Monument Beach Weather Forecast

    • 17
    • 23

    Shower or two

    • 13
    • 17

    Cloudy

    • 14
    • 20

    Possible shower

    • 14
    • 23

    Mostly sunny

    • 15
    • 26

    Mostly sunny

    • 18
    • 27

    Shower or two

    • 15
    • 18

    Shower or two

Today 21 Sep South Coast

Cloudy. Medium chance of showers in the north, slight chance elsewhere. Winds northwest to southwesterly 15 to 25 km/h tending southeast to southwesterly 25 to 40 km/h in the early morning then becoming light in the late evening. Overnight temperatures falling to between 10 and 16 with daytime temperatures reaching between 15 and 21.

Illawarra Coastal Waters

Port Hacking to Ulladulla
Wind
Northwesterly 15 to 20 knots shifting southerly 15 to 25 knots in the morning. Winds reaching up to 30 knots in the late afternoon.
Seas
1 to 1.5 metres, increasing to 2 to 2.5 metres around midday.
1st Swell
Southerly 1 to 1.5 metres, increasing to 2 to 3 metres around midday.
Weather
Becoming cloudy.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Monument Beach Temperature Statistics View More

September Temperature

Ulladulla (15km)

  • Lowest 16 September, 2026

    6.9 °C

  • Average September

    16.4 °C

  • Highest 19 September, 2026

    29.5 °C

Climate (2021–2026)

Ulladulla (15km)

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  • Average Low 2021–2026

    13.9 °C

  • Average 2021–2026

    17.1 °C

  • Average High 2021–2026

    20.9 °C
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