Dianas Beach Weather Forecast

    • 6
    • 12

    Partly cloudy

    • 3
    • 13

    Possible shower

    • 5
    • 15

    Shower or two

    • 3
    • 16

    Partly cloudy

    • 4
    • 14

    Partly cloudy

    • 3
    • 15

    Shower or two

    • 9
    • 14

    Showers

Today 3 Aug St Helens

Partly cloudy. Slight chance of a shower. Winds northwesterly 15 to 20 km/h becoming light in the evening.

Upper East Coastal Waters

St Helens Point to Wineglass Bay
Wind
Northwesterly 15 to 20 knots.
Seas
1 to 1.5 metres.
1st Swell
Southerly around 1 metre.
Weather
Partly cloudy.
Weather Situation
A broad area of low pressure over Tasmania will move slowly to the east during Tuesday. A ridge of high pressure will develop over Tasmania on Wednesday, ahead of a weak cold front expected to cross the state on Thursday. The ridge of high pressure will redevelop over Tasmania on Friday.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Dianas Beach Temperature Statistics View More

August Temperature

St Helens Aerodrome (5km)

  • Lowest 1 August, 2026

    3 °C

  • Average August

    8.6 °C

  • Highest 1 August, 2026

    15.2 °C

Climate (2021–2026)

St Helens Aerodrome (5km)

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  • Average Low 2021–2026

    9.4 °C

  • Average 2021–2026

    13.4 °C

  • Average High 2021–2026

    18.3 °C
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