Undertow Bay Weather Forecast
- 15
- 22
Showers. Storm clearing
- 12
- 18
Shower or two
- 9
- 19
Showers increasing
- 12
- 19
Shower or two
- 10
- 19
Showers
- 10
- 17
Possible shower
- 11
- 19
Shower or two
Today 31 Oct Wonthaggi
Cloudy. Very high chance of showers, becoming less likely late this afternoon and evening. A thunderstorm likely during the morning and afternoon. Winds northerly 15 to 25 km/h tending northwesterly 25 to 35 km/h in the middle of the day then tending westerly 25 to 40 km/h in the early afternoon.
Central Victoria Coastal Waters
Cape Otway to Wilsons Promontory- Wind
- Northerly 15 to 25 knots, reaching up to 30 knots in the late morning and afternoon. Winds turning westerly in the late morning.
- Seas
- 1 to 1.5 metres, increasing to 1.5 to 2.5 metres during the morning.
- 1st Swell
- Southwesterly 1 to 1.5 metres.
- Weather
- Cloudy. 95% chance of showers. The chance of a thunderstorm in the morning and early afternoon.
- Weather Situation
- A low pressure trough approaching from the west will move over western Victoria early today, reaching central districts around the middle of the day before crossing eastern Victoria during the afternoon and evening. A weak high pressure system will rapidly cross Victoria on Sunday as a low pressure system crosses South Australia. The low is forecast to move over northwestern Victoria during Monday before clearing eastern Victoria early on Tuesday as a high pressure ridge extends across the State.
Undertow Bay Temperature Statistics View More
October Temperature
Wonthaggi (7 km)
Lowest 15 October, 2026
3 °CAverage October
13.3 °CHighest 23 October, 2026
30.4 °C
Climate (2021–2026)
Wonthaggi (7 km)
Average Low 2021–2026
10.2 °CAverage 2021–2026
12.9 °CAverage High 2021–2026
20 °C