Weather in Sao Luis: December
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Average day temperature: | 85.2°F |
| Average night temperature: | 77.5°F | |
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Sea water temperature: | 83.0°F |
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Number of sunny days: | 1 day |
| Day length: | 12.3 - 12.3 hours | |
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Number of rainy days: | 3 days |
| Precipitation totals: | 1.6 in. | |
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forecast
| Sao Luis |
temperature
| Sao Luis |
Air temperature in December, °F
The highest day temperature during December of 2025 was 85°F. At the same time the lowest night temperature was 74°F. Daily and nightly averages during December were 82.8°F and 79.3°F.
Sea water temperature in Sao Luis in December, °F
The average sea water temperature in December of 2025 was 82.1°F. The highest and lowest sea temperatures during the month were 82.6°F and 81.3°F.
Mostly all days in December are partly cloudy but sunny or cloudy days are also possible.
Precipitation total in December, in.
Precipitation total value in Sao Luis in December is 1.6 in.
The average wind speed value in December is 8.9 mph It makes December 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 December is: 5.1.
Best time for vacation in Sao Luis
Sao Luis on a weather map
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