Riddoch Bay Weather Forecast
- 6
- 15
Clear
- 3
- 17
Partly cloudy
- 7
- 21
Sunny
- 12
- 19
Showers
- 11
- 17
Shower or two
- 10
- 14
Possible shower
- 7
- 15
Cloudy
Today 10 Sep Mount Gambier
Clear. Light winds.
Lower South East Coastal Waters
Cape Jaffa to SA-Vic Border- Wind
- South to southeasterly about 10 knots increasing to 10 to 15 knots in the late afternoon then becoming east to southeasterly about 10 knots in the late evening.
- Seas
- Below 1 metre.
- 1st Swell
- Southwesterly 4 to 5 metres.
- Weather
- Clear.
- Weather Situation
- A high pressure system centred south of the Bight extends a ridge across the south of SA. The main high centre will gradually move eastwards to be centred to the east of SA on Friday. A trough over the interior of WA will remain stationary but will weaken later Friday. Another low pressure trough will approach from the west on Saturday and move across SA on Sunday then a cold front will move across southern coasts later Monday. An upper disturbance will move over the far west on Monday.
Riddoch Bay Temperature Statistics View More
September Temperature
Mount Gambier Airport (33km)
Lowest 8 September, 2026
0.3 °CAverage September
11.1 °CHighest 1 September, 2026
18.3 °C
Climate (2021–2026)
Mount Gambier Airport (33km)
Average Low 2021–2026
8.9 °CAverage 2021–2026
13.7 °CAverage High 2021–2026
20 °C