Grants Lagoon Entrance Weather Forecast

    • 8
    • 24

    Mostly clear

    • 12
    • 27

    Mostly sunny

    • 14
    • 25

    Partly cloudy

    • 13
    • 18

    Possible shower

    • 13
    • 22

    Showers

    • 12
    • 21

    Showers increasing

    • 12
    • 22

    Possible shower

Today 16 Dec St Helens

Mostly clear. Winds northeasterly 15 to 20 km/h tending northerly in the late afternoon then becoming light in the evening.

East of Flinders Island Coastal Waters

North Flinders Island to St Helens Point
Wind
West to northwesterly 15 to 20 knots.
Seas
Around 1 metre, increasing to 1 to 1.5 metres inshore.
1st Swell
Southerly 1 to 1.5 metres inshore, increasing to 1 to 2 metres offshore.
Weather
Partly cloudy.
Weather Situation
A high pressure system in Bass Strait will maintain a ridge across Tasmania as it drifts into the Tasman Sea on Wednesday. A trough will cross over the state on Thursday with a broad low pressure system developing off the west coast while a weak ridge slides along the south and the east on Friday. On Saturday the low pressure system will move to the south with an associated trough crossing the state.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Grants Lagoon Entrance Temperature Statistics View More

December Temperature

St Helens Aerodrome (9km)

  • Lowest 2 December, 2025

    6.6 °C

  • Average December

    15.4 °C

  • Highest 4 December, 2025

    27.3 °C

Climate (2020–Present)

St Helens Aerodrome (9km)

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  • Average Low 2020–2025

    9.3 °C

  • Average 2020–2025

    13.3 °C

  • Average High 2020–2025

    18.2 °C
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