Dianas Basin Weather Forecast

    • 8
    • 19

    Partly cloudy

    • 11
    • 21

    Partly cloudy

    • 11
    • 22

    Sunny

    • 13
    • 24

    Partly cloudy

    • 12
    • 19

    Partly cloudy

    • 11
    • 21

    Partly cloudy

    • 11
    • 21

    Partly cloudy

Today 27 Dec St Helens

Partly cloudy. Winds southerly 15 to 25 km/h tending southeasterly 20 to 30 km/h in the middle of the day.

Upper East Coastal Waters

St Helens Point to Wineglass Bay
Wind
Southerly 15 to 25 knots decreasing to 10 to 15 knots in the late evening.
Seas
1.5 to 2 metres.
1st Swell
Southerly 1 to 1.5 metres inshore, increasing to 2 to 2.5 metres offshore.
Weather
Partly 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

Dianas Basin Temperature Statistics View More

December Temperature

St Helens Aerodrome (5km)

  • Lowest 25 December, 2025

    6.4 °C

  • Average December

    15.7 °C

  • Highest 17 December, 2025

    29.5 °C

Climate (2020–Present)

St Helens Aerodrome (5km)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2020–2025

    9.3 °C

  • Average 2020–2025

    13.3 °C

  • Average High 2020–2025

    18.2 °C
Get WillyWeather+ to remove ads