Cape Northumberland Weather Forecast

    • 8
    • 14

    Shower

    • 10
    • 14

    Shower

    • 8
    • 14

    Cloudy

    • 3
    • 15

    Partly cloudy

    • 6
    • 14

    Partly cloudy

    • 7
    • 15

    Shower

    • 7
    • 15

    Shower

Today 3 Jul Lower South East

Cloudy. Very high chance of showers, most likely in the early morning. Damaging winds possible near the coast. Winds westerly 30 to 45 km/h turning southwesterly 25 to 35 km/h during the morning then tending west to southwesterly 15 to 25 km/h in the early afternoon. Overnight temperatures falling to around 7 with daytime temperatures reaching around 14.

Lower South East Coastal Waters

Cape Jaffa to SA-Vic Border
Wind
Westerly 25 to 30 knots, reaching up to 35 knots during the morning. Winds tending southwesterly 20 to 30 knots before dawn then decreasing to 15 to 25 knots in the middle of the day.
Seas
2.5 to 4 metres, decreasing to 1 to 2 metres during the afternoon.
1st Swell
Westerly 7 to 8 metres, tending southwesterly 6 to 8 metres during the morning, then decreasing to 5 to 6 metres during the afternoon.
Weather
Cloudy. 95% chance of showers. The chance of a thunderstorm south of Port MacDonnell in the early morning.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Cape Northumberland Temperature Statistics View More

July Temperature

Mount Gambier Airport (36km)

  • Lowest 2 July, 2026

    9.8 °C

  • Average July

    11.7 °C

  • Highest 1 July, 2026

    16.7 °C

Climate (2021–2026)

Mount Gambier Airport (36km)

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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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