Grantham Island Weather Forecast

    • 10
    • 18

    Cloudy

    • 10
    • 16

    Showers

    • 9
    • 16

    Showers

    • 7
    • 17

    Shower or two

    • 9
    • 15

    Showers easing. Windy

    • 8
    • 15

    Showers

    • 7
    • 14

    Shower or two

Today 4 Jul Port Lincoln

Cloudy. Winds northerly 15 to 20 km/h tending northeasterly 20 to 25 km/h in the early morning then tending northwest to northeasterly 20 to 30 km/h in the middle of the day.

Spencer Gulf Coastal Waters

Wind
Northerly 15 to 25 knots.
Seas
1 to 1.5 metres, increasing to 1 to 2 metres south of Cowell to Wallaroo during the morning.
1st Swell
South to southwesterly around 1 metre.
Weather
Partly cloudy.
Weather Situation
A low pressure system south of WA will move east to be south of the Bight throughout today and will continue to move to the south of SA over the weekend. Associated cold fronts and troughs will move across coastal waters with the first trough on Friday and continuing over the weekend.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Grantham Island Temperature Statistics View More

July Temperature

Port Lincoln Airport (19km)

  • Lowest 2 July, 2025

    3.9 °C

  • Average July

    10.3 °C

  • Highest 2 July, 2025

    16.9 °C

Climate (2020–Present)

Port Lincoln Airport (19km)

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  • Average Low 2020–2025

    11.4 °C

  • Average 2020–2025

    15.8 °C

  • Average High 2020–2025

    21.3 °C
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