WanderWhen

São Paulo weather in September

September is one of the best months to visit São Paulo. Expect highs around 27°C, lows near 15°C, and about 7 days with rain.

9.8 · Excellenttravel score for September
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Avg high
27°C
Avg low
15°C
Rainfall
50 mm
Rain days
7
Sunshine
9 h/day
Daylight
11.9 h

What to pack for São Paulo in September

  • t-shirts and light layers
  • a light jacket for evenings
  • a packable rain layer

Humidity averages 75%; max daily wind around 23 km/h.

How September compares

January: 6.6/10 JFebruary: 7.4/10 FMarch: 7.7/10 MApril: 9.3/10 AMay: 9.7/10 MJune: 9.9/10 JJuly: 10.0/10 JAugust: 10.0/10 ASeptember: 9.8/10 SOctober: 8.1/10 ONovember: 8.0/10 NDecember: 7.5/10 D

Best months in São Paulo: April–September. See the full best time to visit São Paulo guide.

São Paulo in September: the details

In September, São Paulo sees average daytime highs of 27°C (80°F) and overnight lows of 15°C (59°F). Rainfall totals roughly 50 mm across 7 rainy days, and the sun shines about 9 hours per day with 11.9 hours of daylight mid-month. Relative humidity averages 75%.

These figures are climate normals computed from the ERA5 weather reanalysis (2019–2024) for São Paulo, Brazil (-23.55, -46.64) — see our methodology. Actual conditions vary year to year.

Where should you go next month?

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