Portland Offshore Weather Forecast
- 11
- 18
Showers. Possible storm
- 8
- 13
Cloudy
- 7
- 15
Partly cloudy
- 7
- 17
Partly cloudy
- 9
- 20
Partly cloudy
- 12
- 21
Shower or two
- 10
- 21
Possible shower
Today 26 Oct South West
Cloudy. Very high chance of showers. A thunderstorm likely during the morning and afternoon. Thunderstorms possibly severe with damaging winds, large hail and heavy rain which may lead to flash flooding in the northeast during this afternoon and early evening. Winds north to northeasterly 15 to 20 km/h shifting westerly 20 to 30 km/h in the middle of the day. Daytime maximum temperatures around 19.
West Victoria Coastal Waters
SA-Vic Border to Cape Otway- Wind
- East to northeasterly 15 to 20 knots tending northwest to southwesterly in the early afternoon then tending south to southeasterly in the evening. Winds reaching up to 30 knots in the far west in the evening.
- Seas
- 1 to 1.5 metres, decreasing to 1 metre during the morning, then increasing to 1 to 2 metres during the afternoon.
- 1st Swell
- South to southwesterly 1 to 2 metres.
- Weather
- Cloudy. 90% chance of showers. The chance of a thunderstorm during the morning and afternoon.
- Weather Situation
- A high pressure ridge over eastern and southern Victoria will weaken and move eastwards as a low pressure system deepens over the Bight. This low will move over Bass Strait throughout today and will extend a cold front over Victoria. A broad trough will extend over Victoria early next week from a low pressure system centred to the north and a high pressure ridge will move over Tasmania. The ridge will move over Victoria on Thursday ahead of another low on Friday.
Portland Offshore Temperature Statistics View More
October Temperature
Cape Nelson Lighthouse (9km)
Lowest 2 October, 2025
8.2 °CAverage October
13.5 °CHighest 16 October, 2025
26 °C
Climate (2020–Present)
Cape Nelson Lighthouse (9km)
Average Low 2020–2025
11.8 °CAverage 2020–2025
14.3 °CAverage High 2020–2025
17.6 °C