Light Beach Weather Forecast

    • 15
    • 24

    Partly cloudy

    • 10
    • 17

    Cloudy

    • 6
    • 21

    Sunny

    • 8
    • 26

    Partly cloudy

    • 13
    • 30

    Partly cloudy

    • 15
    • 30

    Partly cloudy

    • 15
    • 27

    Partly cloudy

Today 20 Sep Mid North

Mostly sunny. Slight chance of a shower in the south at night. Near zero chance of rain elsewhere. Winds northwesterly 35 to 50 km/h turning southwesterly 25 to 35 km/h in the early afternoon. Daytime maximum temperatures 25 to 31.

Gulf St Vincent Coastal Waters

Wind
West to northwesterly 15 to 20 knots tending west to southwesterly in the early afternoon.
Seas
1 to 1.5 metres, decreasing to 1 metre around midday, increasing to 1 to 1.5 metres south of Port Vincent to Brighton during the afternoon.
1st Swell
West to southwesterly below 0.5 metres.
Weather
Mostly sunny.
Weather Situation
A cold front will cross the west of the state this morning and will track across the east of the state during the day. Another high pressure system will move eastwards across waters to the south during Monday then over Victoria and the Tasman Sea on Tuesday. This high will extend a ridge westwards over SA ahead of a low pressure trough that is expected to move over the far west of SA during Wednesday.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Light Beach Temperature Statistics View More

September Temperature

Roseworthy (30km)

  • Lowest 8 September, 2026

    -0.2 °C

  • Average September

    11.5 °C

  • Highest 18 September, 2026

    24.7 °C

Climate (2021–2026)

Roseworthy (30km)

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  • Average Low 2021–2026

    9.9 °C

  • Average 2021–2026

    16.3 °C

  • Average High 2021–2026

    23.7 °C
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