Invercargill Weather in December

The climate in Invercargill during December can be summarized as mild and a little damp.

December is in the summer in Invercargill and is typically the 3rd warmest month of the year. Daytime maximum temperatures average around 18°C (64°F), whilst at night 9°C (48°F) is normal.

On average December is the 4th wettest month of the year in Invercargill with around 95mm 3.7 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 19 days, although this may vary considerably.

On the flip side this corresponds to an average of 6.2 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 Invercargill in December 2024.