Weather in Sao Luis: September
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Average day temperature: | 87.6°F |
| Average night temperature: | 77.5°F | |
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Sea water temperature: | 82.6°F |
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Number of sunny days: | 10 days |
| Day length: | 12.1 - 12.1 hours | |
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Number of rainy days: | 0 days |
| Precipitation totals: | 0.1 in. | |
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forecast
| Sao Luis |
temperature
| Sao Luis |
Air temperature in September, °F
The highest day temperature during September of 2026 was 86°F. At the same time the lowest night temperature was 77°F. Daily and nightly averages during September were 83.2°F and 79.0°F.
Sea water temperature in Sao Luis in September, °F
The average sea water temperature in September of 2026 was 82.9°F. The highest and lowest sea temperatures during the month were 84.0°F and 82.2°F.
Mostly all days in September are partly cloudy but sunny or cloudy days are also possible.
Precipitation total in September, in.
Precipitation total value in Sao Luis in September is 0.1 in. Other months of the year show relatively similar values.
The average wind speed value in September is 11.1 mph It makes September most windy month 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: 7.3.
Best time for vacation in Sao Luis
Sao Luis on a weather map
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