Last updated: August 21, 2025
Discover the December climate of Mar del Plata, Argentina, where summer sizzle meets coastal charm. With maximum temperatures soaring to 31°C (88°F) and an average of 18°C (65°F), the city invites you to bask in warm, sunny days. Evenings offer a cooler respite, dipping to a minimum of 8°C (46°F). While December experiences about 67 mm (2.6 in) of rainfall across 9 days, the humidity averages around 70%, adding a refreshing touch to the vibrant atmosphere. Embrace the beach vibes and the pleasant warmth as you explore this stunning coastal destination!
In December, Mar del Plata begins to embrace the warmth of summer, with temperatures gradually rising as the month progresses. The minimum temperature hovers around a pleasant 8°C (46°F), while the average reaches a comfortable 18°C (65°F), perfect for beach outings. Daytime highs can soar to an impressive 31°C (88°F), setting the stage for sunny adventures along the coast. As the year draws to a close, the city experiences a delightful blend of mild evenings and warm days, making it an ideal time for both locals and tourists to soak up the sun and enjoy the vibrant atmosphere.
In December, Mar del Plata experiences a moderate amount of precipitation, averaging 67 mm (2.6 in) over the course of 9 days. This marks a slight increase compared to the drier months that precede it, such as November, which recorded 70 mm but over the same number of days. Interestingly, the month serves as a transition into the wetter summer season, setting the stage for the more substantial rainfall that typically occurs in February. With December’s rainfall, residents and visitors can expect a refreshing reprieve from the warm weather, contributing to the vibrant greenery and coastal beauty of this Argentine seaside city. Overall, December’s precipitation levels reflect a consistent pattern in Mar del Plata, featuring a blend of sun and occasional showers that beautifully complement the lively atmosphere of the year-end festivities.
In Mar del Plata, Argentina, December ushers in a relatively lower humidity at 70%, providing a welcome respite from the more humid months preceding it. Following a trend seen since the start of the year, where humidity levels peaked in April and May at 79% and 80%, the coastal city begins to experience a gradual decline during the summer months. Notably, December's humidity dips below the average mid-year levels, suggesting a shift towards a more comfortable environment for both locals and visitors alike. This trend highlights a subtle seasonal transition as the year wraps up, setting the stage for the drier months ahead.
As December rolls in, Mar del Plata experiences a notable rise in UV intensity, reaching a UV Index of 13, classified as extreme. This trend highlights the city's peak sun exposure period, continuing from the preceding months where January and February also exhibited extreme levels. With a brief burn time of just 10 minutes, it's crucial for beachgoers and outdoor enthusiasts to adopt protective measures, such as applying sunscreen and wearing protective clothing. As the year transitions into the summer months, being aware of the sun's intensity can help ensure a safe and enjoyable experience under the Argentine sun. For more insights on UV exposure, visit Mar del Plata UV Index.
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December shines brightly in Mar del Plata, Argentina, with an impressive 381 hours of sunshine, marking it as the sunniest month of the year. This surge in daylight aligns perfectly with the onset of summer, contrasting sharply with the cooler, darker months of winter, where sunshine drops significantly to around 195 hours in June. As the year progresses, there is a delightful upward trend in sunshine hours, peaking in December after a notable 331 hours in November. This consistent increase from the spring months—where hours climb from 230 in May to a robust 314 in February—showcases the region's alluring seasonal rhythm. With such abundant sunlight, December is the perfect time for beachgoers and sun-seekers to immerse themselves in the vibrant atmosphere of Mar del Plata.
In Mar del Plata, December promises a pleasant chance of sunshine, with a 58% likelihood that residents and visitors alike can enjoy the warm glow of the sun. As the year draws to a close, the city transitions from the cooler months of late spring to the vibrant summer season, reflecting a notable trend of increased sunshine from the earlier months. Compared to November's 51% chance, December offers a slight boost, hinting at the beach days ahead. This upward shift is indicative of the city's overall climatic pattern, where the likelihood of sunny weather tends to rise as summer approaches, making December a delightful month for sunseekers in this beautiful coastal destination.
