Number One Rocks Weather Forecast

    • 4
    • 18

    Partly cloudy

    • 8
    • 21

    Sunny

    • 13
    • 19

    Shower

    • 12
    • 17

    Shower

    • 10
    • 15

    Shower

    • 8
    • 15

    Cloudy

    • 6
    • 17

    Partly cloudy

Today 11 Sep Lower South East

The chance of frost this morning, mainly in the north. Patchy morning fog. Mostly sunny afternoon. Light winds. Daytime maximum temperatures around 19.

Lower South East Coastal Waters

Cape Jaffa to SA-Vic Border
Wind
East to southeasterly 10 to 15 knots tending east to northeasterly below 10 knots during the afternoon and evening.
Seas
Below 1 metre.
1st Swell
Southwesterly 4 metres.
Weather
Mostly sunny.
Weather Situation
A high pressure system centred south of the Bight extends a ridge across the south of SA. The main high centre will gradually move eastwards to be centred to the east of SA later on Friday. A trough over the interior of WA will remain stationary but will weaken later Friday. Another low pressure trough will approach from the west on Saturday and move across SA on Sunday then a cold front will move across southern coasts later Monday. An upper disturbance will move over the far west on Monday.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Number One Rocks Temperature Statistics View More

September Temperature

Mount Gambier Airport (40km)

  • Lowest 8 September, 2026

    0.3 °C
  • Average September

    10.8 °C
  • Highest 1 September, 2026

    18.3 °C

Climate (2021–2026)

Mount Gambier Airport (40km)

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  • Average Low 2021–2026

    8.9 °C
  • Average 2021–2026

    13.7 °C
  • Average High 2021–2026

    20 °C
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