Last updated: August 21, 2025
December in Santa Rosa, Argentina brings a mix of warmth and occasional rain, with temperatures peaking at a sizzling 38°C (101°F) and settling into an average of 23°C (73°F). Nights can be cooler, dipping to a refreshing 8°C (47°F). Visitors should prepare for 69 mm (2.7 in) of rainfall spread over about 8 days, accompanied by a moderate humidity level of 40%. This varied climate offers a unique opportunity to enjoy both sunny days and verdant landscapes, making December a vibrant time to experience the heart of Argentina.
In December, Santa Rosa, Argentina, begins to fully embrace the summer season, showcasing a delightful increase in temperatures. With a minimum of 8°C (47°F) and an average of around 23°C (73°F), days become increasingly warm and inviting. The mercury can soar to a maximum of 38°C (101°F), creating perfect conditions for outdoor activities or leisurely afternoons in the sun. This month signals a transition from the cooler months, with December's warmth hinting at the peak summer heat that follows in January and February. Embracing both comfortable and sizzling days, December in Santa Rosa is a vibrant prelude to its sun-soaked summer.
In December, Santa Rosa, Argentina experiences a notable spike in precipitation, with 69 mm (2.7 in) of rain typically falling over 8 days. This increase is evident as the city transitions from the dry spells of winter, highlighted by a mere 18 mm (0.7 in) in July, to a more replenishing late spring and early summer. The month of December not only showcases a significant recovery in rainfall amounts compared to the preceding months, but it also positions itself as a precursor to January's drier climate, where precipitation drops to 36 mm (1.4 in). This trend reflects a seasonal pattern where the higher rainfall in late spring and early summer nourishes the region, setting the stage for the hotter months ahead while providing a lush backdrop for the festive end of the year.
In Santa Rosa, Argentina, December marks the transition into the summer months, bringing with it a notable dip in humidity, which sits at a comfortable 40%. This decrease is part of a broader trend observed throughout the year; after peaking in May at 72%, the humidity steadily declines. From the lush, moist conditions of April and May, the environment shifts towards the drier months of late spring and early summer. With January's humidity slightly higher at 44%, the festive December air feels refreshing and invigorating, making it an ideal time for outdoor activities and celebrations. Overall, this seasonal fluctuation showcases Santa Rosa's strikingly diverse climate, evolving from humid to more arid conditions as the year progresses.
In Santa Rosa, Argentina, December marks a peak in UV exposure, with the UV Index soaring to 14, categorizing it as extreme, similar to its January and February counterparts. This trend indicates that residents and visitors should exercise caution, as the burn time remains a brief 10 minutes under direct sunlight. As the year progresses, the UV Index shows a gradual decline from the summer months, but December's intensity serves as a stark reminder of the importance of sun protection during the hotter season. Overall, it is crucial to stay vigilant about UV levels, especially in December's intense sun conditions. For more detailed information, visit Santa Rosa UV Index.
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As December rolls into Santa Rosa, Argentina, residents and visitors bask in a remarkable 388 hours of sunshine, marking it as the sunniest month of the year. This sunny peak contrasts sharply with the winter months, where daylight diminishes, dropping to a mere 211 hours in June. It's fascinating to observe how daylight begins to steadily increase after the colder months, culminating in the vibrant warmth of December. Following a pattern, the year sees a gradual build-up of sunshine, particularly evident in the transition from November's 349 hours to December's brilliance. This delightful surge not only welcomes summer, but also ushers in the lively festivities of the season, painting the city in a golden glow that invites everyone to enjoy the beauty of Santa Rosa's abundant sunshine.
In Santa Rosa, Argentina, the likelihood of sunny weather in December rests at 62%, reflecting a trend that showcases a generally bright disposition during the summer months. As the year unfolds, there's a notable increase in sun hours, peaking in October at 74%. Following this high, December maintains a respectable probability of sunshine, close to the sunny averages seen in the preceding months like April and November, which are at 71% and 63%, respectively. This trend indicates that while December may bring slightly fewer sunny days compared to its neighboring months, it still offers plenty of opportunities to bask in the warm sunlight typical of the Argentine summer.
