Seal Island Weather Forecast

    • 9
    • 17

    Showers

    • 7
    • 16

    Cloudy

    • 8
    • 17

    Partly cloudy

    • 5
    • 18

    Partly cloudy

    • 8
    • 18

    Shower or two

    • 9
    • 15

    Shower or two

    • 6
    • 15

    Partly cloudy

Today 20 Aug Mount Lofty Ranges

Partly cloudy. High chance of showers in the south, medium chance elsewhere. Winds northwesterly 20 to 30 km/h turning westerly 15 to 25 km/h in the early afternoon. Daytime maximum temperatures between 14 and 17.

South Central Coastal Waters

Wind
Northwesterly 15 to 25 knots, reaching up to 30 knots during the morning. Winds turning westerly in the morning.
Seas
1 to 2 metres, decreasing to 1 metre later in the evening.
1st Swell
Westerly 2 to 3 metres, increasing to 2.5 to 4 metres west of Kangaroo Island.
Weather
Partly cloudy. 90% chance of showers.
Weather Situation
A cold front clears to the east Wednesday evening. Weak troughs clip the southeast in a broad westerly flow on Thursday and Friday, as a ridge of high pressure is expected to approach South Australia from the west. The high centre is expected to linger over the state on the weekend.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Seal Island Temperature Statistics View More

August Temperature

Encounter Bay (4km)

  • Lowest 1 August, 2026

    0.5 °C

  • Average August

    11.9 °C

  • Highest 18 August, 2026

    20.3 °C

Climate (2021–2026)

Encounter Bay (4km)

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  • Average Low 2021–2026

    10.5 °C

  • Average 2021–2026

    15.2 °C

  • Average High 2021–2026

    20.7 °C
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