Portland Bay Marina Weather Forecast
- 10
- 17
Showers
- 7
- 15
Showers
- 10
- 16
Showers easing
- 10
- 16
Shower or two
- 10
- 16
Shower or two
- 10
- 17
Cloudy
- 9
- 18
Mostly sunny
Today 6 May South West
Cloudy. Very high chance of showers, most likely from late this morning. Snow falling above 800 metres. The chance of a thunderstorm in the south later tonight. Possible small hail this evening. Winds northwesterly 20 to 30 km/h turning southwesterly in the late afternoon. Daytime maximum temperatures around 16.
West Victoria Coastal Waters
SA-Vic Border to Cape Otway- Wind
- West to northwesterly 20 to 25 knots turning southwesterly in the early afternoon. Winds reaching up to 30 knots during the afternoon and evening.
- Seas
- 1.5 to 2 metres, increasing to 2 to 3 metres during the afternoon.
- 1st Swell
- Southwesterly 2.5 to 3 metres, increasing to 3 to 4 metres by early evening.
- Weather
- Cloudy. Near 100% chance of showers. The chance of a thunderstorm this evening. Possible small hail late this afternoon and evening.
- Weather Situation
- A weak ridge of high pressure extending over Victoria will be cleared on Wednesday as a cold front crosses over Victoria. This front is expected to develop a low pressure system off the east coast on Thursday which will move into the Tasman Sea on Friday. The high pressure ridge will begin to redevelop from the west on the weekend with the high pressure centre sitting well south of the Bight.
Portland Bay Marina Temperature Statistics View More
May Temperature
Cape Nelson Lighthouse (11km)
Lowest 3 May, 2026
12.2 °CAverage May
16.9 °CHighest 1 May, 2026
28.1 °C
Climate (2021–Present)
Cape Nelson Lighthouse (11km)
Average Low 2021–2026
11.8 °CAverage 2021–2026
14.3 °CAverage High 2021–2026
17.6 °C