Last updated: August 21, 2025
December in La Rioja, Argentina, is characterized by warm to hot temperatures, with daily highs reaching up to 42°C (108°F) and an average of 27°C (80°F). The evenings provide a welcome coolness, with minimum temperatures dipping to 12°C (54°F). While the month sees about 77 mm (3.0 in) of rainfall over approximately 7 days, the overall humidity remains around 61%, creating a tropical feel in this sun-drenched region. December offers an enticing blend of summer heat and occasional showers, making it a vibrant time to explore La Rioja's stunning landscapes.
In December, La Rioja, Argentina, experiences a delightful summer climate characterized by increasingly warm temperatures. With minimums averaging around 12°C (54°F), the days gradually warm up, reaching averages of 27°C (80°F) and peaking at a sizzling 42°C (108°F). This gradual rise from the cooler months leads to a strong feeling of summer, making December perfect for outdoor activities and exploration. As compared to earlier months, the region sees a significant increase in heat, with temperatures consistently climbing, suggesting a vibrant, sun-soaked atmosphere ideal for enjoying the breathtaking landscapes of this unique Argentine province.
In La Rioja, Argentina, December marks a notable transition in precipitation patterns, featuring an increase in rainfall compared to the drier months that precede it. With an average of 77 mm (3.0 in) of rain spread over 7 days, December experiences one of the highest precipitation levels of the year. This uptick follows a relatively dry spell, where June and July saw minimal rainfall, with just 5 mm (0.2 in) and 2 mm (0.1 in) respectively. The trend reveals that as the year draws to a close, conditions become more humid, paving the way for a lush start to the summer season. This shift from the parched winter months enhances the landscape's vibrancy, making December a crucial month for agriculture and natural growth in the region.
In La Rioja, Argentina, December brings a mild humidity level of 61%, marking a slight dip from the higher levels experienced in the preceding months. As the year comes to a close, a noticeable trend emerges: the region experiences a gradual increase in humidity from the drier winter months of July and August, where figures plummet to around 42-57%, to the more humid spring and early summer months. This December humidity is reflective of the spring transition, as the lush landscape thrives and prepares for the warmth of summer. Overall, the month stands out as a comfortable prelude to the hotter, more humid months ahead, while still maintaining a gentle balance in moisture that enhances the area's vibrant natural beauty.
In December, La Rioja, Argentina, experiences one of its highest UV Index levels, peaking at 15 in the extreme category, which means you can burn in just 10 minutes of unprotected sun exposure. This follows a trend observed over the previous months, with November also presenting an extreme UV Index of 14. As the year moves from the more moderate levels in late spring and early winter, the need for sun protection becomes increasingly urgent through the summer. It's essential for residents and visitors alike to take precautions, particularly during this peak season. For more insights on UV levels throughout the year, check out the detailed information at La Rioja UV Index.
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December in La Rioja, Argentina, brings a delightful culmination to the year with 372 hours of sunshine, showcasing the region's abundant natural light. This month stands out as a vibrant peak, following a gradual increase in sunshine hours from 305 hours in February to a radiant 359 hours in November. As the summer reaches its zenith, December's sun-soaked days seem to embody the essence of warmth and vitality. With longer daylight hours and a dazzling sky, it's the perfect time to explore La Rioja's breathtaking landscapes and immerse yourself in its rich culture, making December an inviting month for both locals and visitors alike.
In La Rioja, Argentina, December marks the beginning of summer, yet the chance of sunny weather drops to 59%. This is a noticeable decline compared to the preceding months, particularly November's optimistic 74%. As we look at the yearly patterns, it's evident that the likelihood of sun peaks in the colder months of July and August, where it soars to 83% and 93%, respectively. Meanwhile, spring months like April and May maintain a respectable 67% and 69% chance of clear skies. While December may not boast the sunniest prospects, it still holds the promise of warmth and longer days, inviting both locals and visitors to savor the vibrant summer atmosphere.