In Santa Rosa, Argentina, December heralds the peak of daylight with an impressive 14 hours of sunshine, mirroring the longer days of November. As the year progresses from summer into late spring, a gradual decrease in daylight is observed, reaching its lowest point during the winter months of June and July with just 9 hours. From August onward, daylight begins to extend again, creating a rhythmic cycle that showcases the region's diverse climatic seasons. This flow of daylight not only shapes daily life but also invites residents and visitors alike to embrace the vibrant outdoor activities that flourish under the summer sun. The consistency of 14 hours in both December and January underlines the warm and inviting atmosphere that characterizes the festive season in Santa Rosa.
As December arrives in Santa Rosa, Argentina, the wind begins to whisper a gentle farewell to spring. With an average speed of 3.0 m/s (7 mph), the breezes are slightly calmer than earlier months, reflecting a seasonal shift towards the stillness of summer. Compared to November's 3.4 m/s (8 mph) winds, this decrease hints at the city's transition into the warmer, more tranquil days ahead. Interestingly, December's winds remain consistent with the calm experienced through mid-year, suggesting a harmonious relationship between temperature and wind patterns. Overall, the month serves as a bridge, gently ushering in the sultry summer while still echoing the refreshing breezes of autumn.
Weather in Santa Rosa varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Santa Rosa, focusing on differences in temperature, rainfall, humidity, and UV levels.
In December, the weather features a range of temperatures with a minimum of 8°C (47°F), an average of 23°C (73°F), and a maximum reaching up to 38°C (101°F). This month experiences approximately 69 mm (2.7 in) of precipitation over 8 days, accompanied by a humidity level of 40%.
In contrast, January sees a slight increase in average temperature, with a minimum of 8°C (48°F) and an average of 24°C (76°F), reaching up to a maximum of 40°C (104°F). Precipitation drops to about 36 mm (1.4 in) over 6 days, while humidity rises slightly to 44%. For more details, check out Santa Rosa weather in January.
In comparison to December, February experiences slightly cooler temperatures, with a minimum of 6°C (44°F) and a maximum of 37°C (99°F), while the average remains constant at 23°C (73°F). December's temperatures range from a minimum of 8°C (47°F) to a maximum of 38°C (101°F). Additionally, February receives less precipitation at 50 mm (2.0 in) over 5 days, compared to December's 69 mm (2.7 in) across 8 days. Notably, February also has higher humidity at 49%, making the atmosphere feel a bit more muggy than December, which has a humidity level of 40%. For more detailed insights, you can check Santa Rosa weather in February.
In December, the weather features a minimum temperature of 8°C (47°F) and an average temperature of 23°C (73°F), peaking at a maximum of 38°C (101°F). The month experiences about 69 mm (2.7 in) of precipitation over 8 days, with a humidity level around 40%. In contrast, March sees slightly cooler temperatures, with a minimum of 4°C (39°F), an average of 20°C (68°F), and a maximum of 36°C (96°F). The precipitation remains similar at 70 mm (2.7 in) but occurs over just 7 days, and humidity increases to 60%. For more details on the weather in March, you can check Santa Rosa weather in March.
When comparing the weather in December and April, there are notable differences in temperature and humidity. December boasts a more consistent warmth, with average temperatures ranging from a minimum of 8°C to a maximum of 38°C, making it considerably hotter than April, which sees temperatures from 1°C to 31°C. In terms of precipitation, December receives about 69 mm over eight days, while April experiences slightly higher rainfall of 84 mm over just six days. Additionally, the humidity in April is significantly higher at 71%, compared to December's 40%, leading to a much more comfortable atmosphere in the latter part of the year. For more detailed insights into the conditions in April, you can visit Santa Rosa weather in April.
December and May present contrasting weather patterns. In December, temperatures range from a minimum of 8°C (47°F) to a scorching maximum of 38°C (101°F), with an average of 23°C (73°F). This month experiences 69 mm (2.7 in) of precipitation over approximately 8 days, with a relatively dry humidity level of 40%. In sharp contrast, May sees much cooler temperatures, with a minimum of -3°C (28°F) and a maximum of 29°C (84°F), averaging around 12°C (54°F). The month has lower precipitation at 44 mm (1.7 in) spread across 5 days, but the humidity is noticeably higher at 72%. For a closer look at May weather specifics, visit Santa Rosa weather in May.
