Cape Northumberland Weather Forecast

    • 10
    • 16

    Partly cloudy

    • 6
    • 18

    Cloudy

    • 7
    • 24

    Sunny

    • 14
    • 22

    Shower

    • 12
    • 17

    Shower

    • 8
    • 20

    Shower

    • 10
    • 17

    Shower

Today 6 Oct Lower South East

Partly cloudy. Slight chance of a shower in the north in the late morning and early afternoon. Near zero chance of rain elsewhere. Winds southwesterly 25 to 35 km/h tending southerly 20 to 30 km/h in the early afternoon then becoming light in the evening. Daytime maximum temperatures around 17.

Lower South East Coastal Waters

Cape Jaffa to SA-Vic Border
Wind
Southwesterly 15 to 20 knots, reaching up to 25 knots south of Beachport in the late morning. Winds turning south to southeasterly 10 to 15 knots in the late afternoon.
Seas
1 to 2 metres, decreasing to 1 metre by early evening.
1st Swell
Southwesterly 4 metres.
Weather
Partly cloudy.
Weather Situation
A high pressure system southwest of SA extends a ridge over much of the state, as a cold front clips the southeast early Tuesday. The high will quickly move in behind the front and maintain a ridge over SA as it moves to the east of Tasmania by Thursday. A strong cold front is then expected move into the Bight later on Thursday and move east across the rest of SA on Friday and early Saturday.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Cape Northumberland Temperature Statistics View More

October Temperature

Mount Gambier Airport (36 km)

  • Lowest 4 October, 2026

    6 °C

  • Average October

    12.1 °C

  • Highest 4 October, 2026

    17.2 °C

Climate (2021–2026)

Mount Gambier Airport (36 km)

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  • Average Low 2021–2026

    8.9 °C

  • Average 2021–2026

    13.7 °C

  • Average High 2021–2026

    20.1 °C
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