In La Rioja, Argentina, December marks a continuation of the long, sun-drenched days characteristic of the Southern Hemisphere's summer. With 13 hours of daylight, this month mirrors the brightness of January and February, as the region basks in the warmth of summer. Following a gradual decline from March through May, where daylight reduces to 10 hours, the light begins to increase again in August and September, settling back at 11 to 12 hours before finally reaching its summer peak once more. This yearly cycle beautifully illustrates La Rioja's vibrant seasonal shifts, where daylight plays a vital role in shaping the rhythm of life and activities in this sun-kissed landscape.
As December settles in La Rioja, Argentina, the average wind speed hovers at a gentle 2.4 m/s (5 mph), reflecting a tranquil end to the year. This consistent breeze is part of a broader pattern, where wind speeds gradually increase from the start of spring through early summer. Notably, the months of September through November witness a slight uptick, reaching 2.7 m/s (6 mph), hinting at a refreshing transition in the air. December’s mild winds, while slightly lower than the previous months, maintain a comforting presence, perfectly complementing the warm summer days. This blend of consistent breezes and warm sunshine creates an inviting atmosphere, making it a delightful time to explore the scenic landscapes of La Rioja.
Weather in La Rioja varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in La Rioja, focusing on differences in temperature, rainfall, humidity, and UV levels.
December and January present relatively similar weather patterns, but with some notable differences. December experiences a minimum temperature of 12°C (54°F) and peaks at 42°C (108°F), while January sees slightly warmer nights with a minimum of 15°C (58°F) and a high of 41°C (107°F). Precipitation is similar in both months, with December receiving 77 mm (3.0 in) over 7 days and January slightly less at 71 mm (2.8 in) over 8 days. Humidity also increases marginally from 61% in December to 63% in January, making January feel a bit more humid despite its similar average temperature of 27°C (82°F). For more details, you can check La Rioja weather in January.
In December, the weather is typically warmer, with average temperatures reaching around 27°C (80°F) and maximums peaking at 42°C (108°F). This month also sees a fair amount of rainfall, with 77 mm (3.0 in) spread over 7 days and a humidity level of 61%. In contrast, February offers slightly milder temperatures, with a minimum of 14°C (57°F) and an average of 25°C (78°F), though maximums remain close at 40°C (104°F). Precipitation is slightly lower at 72 mm (2.9 in) over 8 days, accompanied by increased humidity at 66%. For more details on February's climate, you can check La Rioja weather in February.
December and March exhibit distinct weather patterns, reflecting the transition between seasons. In December, temperatures range dramatically from a minimum of 12°C (54°F) to a scorching maximum of 42°C (108°F), with an average of 27°C (80°F). The month sees around 77 mm (3.0 in) of precipitation over approximately 7 days, coupled with a humidity level of 61%. In contrast, March experiences slightly cooler temperatures, with a minimum of 10°C (51°F) and a maximum of 38°C (100°F), averaging 23°C (74°F). Precipitation is slightly lower at 73 mm (2.9 in), occurring over 8 days, and humidity is higher at 68%. For more details on the weather in March, you can visit La Rioja weather in March.
December and April present distinctly different weather patterns. In December, temperatures range from a minimum of 12°C (54°F) to a scorching maximum of 42°C (108°F), with an average temperature of 27°C (80°F). This month experiences 77 mm (3.0 in) of precipitation over approximately 7 days, accompanied by a humidity level of 61%. In contrast, April features milder temperatures, with a minimum of 7°C (45°F), an average of 20°C (69°F), and a maximum of 34°C (93°F). With only 33 mm (1.3 in) of rain falling over 6 days and a higher humidity of 83%, April offers a cooler and more comfortable atmosphere. For more details on April weather, visit La Rioja weather in April.
In December, the weather is significantly warmer, with temperatures ranging from a minimum of 12°C (54°F) to a scorching maximum of 42°C (108°F), and an average temperature of 27°C (80°F). This month experiences higher precipitation, totaling 77 mm (3.0 in) over approximately 7 days, coupled with a humidity level of 61%. In contrast, May presents a much cooler climate, with temperatures peaking at 28°C (83°F) and dipping to a minimum of 2°C (36°F). The average temperature for this month is 15°C (60°F), and it sees considerably less rainfall at 23 mm (0.9 in) over 5 days, although the humidity is higher at 82%. For more detailed insights on May weather, you can visit La Rioja weather in May.
