Rosario weather in August
August in Rosario: nice, dry, with clean air — an excellent time to visit.
#5 of 12 months in Rosario · #196 of 897 destinations to visit in August · comfort 89/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
Traveller notes on Rosario in August
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Rosario climate normals — August
| Daytime high | 20°C / 67°F | 😎 nice |
|---|---|---|
| Nighttime low | 8°C / 47°F | |
| Rainfall | 20 mm / 0.8 in | ☀️ dry |
| Rainy days | 3 days | |
| Humidity | 66% | 💧 humid |
| Dew point | 6°C / 44°F | |
| Sunshine | 9.1 h/day | |
| Daylight | 10.9 h | |
| Wind | 17 km/h / 11 mph | |
| Air quality (US AQI) | 26 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Rosario in August — FAQ
- Is August a good time to visit Rosario?
- August in Rosario: nice, dry, with clean air — an excellent time to visit. It ranks #5 of 12 months for Rosario on SeasonMap's comfort score (89/100).
- What is the weather like in Rosario in August?
- In August, Rosario averages a daily high of 19.5°C and a low of 8.2°C, with about 20.2 mm of rain over roughly 2.8 rainy days.
- What is the air quality in Rosario in August?
- Rosario has a mean US Air Quality Index of about 26 in August.