Rocky Plains Bay Weather Forecast

    • 12
    • 19

    Shower

    • 10
    • 15

    Shower

    • 9
    • 20

    Partly cloudy

    • 10
    • 28

    Partly cloudy

    • 14
    • 19

    Cloudy

    • 10
    • 24

    Sunny

    • 13
    • 24

    Shower

Today 21 Jan Western

Cloudy. The chance of fog early this morning. Very high chance of showers, most likely during this afternoon and evening. Light winds becoming west to southwesterly 20 to 30 km/h in the morning then tending south to southwesterly 25 to 35 km/h in the late afternoon. Daytime maximum temperatures between 17 and 20.

South West Coastal Waters

South East Cape to Low Rocky Point
Wind
Westerly 15 to 20 knots turning southerly 20 to 25 knots in the middle of the day.
Seas
Below 1 metre, increasing to 1 to 1.5 metres during the morning, then increasing to 1.5 to 2 metres during the afternoon.
1st Swell
Southwesterly 2 to 2.5 metres.
Weather
Cloudy. 80% chance of showers.
Weather Situation
A cold front will move across the state from the west today. A high pressure system moves into waters south of the Bight and extends a ridge over Tasmania on Thursday. That high then moves into the Tasman Sea on Friday, directing a northerly stream over the state ahead of a cold front expected over the weekend.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Rocky Plains Bay Temperature Statistics View More

January Temperature

Maatsuyker Island (30km)

  • Lowest 11 January, 2026

    7.8 °C

  • Average January

    13.9 °C

  • Highest 19 January, 2026

    20.8 °C

Climate (2021–Present)

Maatsuyker Island (30km)

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  • Average Low 2021–2026

    9.4 °C

  • Average 2021–2026

    11.6 °C

  • Average High 2021–2026

    14.2 °C
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