Onion Creek Entrance Weather Forecast

    • 3
    • 15

    Mostly sunny

    • 3
    • 15

    Partly cloudy

    • 6
    • 16

    Mostly sunny

    • 5
    • 14

    Showers

    • 6
    • 13

    Shower or two

    • 7
    • 15

    Possible shower

    • 7
    • 14

    Partly cloudy

Today 31 Jul St Helens

Mostly sunny. Light winds.

Upper East Coastal Waters

St Helens Point to Wineglass Bay
Wind
Southwesterly 10 to 15 knots, reaching up to 20 knots offshore early in the morning. Winds becoming variable about 10 knots in the middle of the day then becoming north to northwesterly 10 to 15 knots in the late afternoon.
Seas
1 to 1.5 metres, decreasing below 1 metre during the morning.
1st Swell
Southerly 1 to 1.5 metres inshore, increasing to 1.5 to 2 metres offshore.
Weather
Mostly sunny.
Weather Situation
A cold southwesterly airstream persists over Tasmania, tending more westerly during today and on Friday as a large high pressure centre establishes over the South Australian coast. The high centre will then slowly cross the southeastern mainland late Friday and during Saturday as a low centre and associated cold front approach Tasmania from the west and cross on Monday.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Onion Creek Entrance Temperature Statistics View More

July Temperature

St Helens Aerodrome (3km)

  • Lowest 30 July, 2026

    0.9 °C

  • Average July

    9.8 °C

  • Highest 19 July, 2026

    17.3 °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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