Mary Bay Weather Forecast

    • 13
    • 21

    Windy. Partly cloudy

    • 10
    • 22

    Partly cloudy

    • 11
    • 24

    Mostly sunny

    • 13
    • 25

    Shower or two

    • 13
    • 22

    Showers

    • 10
    • 19

    Shower or two

    • 11
    • 21

    Shower or two

Today 23 Oct Illawarra

Partly cloudy. Damaging winds possible in the early morning. Winds west to southwesterly 25 to 40 km/h tending northeast to southeasterly 15 to 25 km/h in the morning then becoming light in the late evening. Overnight temperatures falling to between 8 and 14 with daytime temperatures reaching between 19 and 23.

Illawarra Coastal Waters

Port Hacking to Ulladulla
Wind
South to southwesterly 15 to 20 knots, reaching up to 30 knots offshore during the morning. Winds shifting east to northeasterly 10 to 15 knots in the late afternoon.
Seas
1 to 2 metres, decreasing to 1 metre during the afternoon.
1st Swell
Southerly below 1 metre, increasing to 2 to 3 metres during the morning.
Weather
Partly cloudy.
Weather Situation
Fresh to strong west to southwesterly will shift south to southwesterly this morning and weaken and shift east to southeast this afternoon as a high pressure ridge spreads across New South Wales. This ridge will persist through Saturday when winds will turn northeasterly then northwesterly ahead of the next cold front which will cross the state Sunday.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Mary Bay Temperature Statistics View More

October Temperature

Point Perpendicular (13km)

  • Lowest 14 October, 2025

    11.5 °C

  • Average October

    18.8 °C

  • Highest 20 October, 2025

    32.6 °C

Climate (2020–Present)

Point Perpendicular (13km)

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  • Average Low 2020–2025

    14.7 °C

  • Average 2020–2025

    17.4 °C

  • Average High 2020–2025

    20.7 °C
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