In December, the weather in La Rioja is characterized by high temperatures, ranging from a minimum of 12°C (54°F) to a scorching maximum of 42°C (108°F), with an average temperature of 27°C (80°F). The month sees a moderate amount of rainfall, with 77 mm (3.0 in) over about 7 days, and a relative humidity of 61%. On the other hand, June presents a stark contrast, featuring much cooler conditions, with temperatures dipping as low as -1°C (31°F) and peaking at a maximum of 24°C (76°F), averaging only 11°C (52°F). Precipitation is minimal, totaling just 11 mm (0.4 in) over 2 days, accompanied by slightly higher humidity at 72%. For more detailed weather insights, refer to La Rioja weather in June.
December and July present stark contrasts in weather conditions. In December, temperatures soar with a minimum of 12°C (54°F) and can peak at a scorching 42°C (108°F), offering an average warmth of around 27°C (80°F). This month also experiences relatively high humidity at 61% and receives about 77 mm (3.0 in) of precipitation over roughly 7 days. In contrast, July brings a significant chill, with temperatures plunging to a minimum of -2°C (29°F) and reaching a moderate maximum of 25°C (78°F). The average temperature sits at a brisk 11°C (51°F), with minimal precipitation of only 5 mm (0.2 in) across just 1 day and slightly lower humidity at 57%. For a deeper look at the July weather, you can refer to La Rioja weather in July.
December weather in La Rioja is characterized by significantly warmer temperatures, with a minimum of 12°C (54°F) and an average high reaching up to 42°C (108°F). In contrast, August experiences much cooler conditions, with temperatures ranging from a minimum of 0°C (33°F) to a maximum of 35°C (95°F). Additionally, December is marked by higher humidity at 61% and more precipitation, averaging 77 mm over 7 days, while August is dry, receiving only 2 mm of rain without any rainy days. For more details on August weather, you can check out La Rioja weather in August.
December and September present quite different weather experiences. In December, temperatures range from a minimum of 12°C (54°F) to a scorching maximum of 42°C (108°F), with an average of 27°C (80°F). The humidity is relatively high at 61%, and the month sees about 77 mm (3.0 in) of precipitation over approximately 7 days. In contrast, September offers cooler temperatures, with highs reaching 38°C (100°F) but an average of only 18°C (65°F) and a minimum of 2°C (35°F). Precipitation is minimal during this month, at just 20 mm (0.8 in) over about 3 days, and humidity levels are lower at 51%. For a detailed look at September's climate, you can refer to La Rioja weather in September.
In comparing the weather between December and October, December tends to be significantly warmer, featuring a minimum temperature of 12°C (54°F) and an average high of 42°C (108°F), while October has a cooler minimum of 7°C (45°F) with a maximum of 40°C (104°F). December also experiences more humidity, at 61%, compared to October's 47%. Additionally, precipitation levels rise in December with about 77 mm (3.0 in) over 7 days, whereas October sees only 34 mm (1.3 in) over 5 days. For a detailed look at the specifics, you can check La Rioja weather in October.
In comparing the weather of December and November, December tends to be slightly warmer, with average temperatures reaching 27°C (80°F) compared to November's 25°C (77°F). The maximum temperature also rises to 42°C (108°F) in December, just edging out November's high of 41°C (106°F). While December experiences more precipitation with 77 mm (3.0 in) over 7 days, November has less rain, totaling 46 mm (1.8 in) across 6 days. Humidity levels are slightly higher in December at 61%, compared to November's 58%. For more details, you can check La Rioja weather in November.
As December arrives in La Rioja, the weather transforms into a vibrant tapestry of warmth and humidity, starkly contrasting the cooler months preceding it. With average temperatures climbing to a balmy 27°C (80°F), residents and visitors alike can revel in the sunshine, though the occasional precipitation—averaging about 77 mm—adds a refreshing touch. The humidity levels hover around 61%, creating a tropical feel that sets December apart from the drier seasons. This perfect blend of heat and moisture not only enhances the region's natural beauty but also invites exploration. For a deeper understanding of how La Rioja's climate varies throughout the year, be sure to check out La Rioja Climate.