Grantham Island Weather Forecast

    • 20
    • 25

    Possible storm, heavy falls

    • 19
    • 26

    Possible shower

    • 17
    • 22

    Cloudy

    • 16
    • 22

    Cloudy

    • 16
    • 23

    Partly cloudy

    • 15
    • 24

    Sunny

    • 16
    • 24

    Partly cloudy

Today 28 Feb Port Lincoln

Cloudy. Very high chance of rain, becoming less likely late this afternoon and evening. The chance of a thunderstorm during the morning and afternoon. Heavy rain which may lead to flash flooding possible. Light winds becoming easterly 15 to 20 km/h in the morning then tending northeasterly 15 to 25 km/h in the middle of the day.

Spencer Gulf Coastal Waters

Wind
East to northeasterly 10 to 15 knots, reaching up to 20 knots south of Port Neill to Port Victoria in the late evening.
Seas
Around 1 metre.
1st Swell
South to southwesterly below 1 metre.
Weather
Cloudy. 60% chance of rain. The chance of a thunderstorm. Heavy falls possible.
Weather Situation
A tropical low pressure system near the NT boarder extends a trough over central and southeastern SA. The low will move southwards on Sunday, before a cold front moves through the Bight on Monday, pushing the low out to the east of SA late. A high pressure system will then move into the Bight, extending a ridge over the state on Tuesday and Wednesday.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Grantham Island Temperature Statistics View More

February Temperature

Port Lincoln Airport (19km)

  • Lowest 4 February, 2026

    10.6 °C

  • Average February

    20.1 °C

  • Highest 16 February, 2026

    34.5 °C

Climate (2021–Present)

Port Lincoln Airport (19km)

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  • Average Low 2021–2026

    11.4 °C

  • Average 2021–2026

    15.8 °C

  • Average High 2021–2026

    21.3 °C
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