Geltwood Beach Weather Forecast
- 12
- 19
Shower
- 12
- 17
Shower
- 10
- 14
Cloudy
- 9
- 14
Cloudy
- 6
- 15
Cloudy
- 5
- 20
Sunny
- 10
- 22
Sunny
Today 13 Sep Lower South East
Cloudy. Very high chance of showers, becoming less likely in the late afternoon and evening. The chance of a thunderstorm in the late morning and afternoon. Winds northerly 20 to 30 km/h turning west to northwesterly 15 to 25 km/h in the late afternoon. Daytime maximum temperatures around 20.
Lower South East Coastal Waters
Cape Jaffa to SA-Vic Border- Wind
- North to northwesterly 10 to 15 knots, reaching up to 20 knots north of Port MacDonnell during the afternoon and evening. Winds turning westerly in the evening.
- Seas
- 1 to 1.5 metres.
- 1st Swell
- Southwesterly 2 to 2.5 metres.
- Weather
- Cloudy.
- Weather Situation
- A high pressure ridge builds across much of SA, as a cold front slips across southern coasts late Monday into early Tuesday. A high pressure system will then move across waters to the south throughout the week to be centred over Victoria by Thursday. A low pressure trough in the interior of WA may extend into far western parts at times before weakening by late Tuesday.
Geltwood Beach Temperature Statistics View More
September Temperature
Mount Gambier Airport (55km)
Lowest 8 September, 2026
0.3 °CAverage September
11 °CHighest 11 September, 2026
19.4 °C
Climate (2021–2026)
Mount Gambier Airport (55km)
Average Low 2021–2026
8.9 °CAverage 2021–2026
13.7 °CAverage High 2021–2026
20 °C