Portland Bay Weather Forecast
- 17
- 23
Possible shower
- 14
- 19
Possible shower
- 12
- 20
Partly cloudy
- 9
- 26
Mostly sunny
- 12
- 23
Partly cloudy
- 13
- 22
Cloudy
- 12
- 22
Partly cloudy
Today 31 Jan South West
Partly cloudy. The chance of fog early this morning. Medium chance of showers. The chance of a thunderstorm. The chance of smoke haze in the northeast late this afternoon and evening. Winds south to southeasterly and light tending south to southwesterly 15 to 25 km/h in the middle of the day then increasing to 25 to 35 km/h in the early afternoon. Daytime maximum temperatures 24 to 32.
West Victoria Coastal Waters
SA-Vic Border to Cape Otway- Wind
- Southeasterly about 10 knots tending southeast to southwesterly 10 to 15 knots in the morning then tending southwesterly in the early afternoon. Winds reaching up to 20 knots in the far west in the evening.
- Seas
- Around 1 metre.
- 1st Swell
- Southwesterly 1.5 to 2 metres, decreasing to 1.5 metres during the afternoon.
- Weather
- Cloudy. The chance of a thunderstorm during the morning and afternoon.
- Weather Situation
- A low pressure trough lies through northeastern Victoria ahead of a strong ridge of high pressure pushing in from the west late today, with a south to southeasterly flow developing across the entire state by Sunday. The ridge lingers on Monday as the high centre moves east, out to the Tasman Sea by Tuesday. Another trough develops in the northwest by late Tuesday.
Portland Bay Temperature Statistics View More
January Temperature
Portland Airport (25km)
Lowest 5 January, 2026
5.7 °CAverage January
17.1 °CHighest 24 January, 2026
39.3 °C
Climate (2021–Present)
Portland Airport (25km)
Average Low 2021–2026
9.7 °CAverage 2021–2026
13.4 °CAverage High 2021–2026
18.1 °C