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Rosario Weather in May
May in Rosario brings pleasant temperatures, with highs of 20°C (68°F) and nights dropping to 10°C (50°F). Rainfall is on the higher side this month, averaging around 78 mm (3.1 in), so keep a rain jacket handy.
Rainfall in Rosario in May
On average, there are about 8 days with rain during this month, averaging 78 mm (3.1 in). Individual showers can be quite heavy this month. A proper umbrella or rain jacket is worth having.
Temperature in Rosario in May
May is a good time to be in Rosario. Days are excellent, reaching 20°C (68°F), with nights around 10°C (50°F). The difference between afternoon and evening temperatures is usually noticeable. Nights drop to around 10°C (50°F), which is noticeably cooler than the daytime. A light jacket for the evening is a sensible addition, and the cool nights tend to make sleeping comfortable.If you're a fan of comfortable temperatures and drier conditions, May is a great time to visit.
Rosario Temperature in May
Min Temperature
10°C (50°F)
Max Temperature
20°C (68°F)
Chance of Rain
25%
Precipitation
78 mm (3.1 in)
Rainy days
8 days
Rosario Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Rosario - and find the best time to visit.
Daily Historical Temperatures
49-year average (1976-2025)
Based on our historical records, temperatures in Rosario typically drop from around 20°C (68°F) at the start of May to approximately 16°C (61°F) by the end. Nights are cool, with lows typically ranging from 9°C (48°F) to 13°C (55°F).
Average temperatures in May
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 May
Historical weather records for Rosario in May
Browse day-by-day weather records for Rosario spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Rosario historical weather extremes in May
Based on 45 years of weather observations in Rosario between 1981 and 2026, these are the recorded extremes.
- Rosario recorded its highest May temperature of 30°C (86°F) on May 19, 2008.
- Rosario experienced its chilliest May day on May 28, 2007, reaching only 7°C (45°F).
- The lowest overnight temperature recorded in May was 0°C (32°F) (May 31, 2008).
Best Places in Uruguay in May
Find out more about the weather in Uruguay and which places have the best travel conditions in this month. See all of Uruguay in May →
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 Rosario in May
For Rosario in May, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. Rain is likely on several days, so bring a good rain jacket.
What To Do in Rosario in May
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Cycling9/10 -
Walking9/10 -
Camping8/10 -
Outdoor sports9/10
Rosario 3-Day Forecast
More climate data for Rosario
See the full Rosario climate overview or explore weather in Uruguay.
Popular in May
Where to go in May - average daytime high across popular destinations.
Punta Del Diablo
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