South Island Weather Forecast

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Today 3 Jan Capricornia

Partly cloudy. Slight chance of a shower, most likely during the morning and afternoon. Winds east to southeasterly 15 to 20 km/h tending east to northeasterly 15 to 25 km/h during the morning. Daytime maximum temperatures around 30.

Mackay Costal Waters

Bowen to St Lawrence
Wind
Easterly 15 to 20 knots.
Seas
Around 1 metre, increasing to 1 to 1.5 metres offshore south of Mackay around midday.
1st Swell
Easterly below 1 metre.
Weather
Cloudy. 90% chance of showers north of Hamilton Island, 50% chance elsewhere. The chance of a thunderstorm north of Hamilton Island.
Weather Situation
Onshore winds will continue converging over the coast between Cairns and Mackay for a few days. A trough will move over the Cairns waters late on Sunday. Tropical low 12U will develop in the north Coral Sea from Monday.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

South Island Temperature Statistics View More

January Temperature

Middle Percy Island (12km)

  • Lowest 2 January, 2026

    22.7 °C

  • Average January

    25.4 °C

  • Highest 1 January, 2026

    28.8 °C

Climate (2021–Present)

Middle Percy Island (12km)

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  • Average Low 2021–2026

    20.7 °C

  • Average 2021–2026

    22.6 °C

  • Average High 2021–2026

    25.4 °C
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