St Helens Weather Forecast

    • 13
    • 23

    Sunny

    • 8
    • 23

    Becoming windy. Sunny

    • 8
    • 17

    Mostly sunny

    • 3
    • 17

    Mostly sunny

    • 4
    • 19

    Sunny

    • 7
    • 19

    Partly cloudy

    • 10
    • 24

    Possible shower

Today 19 Sep St Helens

Sunny. Winds northwesterly 15 to 20 km/h tending westerly in the middle of the day then becoming light in the early afternoon.

East of Flinders Island Coastal Waters

North Flinders Island to St Helens Point
Wind
Westerly 15 to 25 knots, reaching up to 30 knots offshore in the late morning and afternoon.
Seas
2 to 3 metres.
1st Swell
Southerly around 1 metre inshore, increasing to 1 to 1.5 metres offshore.
Weather
Partly cloudy.
Weather Situation
A high to the north of Tasmania is combining with a cold front passing to the south of Tasmania to direct a vigorous westerly flow over the state, with these conditions to continue into later this morning. A weak ridge is forecast to extend over Tasmania this afternoon and evening, ahead of another cold front to cross the state on Sunday evening. The flow will tend colder southwesterly on Monday morning, with a high to establish over the Bight. This high is expected to move to the north of Tasmania on Tuesday morning and lie to the northeast of the state by Tuesday evening.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

St Helens Temperature Statistics View More

September Temperature

St Helens Aerodrome (3km)

  • Lowest 17 September, 2026

    2.2 °C
  • Average September

    11.9 °C
  • Highest 10 September, 2026

    22.2 °C

Climate (2021–2026)

St Helens Aerodrome (3km)

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  • Average Low 2021–2026

    9.4 °C
  • Average 2021–2026

    13.4 °C
  • Average High 2021–2026

    18.3 °C
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