Onion Creek Entrance Weather Forecast

    • 15
    • 27

    Possible storm

    • 13
    • 20

    Becoming windy. Partly cloudy

    • 8
    • 20

    Partly cloudy

    • 7
    • 21

    Sunny

    • 10
    • 25

    Sunny

    • 13
    • 26

    Becoming cloudy

    • 13
    • 20

    Possible shower

Today 13 Dec St Helens

Partly cloudy. Slight chance of a shower during the morning and afternoon. The chance of a thunderstorm during the morning and afternoon. Winds northerly 15 to 20 km/h tending northeasterly in the late afternoon then turning north to northwesterly 15 to 25 km/h in the evening.

Upper East Coastal Waters

St Helens Point to Wineglass Bay
Wind
Northerly 15 to 20 knots tending northwesterly in the evening. Winds reaching up to 30 knots offshore in the late evening.
Seas
1.5 to 2.5 metres, decreasing to 1 to 1.5 metres by early evening.
1st Swell
Northeasterly 1 to 1.5 metres, increasing to 1 to 2 metres around midday.
Weather
Partly cloudy. The chance of a thunderstorm in the morning and afternoon.
Weather Situation
A weak cold front is crosses Tasmania today, ahead of a second stronger cold front to cross early tomorrow. The next high pressure system in the Bight is then forecast to move eastwards over Tasmania by late Monday and into the Tasman Sea on Tuesday.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Onion Creek Entrance Temperature Statistics View More

December Temperature

St Helens Aerodrome (3km)

  • Lowest 2 December, 2025

    6.6 °C

  • Average December

    15.3 °C

  • Highest 4 December, 2025

    27.3 °C

Climate (2020–Present)

St Helens Aerodrome (3km)

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  • Average Low 2020–2025

    9.3 °C

  • Average 2020–2025

    13.3 °C

  • Average High 2020–2025

    18.2 °C
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