Blanche Bay Weather Forecast

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    Shower

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    Shower

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    Shower

Today 31 May Lower South East

Cloudy. Slight chance of a shower, becoming less likely in the afternoon. Winds southwesterly 20 to 30 km/h tending west to southwesterly 15 to 20 km/h in the early afternoon then becoming light in the late afternoon. Daytime maximum temperatures around 15.

Lower South East Coastal Waters

Cape Jaffa to SA-Vic Border
Wind
Southwesterly 15 to 20 knots, reaching up to 30 knots south of Beachport in the late 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
Southwesterly 3 to 4 metres.
Weather
Cloudy.
Weather Situation
A weak high pressure system moves across from the west today. A significant low pressure system moves over waters to the south of SA on Monday and Tuesday reaching western Bass Strait Tuesday afternoon. A another low pressure moves over waters to the southeast on Wednesday. A high pressure system follows the low moving across northern parts of SA later in the week.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Blanche Bay Temperature Statistics View More

May Temperature

Mount Gambier Airport (35km)

  • 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 (35km)

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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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