Cape Northumberland Weather Forecast

    • 11
    • 15

    Shower

    • 7
    • 15

    Storm

    • 11
    • 16

    Shower

    • 11
    • 15

    Shower

    • 9
    • 14

    Shower

    • 10
    • 17

    Shower

    • 11
    • 17

    Shower

Today 31 May Lower South East

Cloudy. High chance of showers in the south, medium chance elsewhere. Winds west to southwesterly 20 to 30 km/h becoming light in the late afternoon. Overnight temperatures falling to between 7 and 11 with daytime temperatures reaching around 15.

Lower South East Coastal Waters

Cape Jaffa to SA-Vic Border
Wind
Southwesterly 15 to 25 knots, reaching up to 30 knots south of Beachport during the morning. Winds turning west to northwesterly below 10 knots in the evening.
Seas
1.5 to 2.5 metres, decreasing to 1 metre by early evening.
1st Swell
Westerly 3 metres, tending southwesterly 3 to 4 metres during the morning.
Weather
Cloudy. 70% chance of showers.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Cape Northumberland Temperature Statistics View More

May Temperature

Mount Gambier Airport (36km)

  • Lowest 22 May, 2026

    3.2 °C

  • Average May

    13.3 °C

  • Highest 1 May, 2026

    28.5 °C

Climate (2021–Present)

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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