Gerloff Bay Weather Forecast
- 5
- 20
Partly cloudy
- 13
- 22
Sunny
- 12
- 21
Shower
- 9
- 14
Cloudy
- 4
- 17
Partly cloudy
- 6
- 20
Cloudy
- 9
- 22
Shower
Today 18 Sep Lower South East
Sunny. Winds northerly 15 to 25 km/h tending northwesterly 20 to 30 km/h in the morning. Daytime maximum temperatures in the low 20s.
Lower South East Coastal Waters
Cape Jaffa to SA-Vic Border- Wind
- Northwesterly 15 to 20 knots, reaching up to 30 knots south of Beachport in the early afternoon.
- Seas
- 1 to 1.5 metres, increasing to 1.5 to 2 metres during the morning.
- 1st Swell
- Southwesterly 2.5 to 3 metres, tending westerly 2.5 to 3 metres later in the evening.
- Weather
- Mostly sunny.
- Weather Situation
- A strong high pressure system centred over Victoria will maintain a ridge across SA as it drifts slowly over NSW. A cold front will then approach from the west late Saturday and move across SA on Sunday, before another ridge pushes in behind the front. The associated high will then move eastwards across waters south from Monday.
Gerloff Bay Temperature Statistics View More
September Temperature
Mount Gambier Airport (37km)
Lowest 8 September, 2026
0.3 °CAverage September
11.2 °CHighest 12 September, 2026
21.8 °C
Climate (2021–2026)
Mount Gambier Airport (37km)
Average Low 2021–2026
8.9 °CAverage 2021–2026
13.7 °CAverage High 2021–2026
20.1 °C