Summercloud Bay Weather Forecast

    • 17
    • 34

    Mostly sunny

    • 18
    • 33

    Shower or two

    • 19
    • 33

    Showers. Possible storm

    • 19
    • 31

    Shower or two. Possible storm

    • 19
    • 28

    Possible shower

    • 17
    • 27

    Shower or two

    • 16
    • 29

    Possible shower

Today 18 Dec Illawarra

Mostly sunny. The chance of fog in the north early this morning. Winds west to northwesterly 15 to 25 km/h tending northwest to northeasterly 15 to 20 km/h in the evening then tending west to northwesterly in the late evening. Daytime maximum temperatures in the mid to high 30s.

Illawarra Coastal Waters

Port Hacking to Ulladulla
Wind
North to northeasterly 15 to 25 knots.
Seas
1.5 to 2 metres.
1st Swell
Southerly 1 to 1.5 metres, decreasing to around 1 metre during the morning.
Weather
Sunny.
Weather Situation
A high in the Tasman Sea is directing northerly winds over Coastal Waters. Later today or Friday a weak trough will bring a brief southerly change to much of the coast before winds turn northerly again over the weekend. Following this, a cold front will bring a fresh to strong southerly change later on Sunday or Monday.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Summercloud Bay Temperature Statistics View More

December Temperature

Point Perpendicular (14km)

  • Lowest 2 December, 2025

    10.3 °C

  • Average December

    19.9 °C

  • Highest 5 December, 2025

    33 °C

Climate (2020–Present)

Point Perpendicular (14km)

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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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