Dianas Beach Weather Forecast

    • 6
    • 21

    Mostly clear

    • 7
    • 19

    Partly cloudy

    • 9
    • 20

    Shower or two

    • 9
    • 17

    Mostly sunny

    • 5
    • 17

    Mostly sunny

    • 5
    • 19

    Partly cloudy

    • 8
    • 18

    Cloudy

Today 14 Apr St Helens

Mostly clear. Winds northwesterly 20 to 30 km/h tending westerly 15 to 20 km/h in the late evening.

Upper East Coastal Waters

St Helens Point to Wineglass Bay
Wind
Northwesterly 15 to 20 knots, reaching up to 30 knots offshore in the evening. Winds turning west to southwesterly in the evening.
Seas
1 to 1.5 metres, increasing to 1 to 2 metres by early evening.
1st Swell
Southerly 1 to 1.5 metres, decreasing to around 1 metre later in the evening.
Weather
Partly cloudy.
Weather Situation
A cold front over Tasmania will move away to the east this evening, with a ridge of high pressure will move over the state during Wednesday. A gusty northwesterly stream will develop on Thursday morning, ahead of a more significant cold front expected to cross Thursday afternoon and evening. A cold and gusty south to southwesterly stream is then expected to develop and persist through Friday, with a ridge to approach and move over Tasmania on Saturday.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Dianas Beach Temperature Statistics View More

April Temperature

St Helens Aerodrome (5km)

  • Lowest 4 April, 2026

    6.5 °C

  • Average April

    14 °C

  • Highest 1 April, 2026

    26 °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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