Rio de Janeiro in September
Find out everything about the water temperature in Rio de Janeiro in September. Average, minimum and maximum recorded temperatures as well as daily temperature in September for the last two years. Compare the current month's sea temperature data with other months of the year.
Water temperature in September
Minimum:
67.9 °F
Average:
72.6 °F
Maximum:
77.5 °F
Sea water temperature in Rio de Janeiro in September
In the city of Rio de Janeiro, the month of September is somewhat comfortable for swimming. The minimum recorded temperature during this month was 67.9°F on September 9, 2017, with an average temperature being 72.6°F and a maximum temperature reaching 77.5°F on September 27, 2023.
| Date | 10 years average | 2024 | 2023 |
|---|---|---|---|
| Sep 1 | 71.5°F | 71.9°F | 71.7°F |
| Sep 2 | 71.9°F | 72.6°F | 72.4°F |
| Sep 3 | 71.9°F | 71.5°F | 72.8°F |
| Sep 4 | 72.1°F | 72.8°F | 72.6°F |
| Sep 5 | 71.9°F | 73.3°F | 73.1°F |
| Sep 6 | 71.8°F | 73.1°F | 76.1°F |
| Sep 7 | 71.3°F | 72.7°F | 75.1°F |
| Sep 8 | 71.3°F | 72.8°F | 73.5°F |
| Sep 9 | 71.7°F | 73.3°F | 73.5°F |
| Sep 10 | 72.1°F | 74.4°F | 73.2°F |
| Sep 11 | 72.5°F | 74.8°F | 73.4°F |
| Sep 12 | 72.7°F | 75.8°F | 73.3°F |
| Sep 13 | 72.9°F | 76.4°F | 74.2°F |
| Sep 14 | 73.0°F | 75.0°F | 75.6°F |
| Sep 15 | 72.9°F | 74.6°F | 74.6°F |
| Sep 16 | 72.6°F | 72.6°F | 72.9°F |
| Sep 17 | 72.8°F | 73.7°F | 73.7°F |
| Sep 18 | 72.8°F | 73.0°F | 74.9°F |
| Sep 19 | 72.8°F | 74.0°F | 75.2°F |
| Sep 20 | 73.0°F | 73.3°F | 74.3°F |
| Sep 21 | 73.7°F | 74.6°F | 74.9°F |
| Sep 22 | 73.2°F | 72.9°F | 75.8°F |
| Sep 23 | 72.9°F | 74.9°F | 76.2°F |
| Sep 24 | 72.6°F | 75.3°F | 74.5°F |
| Sep 25 | 73.1°F | 76.3°F | 77.4°F |
| Sep 26 | 73.1°F | 76.5°F | 76.9°F |
| Sep 27 | 73.4°F | 77.1°F | 77.5°F |
| Sep 28 | 73.5°F | 76.7°F | 76.6°F |
| Sep 29 | 73.7°F | 76.1°F | 76.2°F |
| Sep 30 | 73.2°F | 74.4°F | 75.8°F |
In Rio de Janeiro, the months October through May offer comfortable swimming conditions, which amounts to 246 swimming days.
The warmest water in Rio de Janeiro was recorded on February 14, 2018, reaching a 85.4°F. While the coldest temperature occurred on July 28, 2014, dipping to 67.2°F. The average readings by season are 78.7°F in Winter, 77.3°F in Spring, 72.0°F in Summer, and 73.5°F in Autumn.
The average temperature in September is slightly warmer than August's average of 71.4°F. And in October, the temperature is expected to rise further, potentially reaching an average of 73.6°F.
Popular neighboring cities and resorts
| City | Water temperature* | Distance** |
|---|---|---|
| Niterói |
73.8°F
|
5mi |
| Duque de Caxias |
75.2°F
|
12mi |
| São João de Meriti |
75.2°F
|
14mi |
| Belford Roxo |
75.2°F
|
17mi |
* current water temperature in this city
** straight line distance from Rio de Janeiro