Portland Bay Marina Weather Forecast
- 10
- 14
Showers
- 7
- 15
Showers increasing
- 7
- 14
Showers easing
- 9
- 15
Showers
- 9
- 15
Shower or two
- 7
- 14
Possible shower
- 7
- 15
Partly cloudy
Today 10 Aug South West
Cloudy. Very high chance of showers, becoming less likely in the late afternoon and evening. Winds south to southwesterly 15 to 25 km/h increasing to 35 km/h before tending west to southwesterly 20 to 30 km/h during the day. Daytime maximum temperatures between 12 and 15.
West Victoria Coastal Waters
SA-Vic Border to Cape Otway- Wind
- Southerly 15 to 25 knots, reaching up to 30 knots in the afternoon. Winds turning west to southwesterly 15 to 20 knots during the afternoon and evening.
- Seas
- Around 1 metre, increasing to 1 to 2 metres during the morning.
- 1st Swell
- Southwesterly 2.5 to 3 metres, increasing to 3 to 4 metres during the afternoon.
- Weather
- Partly cloudy. 90% chance of showers.
- Weather Situation
- A low pressure system over western Victoria will then slowly move over the state towards eastern Bass Strait during this morning, while extending a trough over western and central Victoria during this afternoon and early evening. A ridge of high pressure will build over Victoria on Tuesday, ahead of a cold front to cross the state early on Wednesday. A high pressure system is expected to build over the Bight on Thursday and extend a ridge across Victoria.
Portland Bay Marina Temperature Statistics View More
August Temperature
Cape Nelson Lighthouse (11km)
Lowest 1 August, 2026
5.6 °CAverage August
10.9 °CHighest 2 August, 2026
15.7 °C
Climate (2021–2026)
Cape Nelson Lighthouse (11km)
Average Low 2021–2026
11.9 °CAverage 2021–2026
14.4 °CAverage High 2021–2026
17.6 °C