Cape Northumberland Weather Forecast

    • 12
    • 17

    Cloudy

    • 10
    • 15

    Shower

    • 8
    • 16

    Cloudy

    • 5
    • 19

    Cloudy

    • 11
    • 26

    Partly cloudy

    • 14
    • 20

    Shower

    • 11
    • 21

    Shower

Today 25 Sep Lower South East

Partly cloudy. Slight chance of a shower. Winds south to southwesterly 15 to 20 km/h becoming light in the evening.

Lower South East Coastal Waters

Cape Jaffa to SA-Vic Border
Wind
Southerly 10 to 15 knots turning southeasterly in the evening.
Seas
Below 1 metre.
1st Swell
Southwesterly 1.5 to 2 metres.
Weather
Partly cloudy.
Weather Situation
A trough extends over central Australia. A strong high pressure system extends a ridge across southern SA this weekend and pushes the trough into northern SA. The high moves into the Tasman Sea early next week, with the trough shifting west towards the WA border.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Cape Northumberland Temperature Statistics View More

September Temperature

Mount Gambier Airport (36km)

  • Lowest 22 September, 2026

    -0.3 °C

  • Average September

    11.7 °C

  • Highest 19 September, 2026

    25.8 °C

Climate (2021–2026)

Mount Gambier Airport (36km)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    8.9 °C

  • Average 2021–2026

    13.7 °C

  • Average High 2021–2026

    20.1 °C
Get WillyWeather+ to remove ads