Port Arthur Weather in December

The climate in Port Arthur during December can be summarized as mild and wet.

December is in the winter in Port Arthur and is typically the 3rd coldest month of the year. Daytime maximum temperatures average around a cool 18°C (64°F), whilst at night 7°C (45°F) is normal.

On average December is the 6th wettest month of the year in Port Arthur with around 122mm 4.8 inches of rain making it a wet 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 5.3 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 Port Arthur in December 2024.