Grants Lagoon Entrance Weather Forecast

    • 6
    • 16

    Showers increasing

    • 9
    • 14

    Rain

    • 7
    • 15

    Shower or two

    • 8
    • 15

    Shower or two

    • 5
    • 16

    Partly cloudy

    • 6
    • 16

    Partly cloudy

    • 5
    • 14

    Partly cloudy

Today 9 Aug St Helens

Partly cloudy. Very high chance of showers, most likely in the evening. Light winds becoming northeasterly 15 to 25 km/h in the morning then tending northwest to northeasterly in the middle of the day.

East of Flinders Island Coastal Waters

North Flinders Island to St Helens Point
Wind
North to northeasterly 15 to 20 knots, reaching up to 30 knots offshore in the late evening.
Seas
Around 1 metre, increasing to 1 to 2 metres offshore during the morning.
1st Swell
Southeasterly below 1 metre, tending northeasterly 1 to 2 metres during the afternoon.
Weather
Partly cloudy. 90% chance of showers.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Grants Lagoon Entrance Temperature Statistics View More

August Temperature

St Helens Aerodrome (9km)

  • Lowest 1 August, 2026

    3 °C

  • Average August

    8.6 °C

  • Highest 6 August, 2026

    16.3 °C

Climate (2021–2026)

St Helens Aerodrome (9km)

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  • Average Low 2021–2026

    9.4 °C

  • Average 2021–2026

    13.4 °C

  • Average High 2021–2026

    18.3 °C
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