Weather in Posillipo: December
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Average day temperature: | 56.3°F |
Average night temperature: | 50.3°F | |
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Sea water temperature: | 63.6°F |
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Number of sunny days: | 9 days |
Day length: | 9.2 - 9.5 hours | |
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Number of rainy days: | 5 days |
Precipitation totals: | 2.2 in. | |
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temperature
Posillipo |
Air temperature in December, °F
Day temperature | Night temperature |
The highest day temperature during December of 2024 was 59°F. At the same time the lowest night temperature was 42°F. Daily and nightly averages during December were 55.7°F and 50.1°F.
Sea water temperature in Posillipo in December, °F
The average sea water temperature in December of 2024 was 64.5°F. The highest and lowest sea temperatures during the month were 66.0°F and 62.6°F.
Sunny days | |
Partly cloudy days | |
Cloudy days |
Mostly all days in December are cloudy but sunny and partly cloudy days are also possible.
Precipitation total in December, in.
Precipitation total value in Posillipo in December is 2.2 in. Other months of the year show relatively similar values.
The average wind speed value in December is 5.2 mph It makes December one of the least 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: 4.9.
Best time for vacation in Posillipo
Posillipo on a weather map

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