Portarlington Weather Forecast
- 5
- 17
Clear
- 7
- 25
Partly cloudy
- 14
- 23
Shower or two
- 11
- 16
Showers
- 9
- 16
Cloudy
- 8
- 19
Partly cloudy
- 11
- 25
Late shower or two
Today 23 Sep Geelong and Surf Coast
Clear. Light winds.
Port Phillip Local Waters
- Wind
- Variable about 10 knots.
- Seas
- Below 0.5 metres.
- Weather
- Clear.
- Weather Situation
- A high pressure system is expected to sit over the Tasman Sea for the rest of the week, directing a warm northerly airstream over Victoria. A trough will cross southern Victoria on Friday. A strong high pressure system south of the Bight will slowly move east during the weekend.
Portarlington Temperature Statistics View More
September Temperature
Avalon Airport (17km)
Lowest 18 September, 2026
0.7 °CAverage September
12.7 °CHighest 20 September, 2026
30.4 °C
Climate (2021–2026)
Avalon Airport (17km)
Average Low 2021–2026
9.8 °CAverage 2021–2026
14.6 °CAverage High 2021–2026
20.6 °C