Weather in Rio de Janeiro: September
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Average day temperature: | 80.5°F |
| Average night temperature: | 69.6°F | |
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Sea water temperature: | 72.1°F |
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Number of sunny days: | 17 days |
| Day length: | 11.7 - 12.3 hours | |
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Number of rainy days: | 4 days |
| Precipitation totals: | 2.7 in. | |
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| Rio de Janeiro |
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| Rio de Janeiro |
Air temperature in September, °F
| Day temperature | Night temperature |
The highest day temperature during September of 2024 was 91°F. At the same time the lowest night temperature was 66°F. Daily and nightly averages during September were 81.3°F and 70.6°F.
Sea water temperature in Rio de Janeiro in September, °F
The average sea water temperature in September of 2024 was 74.2°F. The highest and lowest sea temperatures during the month were 77.0°F and 71.4°F.
| Sunny days | |
| Partly cloudy days | |
| Cloudy days |
Mostly all days in September are sunny but cloudy days are also possible.
Precipitation total in September, in.
Precipitation total value in Rio de Janeiro in September is 3.0 in. Other months of the year show relatively similar values.
The average wind speed value in September is 6.9 mph It makes September one of the most windy months of the year.
This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in September is: 7.7.
Best time for vacation in Rio de Janeiro
Rio de Janeiro on a weather map
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