Weather on September 21 in Rio de Janeiro
Historical weather data for September 21 in Rio de Janeiro, Brazil
Avg High27°C (81°F)
Avg Low17°C (63°F)
Warmest198128°C
Coldest197913°C
Based on 26 years of data from RIO DE JANEIRO
About This Date
September 21st in Rio de Janeiro, Brazil typically brings warm fall weather, with average highs around 27°C and lows near 17°C. Over 26 years of records, the warmest September 21st was in 1981 (28°C average), while the coldest was 1979 (13°C) — a 27°F range across recorded history. Rain or other precipitation has occurred on about 31% of September 21st dates historically, with the wettest September 21st recording 0.99" of rain.
Planning for September 21st in Rio de Janeiro? Stay hydrated and seek shade during peak afternoon hours. Consider bringing rain gear or an umbrella.
Year by Year History
| Year | High | Low | Precip |
|---|---|---|---|
| 2024 | -- | 22°C (72°F) | -- |
| 2021 | -- | 21°C (69°F) | -- |
| 2016 | -- | 18°C (64°F) | 0.1" |
| 2015 | 31°C (87°F) | -- | -- |
| 2014 | 29°C (84°F) | 8°C (46°F) | 0.03" |
| 2012 | -- | 17°C (62°F) | 0" |
| 2011 | -- | 14°C (58°F) | -- |
| 2010 | -- | 12°C (54°F) | -- |
| 2009 | 31°C (88°F) | 18°C (64°F) | 0.41" |
| 2008 | -- | 13°C (56°F) | 0.3" |
| 2007 | 32°C (90°F) | -- | -- |
| 2005 | 25°C (77°F) | 20°C (68°F) | 0" |
| 2004 | -- | 21°C (70°F) | -- |
| 2003 | 32°C (90°F) | 21°C (70°F) | 0" |
| 2002 | 32°C (90°F) | -- | -- |
| 2001 | -- | 19°C (66°F) | -- |
| 2000 | 27°C (80°F) | 15°C (59°F) | -- |
| 1999 | 25°C (77°F) | 14°C (58°F) | -- |
| 1983 | 20°C (68°F) | -- | 0.03" |
| 1981 | 34°C (93°F) | 22°C (72°F) | 0" |
| 1980 | 27°C (81°F) | 20°C (68°F) | 0.99" |
| 1979 | 16°C (61°F) | 10°C (50°F) | 0.1" |
| 1978 | -- | 19°C (66°F) | 0" |
| 1977 | 23°C (73°F) | 21°C (70°F) | 0.05" |
| 1976 | -- | 18°C (64°F) | -- |
| 1974 | 26°C (79°F) | 21°C (70°F) | 0" |