Montevideo Weather in August

August in Montevideo typically sees daytime highs of 17°C (63°F) and nighttime lows of 9°C (48°F). Rainfall is also possible this month, so it's worth packing an umbrella. It falls within the winter season.

Rainfall in Montevideo in August

Records from the past 30 years suggest around 9 days of rain, with 100 mm (3.9 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 August

In August, Montevideo sees moderate temperatures, with highs of 17°C (63°F). Nights drop to around 9°C (48°F). During August, you'll experience the winter season. The difference between afternoon and evening temperatures is usually noticeable. Nights fall to 9°C (48°F), which is cold enough to feel it indoors too. A good thick duvet makes all the difference for a comfortable night's sleep.

Sunshine in Montevideo in August

The month experiences a moderate amount of sunlight, with 165 hours of sunshine. This provides a nice balance between sunshine and clouds.

Wind Speed in Montevideo in August

August has wind speeds averaging 5 m/s (10 knots). You can expect gentle to moderate winds that move small trees and make flags wave steadily on typical days. Conditions typically range from light breezes to moderate winds.

Average water temperature in August

With water temperatures around 12°C (54°F), swimming isn't really an option for most visitors. The cold sets in quickly and a wetsuit won't fully solve it.

August in Montevideo has its charm. However, if you're seeking pleasant, dry and sunny weather, our weather planner can help you explore other destinations in the world.

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

Montevideo Temperature in August

Min Temperature 9°C (48°F)  

Max Temperature 17°C (63°F)  

Water Temperature 12°C (54°F)  

Chance of Rain 30%  

Precipitation 100 mm (3.9 in)  

Rainy days 9 days  

Humidity 78%  

Windspeed 5 m/s (10 knots)  

Sunshine 165 hours  

Percentage Sunshine  

Daily Historical Temperatures

50-year average (1976-2025)

Based on our historical records, temperatures in Montevideo typically stay consistent throughout August, with daily highs averaging around 17°C (63°F). Nights are cold, with lows typically ranging from 7°C (45°F) to 9°C (48°F).

Average temperatures in August

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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 August

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Historical weather for Montevideo in August

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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Montevideo historical weather extremes in August

Our historical data for Montevideo spans 1976 to 2025, revealing these weather extremes.

• Montevideo recorded its highest August temperature of 32°C (90°F) on August 26, 2002.
• On August 1, 1991, Montevideo saw its coldest August day with temperatures maxing out at 6°C (43°F).
• The lowest overnight temperature recorded in August was -2°C (28°F) (August 21, 2007).

What to Wear in Montevideo in August

Comfortable temperatures call for an easy wardrobe in August. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. Expect heavy rainfall, so bring good rain protection and waterproof bags. The water temperature sits at about 12°C (54°F), which is too chilly for most people to enjoy swimming. Leave the swimsuit at home unless you love cold water. Bring sunglasses since you'll have some sunny periods throughout the month

What To Do in Montevideo in August

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

Swimming

5/10

Cycling

6/10

Walking

6/10

Barbeque

6/10

Camping

4/10

Outdoor sports

9/10

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.