Bay of Islands Weather Forecast

    • 6
    • 12

    Shower or two. Becoming windy

    • 6
    • 14

    Cloudy

    • 7
    • 15

    Cloudy

    • 5
    • 18

    Possible shower

    • 11
    • 21

    Shower or two

    • 10
    • 18

    Showers

    • 9
    • 16

    Shower or two

Today 26 Sep South East

Cloudy. High chance of showers, becoming less likely in the evening. Snow falling above 500 metres. Possible small hail from the late morning. Winds southwesterly 25 to 40 km/h. Daytime maximum temperatures between 7 and 12.

South East Coastal Waters

Tasman Island to South East Cape
Wind
Southwesterly 20 to 25 knots, reaching up to 30 knots in the afternoon.
Seas
2 to 2.5 metres.
1st Swell
Southwesterly 2.5 to 3 metres, increasing to 3 to 4 metres during the afternoon.
Weather
Cloudy. 70% chance of showers, with possible small hail from the late morning.
Weather Situation
A cold front will cross Tasmania early Saturday morning. A high pressure system is then forecast to extend a ridge over Tasmania from the west during Saturday, before moving across the state on Sunday and Monday. The high is expected to move over the Tasman Sea during Tuesday with northerly flow building over Tasmania ahead of an approaching trough.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Bay of Islands Temperature Statistics View More

September Temperature

Cape Bruny (18km)

  • Lowest 21 September, 2026

    4.1 °C

  • Average September

    11.5 °C

  • Highest 20 September, 2026

    26.5 °C

Climate (2021–2026)

Cape Bruny (18km)

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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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