Dianas Beach Weather Forecast

    • 4
    • 12

    Cloudy

    • 4
    • 11

    Cloudy

    • 5
    • 13

    Cloudy

    • 3
    • 15

    Partly cloudy

    • 4
    • 13

    Partly cloudy

    • 3
    • 13

    Partly cloudy

    • 3
    • 14

    Partly cloudy

Today 4 Jul St Helens

Cloudy. Light winds becoming southwesterly 15 to 20 km/h in the evening.

Upper East Coastal Waters

St Helens Point to Wineglass Bay
Wind
Westerly 20 to 30 knots turning southwesterly in the middle of the day.
Seas
2 to 3 metres.
1st Swell
South to southwesterly 2 to 3 metres, increasing to 2 to 4 metres by early evening.
Weather
Cloudy. 60% chance of showers, with possible small hail offshore from the late morning.
Weather Situation
A cold and gusty southwesterly airstream prevails over Tasmania. A very strong high pressure centre will then move over the state on Sunday and remain in the vicinity during Monday, bringing settled weather to the state. A cold front is expected to briefly cross the south on Tuesday, before the high reinstates itself.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Dianas Beach Temperature Statistics View More

July Temperature

St Helens Aerodrome (5km)

  • Lowest 3 July, 2026

    6.7 °C

  • Average July

    11.3 °C

  • Highest 1 July, 2026

    16.7 °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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