December weather forecast and climate
Montevideo, Uruguay

Beautiful lawns and palm trees in the independence square outside the Centrally placed Salvo Palace in Montevideo, Uruguay
Beautiful lawns and palm trees in the independence square outside the Centrally placed Salvo Palace in Montevideo, Uruguay
December is the driest month with hardly 61mm (2.4") of rain, and it is an excellent time to visit Montevideo.
Highs reach to 26.5°C (79.7°F), but with the humidity at the lowest of the year, the temperatures feel much lower.
With an increase in sunshine hours and longer evenings at disposal, one can club beach outings with other fun activities and still have time for an evening concert.

What is the temperature in December in Montevideo?

The average high-temperature, in December, is 26.5°C (79.7°F), while the average low-temperature is 16.3°C (61.3°F).

How much does it rain in Montevideo in December?

In Montevideo, in December, during 6 rainfall days, typically, 84.4mm (3.3") of precipitation is accumulated.

How cold is the water in December in Montevideo?

The average seawater temperature, in December, in Montevideo, Uruguay, is 21.9°C (71.4°F). For swimming, a surface water temperature of 21.9°C (71.4°F) is not enjoyable for the majority. It is not considered safe, as controlling breathing becomes progressively more difficult as water temperature decreases below 21°C (69.8°F).
Average temperature in December - Montevideo, Uruguay
  • Average high temperature in December: 26.5°C

The warmest month (with the highest average high temperature) is January (28.4°C).
The month with the lowest average high temperature is July (15°C).

  • Average low temperature in December: 16.3°C

The month with the highest average low temperature is January (18°C).
The coldest month (with the lowest average low temperature) is July (7.2°C).

Average humidity in December - Montevideo, Uruguay
  • Average humidity in December: 67%

The month with the highest relative humidity is June (82%).
The month with the lowest relative humidity is December (67%).

Average rainfall in December - Montevideo, Uruguay
  • Average rainfall in December: 84.4mm

The wettest month (with the highest rainfall) is October (108.5mm).
The driest month (with the lowest rainfall) is June (83.1mm).

Average rainfall days in December - Montevideo, Uruguay
  • Average rainfall days in December: 6 days

Months with the highest number of rainy days are February, June, July, October and November (7 days).
Months with the lowest number of rainy days are January, March, April, May, August, September and December (6 days).

Average sea temperature in December - Montevideo, Uruguay
  • Average sea temperature in December: 21.9°C

The best month for swimming (with the highest average sea temperature) is January (24.2°C).
The coldest month (with the lowest average sea temperature) is July (11.3°C).

Average daylight in December / Average sunshine in December - Montevideo, Uruguay
  • Average daylight in December: 14.5h

The month with the longest days is December (Average daylight: 14.5h).
The month with shortest days is June (Average daylight: 9.8h).

  • Average sunshine in December: 9.2h

The month with most sunshine is January (Average sunshine: 9.5h).
The month with least sunshine is June (Average sunshine: 4.3h).

Average UV index in December - Montevideo, Uruguay
  • Average UV index in December: 12

Months with the highest UV index are January and December (UV index 12).
Months with the lowest UV index are June and July (UV index 2).

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