Onion Creek Entrance Weather Forecast

    • 13
    • 23

    Possible shower

    • 10
    • 15

    Showers

    • 4
    • 15

    Sunny

    • 3
    • 17

    Sunny

    • 4
    • 20

    Partly cloudy

    • 11
    • 21

    Shower or two

    • 11
    • 23

    Shower or two

Today 25 Sep St Helens

Partly cloudy. Medium chance of showers. Winds northwesterly 15 to 25 km/h tending westerly 15 to 20 km/h in the evening then becoming light in the late evening.

Upper East Coastal Waters

St Helens Point to Wineglass Bay
Wind
Northwesterly 15 to 20 knots shifting south to southeasterly in the evening. Winds reaching up to 25 knots offshore in the evening.
Seas
1 to 1.5 metres, increasing to 1 to 2 metres offshore.
1st Swell
Southerly around 1 metre.
Weather
Partly cloudy.
Weather Situation
A weak trough moves over the state today ahead of a cold front which crosses early tomorrow morning. A high pressure system is then forecast to extend a ridge over Tasmania from the southwest during Saturday, before moving across the state on Sunday and Monday.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Onion Creek Entrance Temperature Statistics View More

September Temperature

St Helens Aerodrome (3km)

  • Lowest 22 September, 2026

    1.7 °C

  • Average September

    12.2 °C

  • Highest 20 September, 2026

    23.6 °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

    18.4 °C
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