Mary Bay Weather Forecast

    • 11
    • 21

    Clear

    • 9
    • 21

    Partly cloudy

    • 13
    • 21

    Shower or two

    • 13
    • 21

    Shower or two

    • 14
    • 21

    Showers

    • 13
    • 21

    Showers

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    Shower or two

Today 9 May Illawarra

Clear. Winds south to southeasterly 15 to 20 km/h becoming light in the late afternoon.

Illawarra Coastal Waters

Port Hacking to Ulladulla
Wind
South to southwesterly 10 to 15 knots, reaching up to 20 knots offshore north of Point Perpendicular in the late afternoon.
Seas
1 to 1.5 metres, decreasing to 1 metre by early evening.
1st Swell
Southerly 2 to 2.5 metres.
Weather
Partly cloudy.
Weather Situation
A high pressure system near the Bight extends a ridge across New South Wales. This ridge will be the dominant feature for the coming week as the centre of the high gradually moves east, reaching the Tasman Sea on Tuesday.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Mary Bay Temperature Statistics View More

May Temperature

Point Perpendicular (13km)

  • Lowest 8 May, 2026

    10.6 °C

  • Average May

    17.1 °C

  • Highest 2 May, 2026

    23.9 °C

Climate (2021–Present)

Point Perpendicular (13km)

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  • Average Low 2021–2026

    14.7 °C

  • Average 2021–2026

    17.4 °C

  • Average High 2021–2026

    20.8 °C
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