MacDonnell Bay Weather Forecast
- 5
- 18
Partly cloudy
- 8
- 23
Shower
- 12
- 18
Cloudy
- 10
- 25
Partly cloudy
- 16
- 24
Partly cloudy
- 11
- 23
Partly cloudy
- 13
- 27
Partly cloudy
Today 18 Apr Lower South East
Sunny. Light winds. Daytime maximum temperatures around 20.
Lower South East Coastal Waters
Cape Jaffa to SA-Vic Border- Wind
- Northeasterly 10 to 15 knots, reaching up to 20 knots offshore in the late evening.
- Seas
- Below 1 metre, increasing to around 1 metre offshore.
- 1st Swell
- Southwesterly 1.5 to 2 metres, decreasing to 1 to 1.5 metres by early evening.
- Weather
- Mostly clear.
- Weather Situation
- A high pressure system centred west of Tasmania extends a ridge over western Victoria. A cold front over the far west of SA will weaken as it moves eastwards over central and eastern parts on Sunday morning. The high will move eastwards to be centred southeast of Tasmania later Sunday but will continue to extend a ridge over SA early next week. Another front will move across the south of SA late Tuesday and early Wednesday then another high will move across waters to the south during Wednesday.
MacDonnell Bay Temperature Statistics View More
April Temperature
Mount Gambier Airport (34km)
Lowest 4 April, 2026
3.6 °CAverage April
14 °CHighest 5 April, 2026
25.3 °C
Climate (2021–Present)
Mount Gambier Airport (34km)
Average Low 2021–2026
8.8 °CAverage 2021–2026
13.7 °CAverage High 2021–2026
20 °C