Weather in Rio de Janeiro, Brazil in September
In an average September, Rio de Janeiro sees a daily high around 26°C and a low around 19°C, based on 1981–2026 of local climate records.
| Average high | 26°C |
|---|---|
| Typical high range | 22°C to 31°C |
| Average low | 19°C |
| Typical low range | 17°C to 21°C |
| Average daily precipitation | 3 mm |
September records
The most extreme September on record for each metric, across 1981–2026. For rainfall, the wettest and driest are by total September accumulation.
High
Highest
37°C
2023-09-27
Lowest
18°C
1983-09-09
Low
Highest
23°C
2023-09-27
Lowest
14°C
1991-09-06
Feels-like
Highest
53°C
2023-09-27
Lowest
14°C
1991-09-06
Humidity
Highest
20.6 g/m³
2020-09-30
Lowest
9.8 g/m³
2002-09-03
Wind
Highest
41 km/h
2020-09-22
Lowest
8 km/h
2018-09-20
Precip
Wettest
252 mm
1983
Driest
3 mm
2024
See Rio de Janeiro's live weather grade →
Visiting Rio de Janeiro in September? See how its comfort stacks up against where you live.
Compare Rio de Janeiro with your city →