Big Lagoon Entrance Weather Forecast

    • 15
    • 28

    Possible storm

    • 13
    • 20

    Windy. Partly cloudy

    • 8
    • 21

    Partly cloudy

    • 7
    • 22

    Sunny

    • 10
    • 25

    Mostly sunny

    • 12
    • 27

    Sunny

    • 13
    • 19

    Shower or two

Today 13 Dec St Helens

Partly cloudy. The chance of a thunderstorm. Winds northeasterly 15 to 20 km/h turning northwesterly 15 to 25 km/h in the evening.

East of Flinders Island Coastal Waters

North Flinders Island to St Helens Point
Wind
Northwesterly 15 to 20 knots.
Seas
1 to 1.5 metres.
1st Swell
Northeasterly 1.5 metres.
Weather
Partly cloudy. The chance of a thunderstorm.
Weather Situation
A cold front approaches the west of Tasmania this evening, expected to cross the state early Saturday. A southwesterly flow will develop behind the front and persist into Monday. A ridge is then expected to extend over Tasmania as a high pressure centre moves through Bass Strait on Tuesday, and out to the Tasman Sea by Wednesday.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Big Lagoon Entrance Temperature Statistics View More

December Temperature

St Helens Aerodrome (17km)

  • 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 (17km)

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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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