What is the weather like in Rio de Janeiro vs São Paulo in September?

In September, Rio de Janeiro averages 29°C high / 20°C low with about 60 mm of rain; São Paulo averages 27°C high / 17°C low with about 47 mm.

Rio de Janeiro vs São Paulo in September

Rio de Janeiro is the better pick in September — 88 vs 84 on SeasonMap's comfort score. Rio de Janeiro is hot, a little rain, while São Paulo is warm, a little rain, poor air quality.

Rio de Janeiro vs São Paulo — September climate, side by side

	Rio de Janeiro	São Paulo
Comfort score	88/100 (A)	84/100 (A)
Feels-like high	31°C	28°C
Avg high / low	29° / 20°	27° / 17°
Rainfall	60 mm	47 mm
Rainy days	9	7
Humidity	74%	74%
Air quality (AQI)	70	104

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

Rio de Janeiro vs São Paulo in September — FAQ

Is September better in Rio de Janeiro or São Paulo?: Rio de Janeiro is the better pick in September — 88 vs 84 on SeasonMap's comfort score. Rio de Janeiro is hot, a little rain, while São Paulo is warm, a little rain, poor air quality.
What is the weather like in Rio de Janeiro vs São Paulo in September?: In September, Rio de Janeiro averages 29°C high / 20°C low with about 60 mm of rain; São Paulo averages 27°C high / 17°C low with about 47 mm.