St Helens Weather Forecast
- 8
- 20
Cloudy
- 12
- 20
Shower or two
- 13
- 23
Sunny
- 10
- 20
Mostly sunny
- 9
- 19
Mostly sunny
- 9
- 21
Partly cloudy
- 14
- 25
Shower or two
Today 7 Dec St Helens
Cloudy. Winds northwesterly 20 to 25 km/h.
East of Flinders Island Coastal Waters
North Flinders Island to St Helens Point- Wind
- Westerly 15 to 20 knots, reaching up to 25 knots offshore.
- Seas
- 1.5 to 2 metres.
- 1st Swell
- South to southwesterly around 1 metre offshore.
- Weather
- Partly cloudy.
- Weather Situation
- A westerly flow over Tasmania on Sunday, shifting northwesterly on Monday ahead of a cold front crossing the state during the day. Westerly flow behind the cold front then persists on Tuesday, with a trough of low pressure embedded in the westerly flow moving over the state. A high pressure system south of the Bight then extends a ridge over Bass Strait, with another cold front clipping the south later Wednesday. The high moves eastwards to be centred east of Tasmania later Thursday.
St Helens Temperature Statistics View More
December Temperature
St Helens Aerodrome (3km)
Lowest 2 December, 2025
6.6 °CAverage December
15.6 °CHighest 4 December, 2025
27.3 °C
Climate (2020–Present)
St Helens Aerodrome (3km)
Average Low 2020–2025
9.3 °CAverage 2020–2025
13.3 °CAverage High 2020–2025
18.2 °C