Sterile Island Weather Forecast

    • 12
    • 20

    Shower

    • 10
    • 20

    Shower

    • 7
    • 14

    Cloudy

    • 6
    • 15

    Shower

    • 8
    • 15

    Shower

    • 7
    • 17

    Shower

    • 7
    • 16

    Shower

Today 30 Sep South East

Cloudy. High chance of showers. Winds north to northwesterly 30 to 45 km/h tending west to northwesterly 25 to 40 km/h during the morning. Daytime maximum temperatures between 17 and 23.

South East Coastal Waters

Tasman Island to South East Cape
Wind
North to northwesterly 15 to 25 knots, reaching up to 30 knots offshore early in the morning. Winds turning west to southwesterly in the early afternoon.
Seas
2 to 3 metres, decreasing to 1 to 2 metres around midday.
1st Swell
Southwesterly 2.5 to 3 metres.
Weather
Cloudy. 80% chance of showers.
Weather Situation
Northerly flow builds over Tasmania today ahead of an approaching trough, forecast to cross Wednesday morning. A broad trough is forecast to cross the state during the day Thursday and then a cold front in the evening. A ridge of high pressure is then expected to approach Tasmania from the west during Friday, concurrently with a trough deepening over Victoria. The trough is forecast to move to the east of Tasmania on Saturday.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Sterile Island Temperature Statistics View More

September Temperature

Cape Bruny (14km)

  • Lowest 21 September, 2026

    4.1 °C

  • Average September

    11.2 °C

  • Highest 20 September, 2026

    26.5 °C

Climate (2021–2026)

Cape Bruny (14km)

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  • Average Low 2021–2026

    9.6 °C

  • Average 2021–2026

    12.5 °C

  • Average High 2021–2026

    16.6 °C
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