Saint Helens Marina Weather Forecast

    • 5
    • 18

    Mostly sunny

    • 5
    • 17

    Mostly sunny

    • 5
    • 17

    Mostly sunny

    • 7
    • 17

    Shower or two

    • 10
    • 18

    Shower or two

    • 7
    • 15

    Shower or two

    • 6
    • 15

    Shower or two

Today 20 May St Helens

Mostly sunny. Light winds becoming southerly 15 to 20 km/h in the early afternoon then tending southwesterly in the evening.

East of Flinders Island Coastal Waters

North Flinders Island to St Helens Point
Wind
Southwesterly 10 to 15 knots, reaching up to 25 knots offshore during the morning.
Seas
Below 1 metre, increasing to 1 to 2 metres offshore.
1st Swell
Northeasterly 1.5 to 2 metres.
Weather
Mostly sunny.
Weather Situation
A high pressure centre near the South Australian coast extends a ridge of high pressure to the west of Tasmania. The ridge slowly approaches Tasmania and is expected to cross during Thursday and Friday, bringing mostly settled weather to the state. The high is then forecast to move to the east of Tasmania later Friday as a cold front approaches from the west during Saturday.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Saint Helens Marina Temperature Statistics View More

May Temperature

St Helens Aerodrome (2km)

  • Lowest 8 May, 2026

    6.1 °C

  • Average May

    13.7 °C

  • Highest 1 May, 2026

    24.9 °C

Climate (2021–Present)

St Helens Aerodrome (2km)

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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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