Dianas Beach Weather Forecast

    • 13
    • 19

    Showers increasing

    • 11
    • 17

    Shower or two. Windy

    • 9
    • 20

    Partly cloudy

    • 9
    • 23

    Partly cloudy

    • 12
    • 20

    Partly cloudy

    • 12
    • 24

    Mostly sunny

    • 14
    • 26

    Mostly sunny

Today 26 Mar St Helens

Cloudy. Very high chance of showers. Winds southeasterly 15 to 25 km/h tending southerly 25 to 35 km/h in the early afternoon.

Upper East Coastal Waters

St Helens Point to Wineglass Bay
Wind
Southerly 15 to 20 knots increasing to 20 to 25 knots in the early afternoon. Winds reaching up to 30 knots in the evening.
Seas
Around 1 metre, increasing to 1.5 to 2.5 metres around midday.
1st Swell
Northeasterly around 1 metre, increasing to 1 to 1.5 metres during the afternoon.
Weather
Cloudy. 95% chance of showers.
Weather Situation
A trough crosses the state ahead of a cold front approaching the west and crossing early tomorrow morning. A fresh southerly flow is expected behind the front, persisting into Friday. A ridge of high pressure will then extend over the state from the west during the weekend, with southwesterly flow easing.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Dianas Beach Temperature Statistics View More

March Temperature

St Helens Aerodrome (5km)

  • Lowest 13 March, 2026

    6.8 °C

  • Average March

    17.1 °C

  • Highest 23 March, 2026

    28.4 °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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