Grants Lagoon Entrance Weather Forecast

    • 13
    • 23

    Mostly clear

    • 10
    • 22

    Partly cloudy

    • 10
    • 19

    Sunny

    • 10
    • 21

    Partly cloudy

    • 15
    • 26

    Shower or two

    • 12
    • 20

    Shower or two

    • 8
    • 19

    Partly cloudy

Today 9 Dec St Helens

Mostly clear. Winds southeasterly 15 to 20 km/h tending southerly in the late evening.

East of Flinders Island Coastal Waters

North Flinders Island to St Helens Point
Wind
Westerly 15 to 25 knots, reaching up to 30 knots offshore in the late afternoon.
Seas
1.5 to 2.5 metres.
1st Swell
Northwest to southwesterly below 1 metre.
Weather
Clear.
Weather Situation
A westerly stream persists over Tasmania as a ridge of high pressure extends over the north this evening. The high centre will slowly approach the state on Wednesday, as a weak trough brushes the far south. The high is expected to move over Tasmania on Thursday and slowly away to the east during Friday. A cold front is then forecast to cross the state during Saturday.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Grants Lagoon Entrance Temperature Statistics View More

December Temperature

St Helens Aerodrome (9km)

  • Lowest 2 December, 2025

    6.6 °C

  • Average December

    15.2 °C

  • Highest 4 December, 2025

    27.3 °C

Climate (2020–Present)

St Helens Aerodrome (9km)

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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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