Nene Valley Weather Forecast

    • 17
    • 24

    Cloudy

    • 12
    • 21

    Cloudy

    • 12
    • 29

    Partly cloudy

    • 15
    • 28

    Shower

    • 13
    • 19

    Shower

    • 9
    • 15

    Shower

    • 8
    • 14

    Shower

Today 20 Oct Lower South East

Partly cloudy. Slight chance of a shower. The chance of a thunderstorm, possibly severe with heavy rain which may lead to flash flooding in the north. Winds north to northwesterly 15 to 25 km/h shifting south to southwesterly 15 to 20 km/h in the afternoon. Daytime maximum temperatures in the low to mid 20s.

Lower South East Coastal Waters

Cape Jaffa to SA-Vic Border
Wind
North to northwesterly 10 to 15 knots shifting south to southwesterly early in the morning then decreasing to about 10 knots in the evening.
Seas
Below 1 metre.
1st Swell
Southwesterly 2 to 2.5 metres.
Weather
Cloudy. The chance of a thunderstorm during the morning and afternoon.
Weather Situation
A trough of low pressure over southeastern South Australia lingers in the east, before weakening from Thursday. A slow moving high pressure system in the Tasman Sea re-establishes a ridge across southern parts from Wednesday. Another series of troughs move into western parts on Thursday and broadly across SA on Friday.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Nene Valley Temperature Statistics View More

October Temperature

Mount Gambier Airport (35 km)

  • Lowest 7 October, 2026

    2.8 °C

  • Average October

    14.2 °C

  • Highest 18 October, 2026

    27.5 °C

Climate (2021–2026)

Mount Gambier Airport (35 km)

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  • Average Low 2021–2026

    8.9 °C

  • Average 2021–2026

    13.8 °C

  • Average High 2021–2026

    20.1 °C
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