Weather in Summerside: December
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Average day temperature: | 32.4°F |
| Average night temperature: | 30.4°F | |
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Sea water temperature: | 35.4°F |
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Number of sunny days: | 6 days |
| Day length: | 8.6 - 8.9 hours | |
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Number of rainy days: | 2 days |
| Precipitation totals: | 1.0 in. | |
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forecast
| Summerside |
temperature
| Summerside |
Air temperature in December, °F
The highest day temperature during December of 2025 was 48°F. At the same time the lowest night temperature was 9°F. Daily and nightly averages during December were 27.1°F and 23.7°F.
Sea water temperature in Summerside in December, °F
The average sea water temperature in December of 2025 was 34.7°F. The highest and lowest sea temperatures during the month were 39.7°F and 31.1°F.
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 Summerside in December is 1.0 in. Other months of the year show relatively similar values.
The average wind speed value in December is 16.2 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: 3.2.
Best time for vacation in Summerside
Summerside on a weather map
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