Mary Bay Weather Forecast

    • 4
    • 16

    Sunny

    • 6
    • 17

    Partly cloudy

    • 5
    • 20

    Mostly sunny

    • 7
    • 21

    Partly cloudy

    • 8
    • 18

    Sunny

    • 7
    • 18

    Sunny

    • 6
    • 18

    Sunny

Today 31 Jul Illawarra

Sunny. The chance of fog about the Southern Highlands in the early morning. Areas of morning frost inland. Light winds becoming south to southeasterly 15 to 20 km/h in the middle of the day then becoming light in the evening. Overnight temperatures falling to between minus 1 and 5 above zero with daytime temperatures reaching between 13 and 17.

Illawarra Coastal Waters

Port Hacking to Ulladulla
Wind
Southwesterly 10 to 15 knots, reaching up to 20 knots offshore during the day. Winds turning southerly in the middle of the day.
Seas
Around 1 metre, increasing to 1 to 1.5 metres during the morning.
1st Swell
Southerly 2 to 2.5 metres.
Weather
Mostly sunny. 50% chance of showers.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Mary Bay Temperature Statistics View More

July Temperature

Point Perpendicular (13km)

  • Lowest 24 July, 2026

    8.4 °C

  • Average July

    13.6 °C

  • Highest 2 July, 2026

    20.3 °C

Climate (2021–2026)

Point Perpendicular (13km)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    14.8 °C

  • Average 2021–2026

    17.5 °C

  • Average High 2021–2026

    20.9 °C
Get WillyWeather+ to remove ads