Big Lagoon Beach Weather Forecast

    • 9
    • 18

    Cloudy

    • 9
    • 23

    Mostly sunny

    • 10
    • 25

    Mostly sunny

    • 14
    • 24

    Shower or two

    • 9
    • 18

    Possible shower

    • 9
    • 20

    Partly cloudy

    • 9
    • 21

    Cloudy

Today 27 Dec South East

Cloudy. Slight chance of a shower this morning. Winds south to southwesterly 20 to 30 km/h tending south to southeasterly in the late afternoon then becoming light in the late evening. Daytime maximum temperatures between 14 and 19.

South East Coastal Waters

Tasman Island to South East Cape
Wind
Southerly 15 to 25 knots turning east to southeasterly below 10 knots in the evening.
Seas
1.5 to 2 metres, decreasing to 1 to 1.5 metres during the morning, then decreasing to 1 metre during the afternoon.
1st Swell
Southerly 2 to 3 metres.
Weather
Cloudy.
Weather Situation
A high pressure system will extend a ridge over the state as it moves to the south of Tasmania later today, before moving over Tasman Sea on Sunday. By late Monday a trough will begin to develop off the west coast, moving over the state late Tuesday.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Big Lagoon Beach Temperature Statistics View More

December Temperature

Cape Bruny (14km)

  • Lowest 25 December, 2025

    5.7 °C

  • Average December

    12.9 °C

  • Highest 4 December, 2025

    24.6 °C

Climate (2020–Present)

Cape Bruny (14km)

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  • Average Low 2020–2025

    9.5 °C

  • Average 2020–2025

    12.4 °C

  • Average High 2020–2025

    16.5 °C
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