Dianas Beach Weather Forecast

    • 7
    • 15

    Partly cloudy

    • 4
    • 20

    Sunny

    • 4
    • 19

    Sunny

    • 7
    • 19

    Mostly sunny

    • 8
    • 19

    Partly cloudy

    • 11
    • 20

    Possible shower

    • 9
    • 17

    Shower or two

Today 9 Sep St Helens

Partly cloudy. Slight chance of a shower in the early morning. Winds westerly 15 to 20 km/h tending southwesterly 20 to 30 km/h before dawn then becoming light in the evening.

Upper East Coastal Waters

St Helens Point to Wineglass Bay
Wind
Westerly 20 to 30 knots turning southwesterly before dawn.
Seas
2 to 3 metres.
1st Swell
South to southwesterly 1 to 2 metres, increasing to 2 to 3 metres around midday.
Weather
Partly cloudy. 60% chance of showers, with possible small hail offshore in the morning and afternoon.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Dianas Beach Temperature Statistics View More

September Temperature

St Helens Aerodrome (5km)

  • Lowest 8 September, 2026

    3.5 °C

  • Average September

    11.8 °C

  • Highest 1 September, 2026

    17.3 °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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