The 10 most alternative cities in South America
Discover South America's top 10 alternative cities! From Valparaíso's vibrant streets to La Paz's high-altitude charm and Medellín's innovative spirit.
Colonia Rosario Weather in August
August in Colonia Rosario brings moderate temperatures around 18°C (64°F) during the day, dropping to 8°C (46°F) at night, with quite a bit of rainfall expected, averaging around 86 mm (3.4 in) for the month.
Rainfall in Colonia Rosario in August
You can expect rain on roughly 8 days based on historical data, averaging 86 mm (3.4 in) for the month. The rain this month tends to fall in heavier spells rather than light drizzle. When it rains, showers can be significant.
Temperature in Colonia Rosario in August
August in Colonia Rosario sees highs of 18°C (64°F) and lows of 8°C (46°F) overnight. August is part of winter. Temperatures can feel cooler in the morning and evening, so layering is often the best approach. Nights drop to 8°C (46°F). Cold nights like these are actually great for sleeping well, as long as you have a warm enough duvet.If your ideal day consists of dry skies and pleasant temperatures, December typically offers the best circumstances for Colonia Rosario.
Colonia Rosario Temperature in August
Min Temperature
8°C (46°F)
Max Temperature
18°C (64°F)
Chance of Rain
26%
Precipitation
86 mm (3.4 in)
Rainy days
8 days
Colonia Rosario Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Colonia Rosario - and find the best time to visit.
Daily Historical Temperatures
49-year average (1976-2025)
Based on our historical records, temperatures in Colonia Rosario typically stay consistent throughout August, with daily highs averaging around 18°C (64°F). Nights are cool, with lows typically ranging from 8°C (46°F) to 10°C (50°F).
Average temperatures in August
Daily Historical Precipitation
49-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in August
Historical weather records for Colonia Rosario in August
Browse day-by-day weather records for Colonia Rosario spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Colonia Rosario historical weather extremes in August
The extremes listed below come from historical weather data collected in Colonia Rosario from 1981 through 2026.
- The hottest August day on record in Colonia Rosario reached 32°C (90°F) (August 26, 2002).
- The coldest August day was on August 1, 1991, with a maximum of 7°C (45°F).
- The lowest overnight temperature recorded in August was 0°C (32°F) (August 14, 2019).
Best Places in Uruguay in August
Find out more about the weather in Uruguay and which places have the best travel conditions in this month. See all of Uruguay in August →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Colonia Rosario in August
Pleasant temperatures in August mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Prepare for significant rainfall with proper waterproof clothing and shoes.
What To Do in Colonia Rosario in August
We rated the following activities from 1 (least suitable) to 10 (best) to do.
-
Cycling6/10 -
Walking6/10 -
Camping4/10 -
Outdoor sports9/10
Colonia Rosario 3-Day Forecast
More climate data for Colonia Rosario
See the full Colonia Rosario climate overview or explore weather in Uruguay.
Popular in August
Where to go in August - average daytime high across popular destinations.
La Pedrera
16°C (61°F) Piriápolis16°C (61°F) Montevideo17°C (63°F) Colonia del Sacramento
16°C (61°F) José Ignacio16°C (61°F) La Paloma16°C (61°F) Punta Del Diablo16°C (61°F) Punta del Este15°C (59°F) Bucket list
Need travel inspiration? Check out our bucket list articles and be inspired.
The 10 most alternative cities in South America
Carmelo is the best kept secret of Uruguay
With its natural beauty and history, Carmelo is an inviting place to visit. Enjoy nature, tranquility, authenticity, the 'wine' and activities such as cycling, walking and horse riding.
Visit the Rainbow Mountains
The Rainbow Mountain (Vinicunca) is acolored rainbow mountain that will steal your heart forever and the view from the top will take your breath away.
The 5 most tranquil retreats in the Amazon Rainforest, Brazil
Discover top sustainable lodges in the Amazon. Enjoy unique wildlife, eco-friendly stays, and immersive experiences at Anavilhanas, Cristalino, and more.