (110°F), with an average of 28°C (82°F). This month typically experiences 81 mm (3.2 in) of precipitation over approximately 10 days, accompanied by a higher humidity level of 77%. In contrast, January sees a slight increase in minimum temperatures, averaging 16°C (61°F), while the rest of the temperature profile remains similar, with maximums reaching 43°C and an average of 28°C (83°F). However, January also witnesses a rise in precipitation, totaling 96 mm (3.8 in) over 11 days, but with reduced humidity at 69%. For more detailed insights, you can visit Termas de Rio Hondo weather in January.
In December, temperatures range from a minimum of 15°C (60°F) to a maximum of 43°C (110°F), with an average temperature of around 28°C (82°F). The month sees an average precipitation of 81 mm (3.2 in) over approximately 10 days and maintains a relatively high humidity level of 77%. In contrast, February experiences slightly cooler conditions, with temperatures ranging from a minimum of 15°C (60°F) to a maximum of 42°C (108°F), and an average temperature of 26°C (80°F). However, February is wetter, with precipitation totaling 118 mm (4.6 in) also spread over 10 days, but with lower humidity at 67%. For those interested in more specifics, check out Termas de Rio Hondo weather in February.
In December, temperatures range from a minimum of 15°C (60°F) to a scorching maximum of 43°C (110°F), with an average of 28°C (82°F). The month experiences considerable humidity at 77% and receives about 81 mm (3.2 in) of precipitation over 10 days. In contrast, March sees slightly cooler temperatures, with minimums of 10°C (51°F) and maximums of 39°C (102°F), averaging around 25°C (77°F). Precipitation increases to 95 mm (3.7 in) over 11 days, while humidity is lower at 69%. For more detailed information on the March weather, visit Termas de Rio Hondo weather in March.
In December, the weather is notably warmer, featuring a temperature range between a minimum of 15°C (60°F) and a maximum of 43°C (110°F), with an average temperature of 28°C (82°F). The month also experiences significant humidity at 77% and receives about 81 mm (3.2 in) of precipitation over approximately 10 days. In contrast, April offers cooler temperatures, with a minimum of 9°C (48°F) and a maximum of 36°C (97°F), averaging 22°C (72°F). Despite having slightly less rainfall at 78 mm (3.1 in), April maintains a similar precipitation pattern, with rain on about 10 days, and a slightly higher humidity of 82%. For more specific information on conditions in April, check out Termas de Rio Hondo weather in April.
In December, the weather is characterized by much warmer temperatures, with a minimum of 15°C (60°F) and highs reaching up to 43°C (110°F), creating a hot climate ideal for outdoor activities. The month experiences an average of 28°C (82°F) and higher humidity levels at 77%, along with considerable rainfall of 81 mm (3.2 in) over approximately 10 days. In contrast, May brings cooler temperatures, with a minimum of 3°C (37°F) and an average of 18°C (64°F), peaking at 31°C (88°F). This month has lower precipitation at 40 mm (1.6 in) spread over 9 days, accompanied by slightly higher humidity levels at 88%. For more detailed insights on the weather in May, you can refer to Termas de Rio Hondo weather in May.
When comparing the weather in December and June, notable differences emerge. December experiences much warmer temperatures, with a minimum of 15°C (60°F) and a maximum reaching up to 43°C (110°F), compared to June's cooler range of 2°C (36°F) to 31°C (87°F). Additionally, December is relatively wetter, with 81 mm (3.2 in) of precipitation over 10 days, whereas June sees only 12 mm (0.5 in) over just 4 days. Humidity levels remain fairly consistent between the two months, with December at 77% and June slightly higher at 78%. For more detailed information, check out Termas de Rio Hondo weather in June.
December and July present starkly contrasting weather conditions. In December, temperatures soar with a minimum of 15°C (60°F) and can peak at a sweltering 43°C (110°F), accompanied by high humidity levels of 77% and significant precipitation of 81 mm over about 10 days. In contrast, July experiences much cooler temperatures, with minimums dipping to 0°C (31°F) and maximums reaching 32°C (89°F). The average temperature is a mild 14°C (58°F), and it sees considerably less rainfall at just 7 mm over 2 days, along with a lower humidity level of 55%. For more details on July weather, you can check Termas de Rio Hondo weather in July.
December in Termas de Rio Hondo presents a stark contrast to August, showcasing a much warmer climate. With temperatures ranging from a minimum of 15°C (60°F) to a maximum of 43°C (110°F), the month averages a balmy 28°C (82°F). Additionally, December is characterized by increased humidity at 77% and more frequent rainfall, totaling 81 mm (3.2 inches) over about 10 days. In comparison, August is significantly cooler, with temperatures dipping to a minimum of 2°C (36°F) and averaging only 17°C (64°F), with a maximum of 38°C (100°F). Precipitation is minimal in August, with just 2 mm (0.1 inches) falling on only 1 day and lower humidity levels of 42%. For a more detailed view, you can check the Termas de Rio Hondo weather in August.
December and September present contrasting weather patterns. In December, temperatures can soar with a minimum of 15°C (60°F) and an average high of 43°C (110°F), accompanied by high humidity at 77%. This month also sees considerable precipitation, totaling 81 mm (3.2 in) over about 10 days, making it a much wetter and more humid time of year. In contrast, September boasts cooler temperatures, with a minimum of 5°C (42°F), a pleasant average of 21°C (70°F), and maximum highs reaching 40°C (105°F). The month is much drier, receiving only 18 mm (0.7 in) of precipitation across 3 days and with a lower humidity level of 52%. For more details on this month's weather, check out Termas de Rio Hondo weather in September.
In comparing the weather between October and December, notable differences emerge. October typically experiences cooler temperatures, with a minimum of 9°C (49°F), an average of 24°C (76°F), and a maximum of 44°C (111°F). The month sees moderate precipitation of 42 mm (1.6 in) over about 7 days, accompanied by a lower humidity level of 50%. In contrast, December warms up significantly, boasting a minimum temperature of 15°C (60°F), an average of 28°C (82°F), and a maximum reaching 43°C (110°F). The precipitation also increases to 81 mm (3.2 in) spread over 10 days, coupled with higher humidity at 77%. For more detailed insights into the weather dynamics, you can check Termas de Rio Hondo weather in October.
In comparing the weather between December and November, December shows a slightly warmer trend with an average temperature of 28°C (82°F) compared to November's 26°C (80°F). The maximum temperature in December reaches 43°C (110°F), while November can peak at 45°C (113°F). Precipitation levels remain relatively close, with December receiving 81 mm (3.2 in) over 10 days and November experiencing 85 mm (3.4 in) across 9 days. Notably, December also has higher humidity at 77%, compared to November’s 66%. For more detailed insights, you can check out Termas de Rio Hondo weather in November.
In December, Termas de Rio Hondo transforms into a vibrant, sun-soaked destination, showcasing a weather pattern that sets it apart from other months. With maximum temperatures soaring to 43°C (110°F), visitors can expect a warmth that invigorates the spirit, making it ideal for leisurely days by the thermal pools. The average temperature of 28°C (82°F) creates a pleasant backdrop, while the occasional rainfall—spanning about 10 days—ensures a lush landscape and a refreshing change in the air. The humidity at 77% adds a touch of tropical allure, making December a unique time to experience the region's rich natural thermal wonders. For a deeper insight into the weather trends throughout the year, visit Termas de Rio Hondo Climate.