In December, Mar del Plata basks in 14 hours of daylight, mirroring the abundant light of the preceding month. This trend marks the peak of summer in Argentina, where daylight gradually extends from the shorter days of winter in June and July, each offering only 9 hours of sunshine. As the year progresses from October to November, daylight stretches back to 14 hours, creating a vibrant atmosphere ideal for beachgoers and outdoor activities. The cyclical pattern reflects the region's transition from the shorter, darker months of early spring to the longer, sun-soaked days of summer. Thus, December vividly illustrates the seasonal ebb and flow of light, inviting both locals and tourists to savor the warmth and splendid scenery of this coastal gem.
As December arrives in Mar del Plata, the coastal breeze softens, with an average wind speed of 5.2 m/s (12 mph). This marks a seasonal shift towards calmer conditions, especially when contrasted with the sharper winds of the preceding months. In fact, December’s winds mirror those of October, highlighting a transition from the more turbulent nature of late spring, where gusts peaked in November and even higher in May and July. This gentle wind carries a refreshing touch, inviting locals and visitors alike to embrace the vibrant beach atmosphere as the year draws to a close. As part of a broader trend, this decrease in wind speed leading into the summer months sets an ideal scene for outdoor activities along the stunning Argentine coastline.
Weather in Mar del Plata varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Mar del Plata, focusing on differences in temperature, rainfall, humidity, and UV levels.
In December, the weather typically ranges from a minimum of 8°C (46°F) to a maximum of 31°C (88°F), with an average temperature of around 18°C (65°F). The month sees approximately 67 mm (2.6 in) of precipitation over nine wet days, coupled with a humidity level of 70%. In contrast, January experiences slightly warmer temperatures, with a minimum of 11°C (53°F) and a maximum of 34°C (93°F), and an average temperature of 21°C (69°F). Precipitation decreases to 41 mm (1.6 in) across five days, while humidity rises marginally to 71%. For more detailed insights, check out Mar del Plata weather in January.
December and February in Mar del Plata showcase mild and pleasant weather, though there are notable differences between the two months. December typically experiences temperatures ranging from a minimum of 8°C (46°F) to a maximum of 31°C (88°F), with an average of 18°C (65°F). This month also sees about 67 mm (2.6 in) of precipitation over approximately 9 days, accompanied by a humidity level of around 70%.
In contrast, February boasts slightly higher temperatures, with a minimum of 11°C (52°F) and an average of 20°C (69°F), peaking at 30°C (87°F). Precipitation levels rise to 108 mm (4.2 in) over about 10 days, and humidity increases to 76%. For a more detailed overview of February weather in Mar del Plata, you can visit Mar del Plata weather in February.
In December, the weather is typically warm, with temperatures ranging from a minimum of 8°C (46°F) to a maximum of 31°C (88°F), averaging around 18°C (65°F). The month sees around 67 mm (2.6 in) of precipitation over approximately 9 days, with humidity levels at about 70%. In contrast, March presents slightly cooler conditions, with minimum temperatures of 9°C (49°F) and maximums reaching 28°C (82°F), while the average sits at 19°C (66°F). Precipitation increases to 90 mm (3.5 in) over the same number of days, and humidity rises to around 76%. For more details on the weather patterns, you can visit Mar del Plata weather in March.
In December, the weather features a warmer average temperature of 18°C (65°F) with maximums reaching up to 31°C (88°F), making it a hot month. The humidity is relatively moderate at 70%, and there are about 9 days of precipitation totaling 67 mm (2.6 in). In contrast, April presents cooler conditions with an average temperature of 17°C (62°F) and a maximum of 25°C (78°F). The humidity rises to 79%, and while it experiences a slightly higher total precipitation of 91 mm (3.6 in), it has only 8 rainy days. For those interested in more details, you can check this link: Mar del Plata weather in April.
When comparing the weather in December and May, it's clear that December is generally warmer, with temperatures ranging from a minimum of 8°C (46°F) to a maximum of 31°C (88°F), while May sees lower temperatures, with a minimum of 5°C (42°F) and a maximum of 22°C (72°F). December also tends to be drier, receiving about 67 mm (2.6 in) of precipitation over 9 days, compared to May's 53 mm (2.1 in) over 7 days. Despite December's lower humidity of 70%, May's humidity is slightly higher at 80%, contributing to a cooler and potentially more overcast atmosphere. For more detailed information on May weather, you can visit Mar del Plata weather in May.
