Wilmington Weather in December

The climate in Wilmington during December can be summarized as cool and a little damp.

December is in the winter in Wilmington and is typically the 3rd coldest month of the year. Daytime maximum temperatures average around a cold 6°C (44°F), whilst at night -3°C (27°F) is normal.

On average December is the 5th driest month of the year in Wilmington with around 94mm 3.7 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 10 days, although this may vary considerably.

On the flip side this corresponds to an average of 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 Wilmington in December 2025.