The climate in Harrison during December can be summarized as cool and a little damp.
December is in the winter in Harrison and is typically the 3rd coldest month of the year. Daytime maximum temperatures average around a cold 9°C (48°F), whilst at night -2°C (28°F) is normal.
Daytime temperature | 9°C 48.2°F |
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Nightly temperature | -2°C 28.4°F |
Average temperature | 3.5°C 38.3°F |
Daily sunshine | 5.5 hrs |
Avg rainfall | 87 mm 3.4 ins |
Rainy days | 9 days |
Sea temperature | 13.7°C 56.7°F |
Humidity | 71% |
Windspeed | 16.6kph 10 mph |
On average December is the 4th driest month of the year in Harrison with around 87mm 3.4 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 9 days, although this may vary considerably.
On the flip side this corresponds to an average of 5.5 hours of sunshine per day.
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Harrison in December 2025.
Best places to visit in December
Hottest month: | July | 31.6°C 88.9°F |
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Driest month: | January | 65mm 2.6ins |
Sunniest month: | July | 11.3hrs |
Coldest month: | January | 6.9°C 44.4°F |
Wettest month: | May | 141mm 5.6ins |