What to expect this summer
While our lifestyles have been somewhat ‘unprecedented’ over the past 12 months, the trend appears it will continue into the summer with some particularly peculiar summer weather.
With La Niña, Australians on the east coast can expect:
- Increased rainfall
- Cooler daytime temperatures (south of the tropics)
- Warmer overnight temperatures (in the north)
- A shift in temperature extremes
- Decreased frost risk
- Greater tropical cyclone numbers
Victorians can expect cooler than average daytime temperatures. Average water temperatures will be cooler, too, so make sure you pack your wetsuit when you go to the beach.
Persistent south-east to north-westerly winds are more likely to affect northern parts of Australia, with a heightened risk of cyclones. La Niña is also associated with earlier first rains of the northern wet season, which you might need to consider if you have holidays planned in Northern Territory and Queensland.
Despite this shift in weather, there's no need to panic. This year's event is not predicted to be as strong as the 2010-12 event and may even be weaker than the 2020-21 La Niña event.
The BoM says every La Niña has different impacts and other climate drivers influence the weather as well, so ensuring your home insurance policy is up to date can help mitigate any damage caused to your home or contents by unpredictable weather.
This La Niña is expected to last until late summer or early autumn.
Preparing for flooding
Records show that rainfall is 20 per cent higher than average for December-March during La Niña years. This means eastern Australia faces a much higher risk of severe flooding over summer.
Victorians should be wary and check if your property is at a high risk of flooding.
Depending on where you live, this could be with the local council, catchment management authority, water authority, or territory government. Flood-related planning and building controls only apply to the highest-risk areas, so ask about the risk from flood events that are potentially more widespread and severe than usual.
If you need to evacuate during a flood, take all safety precautions and listen to the advice of your local emergency services, particularly when driving. Never drive into floodwaters.
Floodwaters that reach the bottom of a car door can be strong enough to carry a vehicle away. Find out how to prepare for storms and floods and download our flood risk factsheet.