Weather in St. Petersburg: December
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Average day temperature: | 68.4°F |
| Average night temperature: | 61.9°F | |
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Sea water temperature: | 66.8°F |
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Number of sunny days: | 15 days |
| Day length: | 10.4 - 10.5 hours | |
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Number of rainy days: | 1 day |
| Precipitation totals: | 0.5 in. | |
| more information | ||
forecast
| St. Petersburg |
temperature
| St. Petersburg |
Air temperature in December, °F
The highest day temperature during December of 2025 was 80°F. At the same time the lowest night temperature was 42°F. Daily and nightly averages during December were 71.7°F and 58.7°F.
Sea water temperature in St. Petersburg in December, °F
The average sea water temperature in December of 2025 was 67.5°F. The highest and lowest sea temperatures during the month were 70.0°F and 64.8°F.
Mostly all days in December are sunny but cloudy days are also possible.
Precipitation total in December, in.
Precipitation total value in St. Petersburg in December is 0.5 in. Other months of the year show relatively similar values.
The average wind speed value in December is 10.7 mph
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: 6.8.
Best time for vacation in St. Petersburg
St. Petersburg on a weather map
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