Grants Lagoon Entrance Weather Forecast

    • 13
    • 20

    Possible shower

    • 11
    • 20

    Shower or two

    • 10
    • 19

    Showers increasing

    • 7
    • 14

    Showers easing

    • 6
    • 17

    Partly cloudy

    • 7
    • 20

    Sunny

    • 7
    • 19

    Sunny

Today 4 May St Helens

Partly cloudy. Medium chance of showers, most likely in the evening. Winds northwesterly 15 to 20 km/h becoming light in the evening.

East of Flinders Island Coastal Waters

North Flinders Island to St Helens Point
Wind
Northwesterly 10 to 15 knots turning northerly in the late afternoon. Winds reaching up to 20 knots offshore in the late evening.
Seas
Around 1 metre, increasing to 1 to 1.5 metres offshore by early evening.
1st Swell
Northeasterly 2 to 2.5 metres.
Weather
Partly cloudy. The chance of a thunderstorm in the evening.
Weather Situation
A low pressure system will pass to the north today ahead of a narrow ridge that will extend over western Tasmania on Tuesday. Another cold front will cross Tasmania on Wednesday, with a colder southwesterly stream expected during Thursday.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Grants Lagoon Entrance Temperature Statistics View More

May Temperature

St Helens Aerodrome (9km)

  • Lowest 3 May, 2026

    11.3 °C

  • Average May

    15.8 °C

  • Highest 1 May, 2026

    24.9 °C

Climate (2021–Present)

St Helens Aerodrome (9km)

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  • Average Low 2021–2026

    9.3 °C

  • Average 2021–2026

    13.4 °C

  • Average High 2021–2026

    18.3 °C
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