Dianas Beach Weather Forecast

    • 9
    • 19

    Sunny

    • 10
    • 22

    Partly cloudy

    • 15
    • 25

    Shower or two. Possible storm

    • 12
    • 21

    Possible shower

    • 9
    • 20

    Partly cloudy

    • 7
    • 22

    Sunny

    • 10
    • 26

    Mostly sunny

Today 11 Dec St Helens

Sunny. Light winds becoming easterly 15 to 20 km/h in the middle of the day then becoming light in the late afternoon.

Upper East Coastal Waters

St Helens Point to Wineglass Bay
Wind
Southerly 10 to 15 knots, reaching up to 20 knots offshore early in the morning. Winds becoming variable about 10 knots in the middle of the day then becoming north to northeasterly 10 to 15 knots in the evening.
Seas
Around 1 metre.
1st Swell
Southerly around 1 metre.
Weather
Mostly sunny.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Dianas Beach Temperature Statistics View More

December Temperature

St Helens Aerodrome (5km)

  • Lowest 2 December, 2025

    6.6 °C

  • Average December

    15.5 °C

  • Highest 4 December, 2025

    27.3 °C

Climate (2020–Present)

St Helens Aerodrome (5km)

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  • Average Low 2020–2025

    9.3 °C

  • Average 2020–2025

    13.3 °C

  • Average High 2020–2025

    18.2 °C
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