Weather in Belfast: December
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Average day temperature: | 45.6°F |
| Average night temperature: | 41.9°F | |
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Sea water temperature: | 50.1°F |
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Number of sunny days: | 3 days |
| Day length: | 7.2 - 7.7 hours | |
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Number of rainy days: | 6 days |
| Precipitation totals: | 2.8 in. | |
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forecast
| Belfast |
temperature
| Belfast |
Air temperature in December, °F
| Day temperature | Night temperature |
The highest day temperature during December of 2024 was 53°F. At the same time the lowest night temperature was 33°F. Day and night temperature averages during December were 46.2°F and 43.4°F.
Sea water temperature in Belfast in December, °F
The average sea water temperature in December of 2024 was 50.2°F. The highest and lowest sea temperatures during the month were 52.2°F and 49.3°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 Belfast in December is 2.6 in. Other months of the year show relatively similar values.
The average wind speed value in December is 12.1 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: 2.0.
Best time for vacation in Belfast
Belfast on a weather map
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