St Helens Weather in December
What's the weather like in St Helens (Tasmania) in December 2025?
The climate in St Helens during December can be summarized as mild and reasonably dry.
December is in the summer in St Helens and is typically the 4th warmest month of the year. Daytime maximum temperatures average around 20°C (67°F), whilst at night 11°C (52°F) is normal.
| Daytime temperature | 19.7°C 67.4°F |
|---|---|
| Nightly temperature | 11°C 51.7°F |
| Average temperature | 15.3°C 59.5°F |
| Daily sunshine | 8.5 hrs |
| Avg rainfall | 80 mm 3.1 ins |
| Rainy days | 12 days |
| Sea temperature | 16.2°C 61.2°F |
| Humidity | 64% |
| Windspeed | 18.4kph 11 mph |
On average December is the 4th wettest month of the year in St Helens with around 80mm 3.1 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 12 days, although this may vary considerably.
On the flip side this corresponds to an average of 8.5 hours of sunshine per day.
December temperatures in St Helens
December rainfall
December hourly sunshine
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 St Helens in December 2025.
Other monthly averages
Best places to visit in December
St Helens weather stats
| Hottest month: | February | 21.4°C 70.5°F |
|---|---|---|
| Driest month: | January | 47mm 1.9ins |
| Sunniest month: | February | 8.6hrs |
| Coldest month: | July | 12.7°C 54.9°F |
| Wettest month: | August | 87mm 3.4ins |
© Google
Top Australia locations
- Adelaide
- Alice Springs
- Brisbane
- Cairns
- Canberra
- Darwin
- Hobart
- Kakadu National Park
- Melbourne
- Noosa Heads
- Perth
- Port Douglas
- Sydney