Grants Lagoon Entrance Weather Forecast

    • 5
    • 15

    Showers

    • 4
    • 12

    Partly cloudy

    • 3
    • 14

    Sunny

    • 6
    • 14

    Shower or two

    • 6
    • 14

    Showers easing

    • 3
    • 15

    Sunny

    • 6
    • 15

    Possible shower

Today 13 Jul St Helens

Cloudy. Very high chance of showers, becoming less likely later tonight. Winds northwesterly 25 to 35 km/h tending westerly 20 to 30 km/h in the late evening.

East of Flinders Island Coastal Waters

North Flinders Island to St Helens Point
Wind
Northwesterly 30 to 35 knots turning westerly in the late evening.
Seas
2 to 3 metres, increasing to 2.5 to 4 metres offshore.
1st Swell
Southeasterly around 1 metre inshore, increasing to 2 to 3 metres offshore later in the evening.
Weather
Cloudy. 95% chance of showers. The chance of a thunderstorm offshore later this evening with possible squalls to at least 40 knots.
Weather Situation
A strong cold front clears to the east of the state this evening. A southwesterly airstream behind the front on Monday is expected to gradually shift westerly, persisting throughout the middle of the week, with embedded troughs or cold fronts moving in from the west at times.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Grants Lagoon Entrance Temperature Statistics View More

July Temperature

St Helens Aerodrome (9km)

  • Lowest 12 July, 2025

    0 °C

  • Average July

    8.7 °C

  • Highest 7 July, 2025

    16.6 °C

Climate (2020–Present)

St Helens Aerodrome (9km)

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  • Average Low 2020–2025

    9.4 °C

  • Average 2020–2025

    13.3 °C

  • Average High 2020–2025

    18.2 °C
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