The Blowhole Weather Forecast
- 12
- 17
Rain
- 12
- 18
Showers increasing
- 12
- 16
Shower or two
- 13
- 17
Shower or two. Windy
- 11
- 16
Shower or two
- 12
- 17
Cloudy
- 12
- 20
Sunny
Today 21 Dec South West
Cloudy. Very high chance of rain, becoming less likely this evening. The chance of a thunderstorm in the morning and early afternoon. Winds east to southeasterly 15 to 20 km/h tending south to southeasterly in the middle of the day then turning southwesterly 25 to 35 km/h in the early afternoon. Daytime maximum temperatures between 17 and 22.
Central Victoria Coastal Waters
Cape Otway to Wilsons Promontory- Wind
- Variable about 10 knots becoming east to southeasterly 15 to 20 knots in the middle of the day then shifting southwesterly 15 to 25 knots in the late afternoon. Winds reaching up to 30 knots in the evening.
- Seas
- Below 1 metre, increasing to 1 to 2 metres during the afternoon.
- 1st Swell
- Southwesterly 1 to 1.5 metres, decreasing to around 1 metre during the afternoon.
- Weather
- Cloudy. 90% chance of rain. The chance of a thunderstorm during this afternoon and early evening.
- Weather Situation
- A low pressure system south of the Bight will move east and combine with a broad trough over western Victoria early Sunday. The low pressure system will then deepen and slowly move southeast across the State during Sunday to clear into eastern Bass Strait late Sunday. A high pressure ridge then builds across Victoria and Bass Strait during Monday. A weak cold front crosses Bass Strait during late Monday and early Tuesday with the ridge re-establishing itself from Tuesday to Thursday.
The Blowhole Temperature Statistics View More
December Temperature
Cape Otway (13km)
Lowest 1 December, 2025
9.1 °CAverage December
15.8 °CHighest 18 December, 2025
29.9 °C
Climate (2020–Present)
Cape Otway (13km)
Average Low 2020–2025
11.7 °CAverage 2020–2025
14.2 °CAverage High 2020–2025
17.3 °C