Wailua Weather in December

The climate in Wailua during December can be summarized as warm, humid and very wet.

December is in the winter in Wailua and is typically the 4th coldest month of the year. Daytime maximum temperatures average around a muggy 25°C (77°F), whilst at night 18°C (65°F) is normal.

On average December is the wettest month of the year in Wailua with around 370mm 14.6 inches of rain making it a very wet time to visit. This rainfall is typically spread over 17 days, although this may vary considerably.

On the flip side this corresponds to an average of 5.8 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 Wailua in December 2025.