Montevideo Weather in December

December in Montevideo brings high temperatures, with daytime highs of 26°C (79°F) and nights around 17°C (63°F). Quite a bit of rainfall is expected, around 81 mm (3.2 in), so pack an umbrella.

Rainfall in Montevideo in December

You can expect rain on around 10 days based on historical patterns, with 81 mm (3.2 in) average for the month. Rainfall intensity is on the higher side this month. Expect more substantial showers rather than light, passing rain.

Temperature in Montevideo in December

December is a good time to be in Montevideo. Days are perfect, reaching 26°C (79°F), with nights around 17°C (63°F). December is part of the summer season. The days can feel warmer than the evenings, so packing for both parts of the day is a good idea. With overnight lows of 17°C (63°F), evenings can feel noticeably cooler than the daytime. An extra layer is a good idea, though the cool air makes for a good night's sleep.

Sunshine in Montevideo in December

There are approximately 285 hours of sunshine this month, resulting in mostly clear days.

Wind Speed in Montevideo in December

Wind speeds average 6 m/s (12 knots) during December. At this speed, expect strong winds that make large branches move and create some resistance when walking. Since this is an average, some days have fresh winds while others have strong breezes that can make umbrellas tricky to control.

Average water temperature in December

At 22°C (72°F), the water is warm and comfortable for swimming. Most people find this temperature ideal for spending longer periods in the water.

So this is a great month to visit if you prefer dry days with pleasant temperatures.

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Check the conditions for any month of the year.

• January
• February
• March
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• May
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• August

• September
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• December

For a detailed overview over the year and the best time to visit Uruguay, check out our Montevideo's climate page.

Montevideo Temperature in December

Min Temperature 17°C (63°F)  

Max Temperature 26°C (79°F)  

Water Temperature 22°C (72°F)  

Chance of Rain 34%  

Precipitation 81 mm (3.2 in)  

Rainy days 10 days  

Humidity 70%  

Windspeed 6 m/s (12 knots)  

Sunshine 285 hours  

Percentage Sunshine  

Daily Historical Temperatures

50-year average (1976-2025)

Based on our historical records, temperatures in Montevideo typically stay consistent throughout December, with daily highs averaging around 26°C (79°F). Nights are pleasant, with lows typically ranging from 15°C (59°F) to 18°C (64°F).

Average temperatures in December

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‹ January February March April May June July August September October November December ›

Daily Historical Precipitation

50-year average (1976-2025)

Average daily rainfall for each day of the month based on long-term records.

Average precipitation in December

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‹ January February March April May June July August September October November December ›

Historical weather for Montevideo in December

Browse day-by-day weather records for Montevideo spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.

Historical weather Temperatures Precipitation

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‹ January February March April May June July August September October November December ›

Montevideo historical weather extremes in December

The extremes listed below come from historical weather data collected in Montevideo from 1976 through 2025.

• On December 26, 2013, temperatures climbed to 38°C (100°F), marking the warmest December day on record.
• The coldest December day was on December 2, 2001, with a maximum of 16°C (61°F).
• The lowest overnight temperature recorded in December was 6°C (43°F) (December 9, 1995).

What to Wear in Montevideo in December

Warm temperatures in December make for comfortable sightseeing weather. Pack breathable fabrics like cotton shirts, knee-length shorts or skirts, and comfortable walking shoes. A thin long sleeve for indoor spaces is handy. Prepare for significant rainfall with proper waterproof clothing and shoes. With water temperatures around 22°C (72°F), swimming conditions are excellent. Pack your swimsuit, goggles, and maybe some water shoes. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.

What To Do in Montevideo in December

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

9/10

Cycling

7/10

Walking

7/10

Camping

8/10

Outdoor sports

7/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit Uruguay, check out our Montevideo's climate page.

More climate data for Montevideo

Temperature Rainfall Sunshine Humidity Wind Speed Water Temp

See the full Montevideo climate overview or explore weather in Uruguay.