Alnwick Island Weather Forecast

    • 21
    • 22

    Partly cloudy

    • 19
    • 21

    Sunny

    • 21
    • 22

    Sunny

    • 18
    • 20

    Partly cloudy

    • 19
    • 20

    Partly cloudy

    • 19
    • 21

    Shower

    • 19
    • 20

    Shower

Today 10 Aug Capricornia

Partly cloudy. High chance of showers in the south, medium chance elsewhere. Winds northerly 15 to 25 km/h turning west to northwesterly in the morning then becoming light in the evening. Overnight temperatures falling to between 12 and 17 with daytime temperatures reaching the mid to high 20s.

Mackay Costal Waters

Bowen to St Lawrence
Wind
North to northeasterly about 10 knots tending north to northwesterly 10 to 15 knots in the morning then decreasing to about 10 knots in the evening.
Seas
Below 1 metre.
1st Swell
Below 0.5 metres.
Weather
Mostly sunny.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Alnwick Island Temperature Statistics View More

August Temperature

Middle Percy Island (40km)

  • Lowest 3 August, 2026

    15.8 °C

  • Average August

    18.6 °C

  • Highest 8 August, 2026

    22.1 °C

Climate (2021–2026)

Middle Percy Island (40km)

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  • Average Low 2021–2026

    20.7 °C

  • Average 2021–2026

    22.7 °C

  • Average High 2021–2026

    25.5 °C
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