Merri Island Weather Forecast
- 11
- 16
Possible shower
- 8
- 17
Partly cloudy
- 8
- 17
Showers
- 9
- 17
Showers easing
- 8
- 17
Partly cloudy
- 6
- 17
Partly cloudy
- 7
- 17
Shower or two
Today 17 May Warrnambool
Partly cloudy. Medium chance of showers, becoming less likely in the late afternoon and evening. Winds southwesterly 15 to 25 km/h tending southerly 15 to 20 km/h in the late afternoon then becoming light in the evening.
West Victoria Coastal Waters
SA-Vic Border to Cape Otway- Wind
- Southerly 10 to 15 knots.
- Seas
- Below 1 metre.
- 1st Swell
- Southwesterly 2.5 to 3 metres.
- Weather
- Partly cloudy.
- Weather Situation
- A high pressure ridge over the far east weakens as a slow moving trough approaches the western border. This trough will slowly cross over the state, reaching central parts late today and clearing eastwards into the Tasman by Monday afternoon. A new weak ridge develops in the west following the trough but is pushed over the north as a series of weak cold fronts cross to the south early next week. By the middle of the weak the high pressure ridge is expected to extend broadly across Victoria.
Merri Island Temperature Statistics View More
May Temperature
Warrnambool Airport (12km)
Lowest 12 May, 2026
4.8 °CAverage May
14 °CHighest 1 May, 2026
28.3 °C
Climate (2021–Present)
Warrnambool Airport (12km)
Average Low 2021–2026
8.8 °CAverage 2021–2026
13.5 °CAverage High 2021–2026
19.1 °C