Montevideo weather in December
Temperature, sea and sunshine in December: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in December
Excellent
Best time to visit: October – April
What is the weather like in Montevideo in December?
In December, Montevideo is warm: daytime highs average 25 °C, and nights cool down to about 17 °C. The sea averages 22.0 °C – refreshing for a swim. The sun shines for around 9 hours a day. Rain falls on about 8 days, adding up to 84 mm. All in all, December is an excellent month for a holiday in Montevideo.
December compared
How the weather changes from November to January. Tap a month to open it.
| NovemberNov | DecemberDec | JanuaryJan | |
|---|---|---|---|
| Score | 89 | 90 | 94 |
| Day | 23° | 25° | 27° |
| Night | 15° | 17° | 19° |
| Sea | 20° | 22° | 24° |
| Sun | 8 h | 9 h | 9 h |
| Rain days | 8 | 8 | 7 |
More details for December
- Daylight
- 14 h 29 min05:26 – 19:54
- UV index
- 11 · extremeclear sky, noon (estimate)All months
- Muggy days
- 6 daysdew point 18 °C or moreAll months
- Wind
- 23 km/haverage daily peakAll months
- Cloud cover
- 42 %on averageAll months
- Hot days
- 3 days30 °C or moreAll months
- Time zone
- UTC−3America/Montevideo
How the score comes together
- Temperatureweight 50 %100 %
- Sunshineweight 20 %97 %
- Few rainy daysweight 30 %70 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in December
- Swimwear
- Sunscreen
- Sunglasses & sun hat
- Light, breathable clothes
- Rain jacket or umbrella
Montevideo in December: quick answers
Is Montevideo hot in December?
Warm rather than hot: in December, daytime highs in Montevideo average 25 °C and nights cool to about 17 °C. On about 3 days the thermometer climbs to 30 °C or more.
Can you swim in Montevideo in December?
Yes. In December the sea averages 22.0 °C – refreshing for a swim.
Does it rain much in Montevideo in December?
Rain falls on about 8 days, adding up to 84 mm.
Montevideo month by month
The whole year in MontevideoAll destinations: UruguayWhere to go in DecemberSea temperature in December
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences