Saint Helens Island Weather Forecast

    • 6
    • 15

    Showers

    • 10
    • 17

    Showers increasing

    • 11
    • 16

    Shower or two

    • 5
    • 16

    Partly cloudy

    • 9
    • 16

    Possible shower

    • 4
    • 16

    Mostly sunny

    • 5
    • 16

    Partly cloudy

Today 18 Aug St Helens

Cloudy. Very high chance of showers. Light winds becoming northeasterly 15 to 25 km/h in the middle of the day then tending northerly 15 to 20 km/h in the evening.

Upper East Coastal Waters

St Helens Point to Wineglass Bay
Wind
Northeasterly 15 to 20 knots, reaching up to 25 knots offshore in the evening.
Seas
Around 1 metre, increasing to 1 to 2 metres around midday.
1st Swell
Southerly 1 to 1.5 metres, decreasing to around 1 metre during the morning.
Weather
Partly cloudy. 80% chance of showers.
Weather Situation
A high pressure system lies just to the east of Tasmania and is expected to slowly move away towards New Zealand during Tuesday and Wednesday. A northerly stream will develop over Tasmania on Tuesday and persist into Wednesday, ahead of a trough to cross the state during Wednesday evening and early Thursday morning. Another trough is expected to cross Tasmania during Thursday, with a west to northwesterly stream to develop and persist through Friday.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Saint Helens Island Temperature Statistics View More

August Temperature

St Helens Aerodrome (5km)

  • Lowest 1 August, 2026

    3 °C

  • Average August

    9.9 °C

  • Highest 13 August, 2026

    19.2 °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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