Onion Creek Entrance Weather Forecast

    • 4
    • 18

    Sunny

    • 6
    • 17

    Mostly sunny

    • 8
    • 19

    Partly cloudy

    • 12
    • 19

    Partly cloudy

    • 8
    • 16

    Shower or two

    • 5
    • 18

    Sunny

    • 6
    • 19

    Mostly sunny

Today 11 Sep St Helens

Sunny. Light winds becoming northeasterly 15 to 20 km/h in the early afternoon then becoming light in the late afternoon.

Upper East Coastal Waters

St Helens Point to Wineglass Bay
Wind
Southeast to southwesterly 10 to 15 knots becoming variable about 10 knots in the middle of the day.
Seas
Below 1 metre.
1st Swell
Southerly 1 to 2 metres inshore, increasing to 2 to 3 metres offshore.
Weather
Sunny.
Weather Situation
A high pressure system over the Bight approaches Bass Strait today and is forecast to move over the northern Tasman Sea by early Saturday and continue to move east. A weak trough is expected late Sunday before a cold front approaches the state from the west on 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 8 September, 2026

    3.5 °C

  • Average September

    11.7 °C

  • Highest 8 September, 2026

    18.1 °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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