Marble Bay Weather Forecast

    • 17
    • 18

    Partly cloudy

    • 17
    • 18

    Cloudy

    • 16
    • 18

    Shower

    • 16
    • 17

    Shower

    • 16
    • 16

    Shower

    • 15
    • 17

    Shower

    • 16
    • 17

    Shower

Today 21 May Lower Eyre Peninsula

Mostly sunny. Winds north to northeasterly 15 to 20 km/h tending north to northwesterly in the middle of the day then turning east to northeasterly in the late morning and early afternoon. Daytime maximum temperatures in the low 20s.

Central Coastal Waters

Wind
Northerly 10 to 15 knots turning northeasterly in the evening.
Seas
Below 1 metre.
1st Swell
Southwesterly 2 to 2.5 metres.
Weather
Partly cloudy.
Weather Situation
A high pressure system over SA will remain dominant as it slowly moves east and into the Tasman Sea on Friday. A cold front move across across South Australia over the weekend, followed by another high pressure system.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Marble Bay Temperature Statistics View More

May Temperature

Neptune Island (36km)

  • Lowest 3 May, 2026

    12.4 °C

  • Average May

    16.5 °C

  • Highest 1 May, 2026

    21.6 °C

Climate (2021–Present)

Neptune Island (36km)

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  • Average Low 2021–2026

    14.3 °C

  • Average 2021–2026

    16.2 °C

  • Average High 2021–2026

    18.8 °C
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