Rosario weather in May
May in Rosario: nice, a little rain, with clean air — an excellent time to visit.
#7 of 12 months in Rosario · #316 of 897 destinations to visit in May · comfort 86/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
Traveller notes on Rosario in May
No notes yet. Open Rosario on the map to add the first one.
Rosario climate normals — May
| Daytime high | 19°C / 66°F | 😎 nice |
|---|---|---|
| Nighttime low | 11°C / 51°F | |
| Rainfall | 47 mm / 1.9 in | 🌦 some rain |
| Rainy days | 5 days | |
| Humidity | 75% | 💦 very humid |
| Dew point | 10°C / 49°F | |
| Sunshine | 7.8 h/day | |
| Daylight | 10.4 h | |
| Wind | 16 km/h / 10 mph | |
| Air quality (US AQI) | 21 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Where is Rosario?
Loading map…
Rosario in May — FAQ
- Is May a good time to visit Rosario?
- May in Rosario: nice, a little rain, with clean air — an excellent time to visit. It ranks #7 of 12 months for Rosario on SeasonMap's comfort score (86/100).
- What is the weather like in Rosario in May?
- In May, Rosario averages a daily high of 19.1°C and a low of 10.5°C, with about 47.3 mm of rain over roughly 4.6 rainy days.
- What is the air quality in Rosario in May?
- Rosario has a mean US Air Quality Index of about 21 in May.