In December, the weather is characterized by significantly warmer temperatures, with minimums reaching 8°C (47°F) and maximums soaring to 38°C (101°F). The average temperature stands at a comfortable 23°C (73°F), accompanied by moderate humidity at 40% and about 69 mm (2.7 inches) of precipitation over eight days. In contrast, June offers a much cooler climate, with temperatures ranging from a chilly -4°C (25°F) to an average of 8°C (47°F), peaking at 22°C (72°F). Rainfall is lighter in June, totaling only 24 mm (1.0 inch) across three days, and humidity is higher at 65%. The stark difference in temperatures and weather patterns makes December feel much more summery compared to the brisk conditions typical of June. For more detailed insights about June weather in Santa Rosa, you can visit Santa Rosa weather in June.
In December, temperatures soar with a minimum of 8°C (47°F) and a maximum reaching up to 38°C (101°F), offering an average of 23°C (73°F). The month experiences moderate rainfall, with around 69 mm (2.7 in) spread over eight days, accompanied by relatively low humidity at 40%. In contrast, July presents a starkly different climate, characterized by chilly temperatures ranging from a minimum of -4°C (24°F) to a maximum of 23°C (73°F), with an average of 8°C (46°F). This month sees significantly less precipitation at 18 mm (0.7 in) over just four days, while humidity levels are noticeably higher at 61%. For a detailed look at July weather patterns, visit Santa Rosa weather in July.
December and August present strikingly contrasting weather conditions. December experiences much warmer temperatures, with averages ranging from a minimum of 8°C (47°F) to a scorching maximum of 38°C (101°F), while August remains significantly cooler, featuring temperatures from -4°C (24°F) to a maximum of 29°C (84°F). Additionally, December is characterized by higher humidity at 40% and more precipitation, averaging 69 mm (2.7 in) over 8 days, whereas August sees minimal rainfall of just 11 mm (0.4 in) across only 2 days, despite a higher humidity level of 56%. For a detailed look at August weather, visit Santa Rosa weather in August.
In December, the weather is considerably warmer than in September, with average temperatures ranging from a mild 23°C (73°F) to a scorching peak of 38°C (101°F). The humidity in December is relatively low at 40%, contributing to a dry heat, whereas September experiences cooler temperatures, averaging around 13°C (56°F), with maximums reaching 32°C (91°F) and a higher humidity level of 59%. Additionally, December sees more precipitation, averaging 69 mm (2.7 in) over 8 days, compared to September's 50 mm (2.0 in) over just 5 days. For more detailed insights, you can check Santa Rosa weather in September.
When comparing the weather in December and October, noticeable differences in temperature and humidity emerge. December typically sees a much wider temperature range, with minimums around 8°C (47°F) and maximums soaring to 38°C (101°F), while October experiences cooler conditions, with temperatures ranging from a minimum of 0°C (33°F) to a maximum of 35°C (96°F). Additionally, December has lower humidity at 40% compared to October's 50%, contributing to a drier feel despite the higher temperatures. Precipitation is slightly higher in December, averaging 69 mm (2.7 in) over about 8 days, compared to October's 44 mm (1.7 in) over 7 days. For more detailed information, you can check Santa Rosa weather in October.
In comparing the weather between December and November, it is evident that December experiences slightly warmer temperatures, with a minimum of 8°C (47°F) compared to November's 5°C (41°F). The average temperature also rises to 23°C (73°F) in December, while November registers a cooler average of 20°C (68°F). Maximum temperatures highlight a similar trend, reaching up to 38°C (101°F) in December versus 36°C (97°F) in November. However, December has slightly lower precipitation, totaling 69 mm (2.7 in) over 8 days, while November sees 87 mm (3.4 in) across 9 days. Humidity levels are a bit lower in December at 40% compared to November's 45%. For more detailed insights, you can explore Santa Rosa weather in November.
December in Santa Rosa marks a vibrant transition into the summer season, with warmer temperatures and a noticeable increase in humidity compared to the cooler, drier months preceding it. As the city experiences an average temperature of 23°C (73°F), the days can heat up significantly, reaching peaks around 38°C (101°F). While precipitation is still present, with about 69 mm (2.7 in) falling over roughly 8 days, the overall atmosphere is typically characterized by sunnier skies and a more lively ambiance. This shift not only enhances the outdoor experience but also sets the perfect backdrop for holiday celebrations. For more insights on weather patterns year-round, visit Santa Rosa Climate.