Boat Harbour Weather Forecast

    • 15
    • 24

    Shower or two. Possible storm

    • 15
    • 28

    Shower or two developing

    • 16
    • 34

    Possible late shower

    • 15
    • 22

    Cloudy

    • 14
    • 22

    Cloudy

    • 13
    • 27

    Partly cloudy

    • 14
    • 30

    Sunny

Today 12 Dec Illawarra

Cloudy. High chance of showers, most likely in the morning and afternoon. The chance of a thunderstorm in the afternoon and early evening. Light winds becoming easterly 15 to 25 km/h in the morning then becoming light in the late evening. Overnight temperatures falling to between 11 and 17 with daytime temperatures reaching between 19 and 23.

Illawarra Coastal Waters

Port Hacking to Ulladulla
Wind
Easterly 10 to 15 knots turning northeasterly in the early afternoon. Winds reaching up to 20 knots offshore south of Port Kembla during the afternoon and evening.
Seas
Around 1 metre, increasing to 1 to 1.5 metres offshore south of Point Perpendicular during the afternoon.
1st Swell
Easterly below 1 metre.
Weather
Partly cloudy. 70% chance of showers. The chance of a thunderstorm.
Weather Situation
Winds will tend east to northeasterly later today as a high pressure system gradually drifts into the Tasman Sea, with winds turning northerly over the weekend. A fresh to strong southerly change is expected during Sunday and Monday.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Boat Harbour Temperature Statistics View More

December Temperature

Point Perpendicular (2km)

  • Lowest 2 December, 2025

    10.3 °C

  • Average December

    20.1 °C

  • Highest 5 December, 2025

    33 °C

Climate (2020–Present)

Point Perpendicular (2km)

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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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