Swimcart Lagoon Entrance Weather Forecast

    • 8
    • 23

    Windy. Partly cloudy

    • 8
    • 16

    Windy. Mostly sunny

    • 3
    • 17

    Mostly sunny

    • 4
    • 19

    Mostly sunny

    • 7
    • 20

    Partly cloudy

    • 12
    • 24

    Shower or two

    • 12
    • 17

    Shower or two

Today 20 Sep St Helens

Partly cloudy. Damaging winds possible. Winds westerly 35 to 45 km/h.

East of Flinders Island Coastal Waters

North Flinders Island to St Helens Point
Wind
Westerly 25 to 35 knots.
Seas
2 to 4 metres.
1st Swell
Southerly below 1 metre inshore, increasing to 1 to 1.5 metres offshore.
Weather
Mostly clear.
Weather Situation
A cold front will cross Tasmania this evening, with winds to tend colder southwesterly early Monday morning. A high will establish over the Bight later Monday, with the high expected to move to the north of Tasmania on Tuesday morning and lie over the northern Tasman Sea during Wednesday and Thursday.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Swimcart Lagoon Entrance Temperature Statistics View More

September Temperature

St Helens Aerodrome (12km)

  • Lowest 17 September, 2026

    2.2 °C

  • Average September

    12.2 °C

  • Highest 10 September, 2026

    22.2 °C

Climate (2021–2026)

St Helens Aerodrome (12km)

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  • Average Low 2021–2026

    9.4 °C

  • Average 2021–2026

    13.4 °C

  • Average High 2021–2026

    18.4 °C
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