Dianas Basin Weather Forecast

    • 10
    • 19

    Cloudy

    • 13
    • 22

    Partly cloudy

    • 14
    • 22

    Partly cloudy

    • 12
    • 21

    Mostly sunny

    • 12
    • 25

    Partly cloudy

    • 17
    • 24

    Shower or two

    • 16
    • 21

    Possible shower

Today 23 Jan St Helens

Cloudy. Light winds.

Upper East Coastal Waters

St Helens Point to Wineglass Bay
Wind
Variable below 10 knots becoming east to northeasterly 10 to 15 knots in the evening.
Seas
Below 1 metre.
1st Swell
Southeasterly 1.5 metres inshore, increasing to 1.5 to 2 metres offshore.
Weather
Partly cloudy.
Weather Situation
A high pressure system in the south of the Tasman Sea, is directing a northeasterly stream over Tasmania. A cold front approaches the west of Tasmania during Saturday, and is forecast to cross the state overnight into Sunday. A new high pressure system is expected to move in from the west on Sunday and move over the state on Monday to be in the Tasman Sea on Tuesday as another cold front approaches from the west.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Dianas Basin Temperature Statistics View More

January Temperature

St Helens Aerodrome (5km)

  • Lowest 12 January, 2026

    9.4 °C

  • Average January

    17.1 °C

  • Highest 7 January, 2026

    33.6 °C

Climate (2021–Present)

St Helens Aerodrome (5km)

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  • Average Low 2021–2026

    9.3 °C

  • Average 2021–2026

    13.3 °C

  • Average High 2021–2026

    18.2 °C
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