December weather in Mar del Plata features warmer temperatures, with a minimum of 8°C (46°F) and an average high of 31°C (88°F), making it a much sunnier month compared to June. In contrast, June experiences cooler conditions, with temperatures ranging from 3°C (38°F) to a maximum of 19°C (67°F), offering a more brisk atmosphere. While both months see similar levels of precipitation—67 mm (2.6 in) in December and 63 mm (2.5 in) in June—the humidity is notably higher in June at 79%, compared to 70% in December. For more detailed weather insights, check out Mar del Plata weather in June.
When comparing the weather in December and July, notable differences emerge. December boasts warmer temperatures with a minimum of 8°C (46°F) and a maximum of 31°C (88°F), while July experiences cooler conditions, with temperatures ranging from a minimum of 2°C (36°F) to a maximum of 18°C (65°F). Precipitation levels are relatively similar, with December averaging 67 mm (2.6 in) over 9 days and July slightly higher at 72 mm (2.8 in) over 10 days. Humidity levels reflect a similar trend as well, with December at 70% and July at 74%. For more detailed information, you can check Mar del Plata weather in July.
When comparing the weather in December and August, a significant difference in temperatures is evident. December boasts a much warmer climate with minimum temperatures around 8°C (46°F) and maximums reaching up to 31°C (88°F). In contrast, August experiences cooler conditions with a minimum of 2°C (36°F) and a maximum of only 20°C (68°F). Additionally, December sees more precipitation, totaling 67 mm (2.6 in) over about 9 days, while August has less rainfall at 49 mm (1.9 in) on 7 days. Humidity also differs slightly, with December at 70% compared to 75% in August. For more details on weather specifics during this month, you can visit Mar del Plata weather in August.
December's weather is generally warmer and more humid compared to September. With temperatures ranging from a minimum of 8°C (46°F) to a maximum of 31°C (88°F), December offers an average temperature of 18°C (65°F), while September sees cooler temperatures, with a minimum of 4°C (39°F) and a maximum of 21°C (70°F) and an average of only 11°C (52°F). Both months experience similar levels of precipitation, with December receiving 67 mm (2.6 in) over 9 days and September slightly less at 60 mm (2.4 in) over 7 days. Additionally, December's humidity at 70% is lower than September's 79%, making December feel somewhat more comfortable overall. For a more detailed look at September's weather, you can visit Mar del Plata weather in September.
When comparing the weather in December and October, December generally presents warmer temperatures, with a minimum of 8°C (46°F) and an average of 18°C (65°F), reaching a maximum of 31°C (88°F). In contrast, October features cooler temperatures, with a minimum of 5°C (41°F) and an average of 13°C (56°F), peaking at 25°C (78°F). While both months experience precipitation on about nine days, December receives slightly less precipitation overall at 67 mm (2.6 in) compared to October's 84 mm (3.3 in). Additionally, December has a lower humidity level at 70%, compared to October's 76%. For more specific details about October weather, you can check Mar del Plata weather in October.
In comparing the weather of December and November, December generally offers warmer temperatures, with an average of 18°C (65°F) and a maximum reaching 31°C (88°F), compared to November's average of 16°C (61°F) and maximum of 27°C (81°F). Despite both months experiencing similar levels of precipitation, with December at 67 mm (2.6 in) and November at 70 mm (2.7 in), December tends to be slightly less humid at 70%, while November’s humidity is a bit higher at 74%. For a detailed look at November's weather characteristics, you can visit Mar del Plata weather in November.
As the festive spirit of December arrives in Mar del Plata, the weather shifts to create a warm and inviting atmosphere. With temperatures rising to a maximum of 31°C (88°F), residents and visitors alike revel in the sunshine, making it a perfect time for beach outings and outdoor activities. Unlike the cooler months, December boasts an average temperature that encourages social gatherings and exploration of the city's vibrant culture. While occasional rain may dampen a few days—amounting to about 9 days of precipitation—the overall humidity of 70% adds to the summer feel of this lively coastal city. Embrace the warmth and discover more about the region's climate at Mar del Plata Climate.