Monthly climate guide
Montevideo weather in December
With highs near 25°C (77°F) and lows around 18°C (65°F), December feels warm in Montevideo. Rainfall averages about 105 mm (wet) and the sky is a mix of sun and cloud. Daytime highs are 3°C warmer than November and about the same as January.
What stands out in December
- December brings early summer to Montevideo — the seasons are reversed south of the equator.
- Skies are at their clearest this time of year.
- Only 2 months are warmer in Montevideo than December.
Avg high
25°C
77°F
Avg low
18°C
65°F
Rainfall
105 mm
wet
Humidity
71%
relative
Sky
43%
cloud · a mix of sun and cloud
Montevideo weather by month
Show the monthly averages as a table
| Month | Avg high | Avg low | Rain | Humidity | Cloud cover |
|---|---|---|---|---|---|
| January | 26°C / 79°F | 20°C / 68°F | 110 mm | 72% | 45% |
| February | 26°C / 78°F | 20°C / 69°F | 94 mm | 74% | 48% |
| March | 24°C / 74°F | 18°C / 65°F | 93 mm | 75% | 42% |
| April | 21°C / 69°F | 16°C / 61°F | 133 mm | 78% | 51% |
| May | 17°C / 63°F | 13°C / 55°F | 85 mm | 82% | 58% |
| June | 14°C / 57°F | 10°C / 49°F | 89 mm | 83% | 56% |
| July | 12°C / 54°F | 8°C / 47°F | 100 mm | 85% | 59% |
| August | 14°C / 58°F | 9°C / 49°F | 104 mm | 84% | 57% |
| September | 16°C / 60°F | 11°C / 51°F | 103 mm | 82% | 54% |
| October | 18°C / 65°F | 13°C / 56°F | 102 mm | 81% | 56% |
| November | 22°C / 71°F | 16°C / 60°F | 94 mm | 75% | 46% |
| December | 25°C / 77°F | 18°C / 65°F | 105 mm | 71% | 43% |
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 Montevideo?
Compare the months in the chart above to find your ideal window.
Best time to visit Montevideo →Other Uruguay cities in December
Cite or embed this data
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Montevideo weather in December. WeatherCompare, 2026 (NASA POWER / ERA5, 2011–2020 monthly averages). https://weathercompare.eu/weather/uruguay/montevideo/december
<a href="https://weathercompare.eu/weather/uruguay/montevideo/december">Montevideo weather in December</a> (WeatherCompare)
<iframe src="https://weathercompare.eu/embed/uruguay/montevideo" width="300" height="160" style="border:0;border-radius:12px" loading="lazy" title="Montevideo weather in December"></iframe> <p style="font-size:12px"><a href="https://weathercompare.eu/weather/uruguay/montevideo/december">Montevideo weather in December</a> – WeatherCompare</p>
Montevideo in December: quick answers
Is December a good time to visit Montevideo?
December is one of the wetter months in Montevideo, with about 105 mm of rain. You can still go: pack a rain jacket and keep plans flexible.
How warm is Montevideo in December?
Average highs are about 25°C (77°F) and average lows about 18°C (65°F), based on 10 years of daily data.
Does it rain a lot in Montevideo in December?
Montevideo typically gets around 105 mm of rain in December — wet.
Figures are long-term averages for the area around Montevideo (NASA POWER / ERA5, 2011–2020), not a forecast for a specific year. For upcoming days, see the live multi-source forecast.