Half Moon Bay Weather Forecast
- 16
- 23
Possible shower or storm
- 11
- 20
Windy. Cloudy
- 10
- 17
Cloudy
- 11
- 19
Partly cloudy
- 11
- 32
Sunny
- 16
- 32
Mostly sunny
- 15
- 27
Partly cloudy
Today 13 Dec Geelong and Surf Coast
Partly cloudy. Slight chance of a shower. The chance of a thunderstorm during the morning and afternoon, possibly severe with damaging winds, large hail and heavy rain which may lead to flash flooding during this afternoon and early evening. Winds northwest to southwesterly 15 to 20 km/h tending south to southwesterly 20 to 30 km/h in the morning then becoming light in the late evening.
Port Phillip Local Waters
- Wind
- North to northwesterly 10 to 15 knots shifting south to southwesterly during the morning and reaching 15 to 20 knots during the late afternoon and evening.
- Seas
- Around 1 metre.
- Weather
- Partly cloudy. The chance of a thunderstorm during the morning and afternoon.
- Weather Situation
- A high pressure system lies over the Tasman Sea and extends a broad ridge over eastern Bass Strait. A low pressure trough extends across the SA border into western Victoria and Bass Strait. The trough is expected to slowly move east over Victoria and Bass Strait during Saturday, entering from the west in the early morning and moving into eastern Coastal waters by the evening. The next cold front will cross Bass Strait during Sunday with a new high pressure ridge developing in its wake on Monday.
Half Moon Bay Temperature Statistics View More
December Temperature
Avalon Airport (23km)
Lowest 7 December, 2025
6.6 °CAverage December
16.3 °CHighest 4 December, 2025
34.8 °C
Climate (2020–Present)
Avalon Airport (23km)
Average Low 2020–2025
9.6 °CAverage 2020–2025
14.5 °CAverage High 2020–2025
20.4 °C