What is the weather like in Buenos Aires vs Rosario in September?

In September, Buenos Aires averages 19°C high / 12°C low with about 66 mm of rain; Rosario averages 23°C high / 9°C low with about 39 mm.

Buenos Aires vs Rosario in September

Rosario is the better pick in September — 91 vs 86 on SeasonMap's comfort score. Rosario is nice, a little rain, clean air, while Buenos Aires is nice, a little rain, clean air.

Buenos Aires vs Rosario — September climate, side by side

	🇦🇷 Buenos Aires	🇦🇷 Rosario
Comfort score	86/100 (A)	91/100 (S)
Feels-like high	17°C	22°C
Avg high / low	19° / 12°	23° / 9°
Rainfall	66 mm	39 mm
Rainy days	6	5
Humidity	74%	65%
Air quality (AQI)	34	31

Monthly climate normals (ERA5 reanalysis). Comfort scores are SeasonMap estimates.

Month by month

Buenos Aires vs Rosario in September — FAQ

Is September better in Buenos Aires or Rosario?: Rosario is the better pick in September — 91 vs 86 on SeasonMap's comfort score. Rosario is nice, a little rain, clean air, while Buenos Aires is nice, a little rain, clean air.
What is the weather like in Buenos Aires vs Rosario in September?: In September, Buenos Aires averages 19°C high / 12°C low with about 66 mm of rain; Rosario averages 23°C high / 9°C low with about 39 mm.