Monthly climate guide
Mar del Plata weather in December
Expect warm weather in Mar del Plata in December: afternoons reach about 23°C (74°F), while nights drop to around 15°C (59°F). Around 131 mm of rain falls over the month (wet), and skies are a mix of sun and cloud. Daytime highs are 4°C warmer than November and about the same as January.
What stands out in December
- December brings early summer to Mar del Plata — the seasons are reversed south of the equator.
- Only 2 months are warmer in Mar del Plata than December.
- Just 340 km apart, but Mar del Plata runs about 6°C cooler than La Plata this month.
- Skies are at their clearest this time of year.
Avg high
23°C
74°F
Avg low
15°C
59°F
Rainfall
131 mm
wet
Humidity
72%
relative
Sky
45%
cloud · a mix of sun and cloud
Mar del Plata weather by month
Show the monthly averages as a table
| Month | Avg high | Avg low | Rain | Humidity | Cloud cover |
|---|---|---|---|---|---|
| January | 24°C / 76°F | 17°C / 62°F | 137 mm | 72% | 47% |
| February | 24°C / 76°F | 17°C / 63°F | 126 mm | 74% | 50% |
| March | 22°C / 72°F | 16°C / 60°F | 104 mm | 76% | 51% |
| April | 19°C / 66°F | 13°C / 56°F | 126 mm | 79% | 58% |
| May | 15°C / 60°F | 11°C / 51°F | 89 mm | 83% | 63% |
| June | 12°C / 54°F | 7°C / 45°F | 68 mm | 84% | 61% |
| July | 11°C / 52°F | 6°C / 43°F | 70 mm | 85% | 63% |
| August | 12°C / 54°F | 7°C / 44°F | 83 mm | 85% | 59% |
| September | 14°C / 56°F | 8°C / 46°F | 79 mm | 82% | 58% |
| October | 16°C / 60°F | 9°C / 49°F | 104 mm | 82% | 60% |
| November | 20°C / 67°F | 12°C / 54°F | 107 mm | 77% | 50% |
| December | 23°C / 74°F | 15°C / 59°F | 131 mm | 72% | 45% |
What to pack for December
- T-shirts plus a light layer for the evening
- Comfortable trainers or sandals for long walks
- A compact umbrella or packable rain jacket
- Water-resistant shoes
Is December a good time to visit Mar del Plata?
Compare the months in the chart above to find your ideal window.
Best time to visit Mar del Plata →Other Argentina cities in December
Cite or embed this data
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Mar del Plata weather in December. WeatherCompare, 2026 (NASA POWER / ERA5, 2011–2020 monthly averages). https://weathercompare.eu/weather/argentina/mar-del-plata/december
<a href="https://weathercompare.eu/weather/argentina/mar-del-plata/december">Mar del Plata weather in December</a> (WeatherCompare)
<iframe src="https://weathercompare.eu/embed/argentina/mar-del-plata" width="300" height="160" style="border:0;border-radius:12px" loading="lazy" title="Mar del Plata weather in December"></iframe> <p style="font-size:12px"><a href="https://weathercompare.eu/weather/argentina/mar-del-plata/december">Mar del Plata weather in December</a> – WeatherCompare</p>
Mar del Plata in December: quick answers
Is December a good time to visit Mar del Plata?
December is one of the wetter months in Mar del Plata, with about 131 mm of rain. You can still go: pack a rain jacket and keep plans flexible.
How warm is Mar del Plata in December?
Average highs are about 23°C (74°F) and average lows about 15°C (59°F), based on 10 years of daily data.
Does it rain a lot in Mar del Plata in December?
Mar del Plata typically gets around 131 mm of rain in December — wet.
Figures are long-term averages for the area around Mar del Plata (NASA POWER / ERA5, 2011–2020), not a forecast for a specific year. For upcoming days, see the live multi-source forecast.