It's easy to underestimate the impacts of heatwaves in Hobart. We're known for our cool climate and snow on the mountain.
But in summer, when heatwaves hit, they hit hard, and they can be life threatening to the most vulnerable - those aged 65 years and over, five years and under, people with chronic health conditions or disability, people living in low socio-economic areas or living rough, outdoor workers and people who are pregnant or breastfeeding.
Data from the Menzies Institute for Medical Research at the University of Tasmania shows that statewide there is a 6 per cent increase in ambulance dispatches and a 5 per cent increase in emergency department presentations during heatwaves.
UTAS research also found that statewide there is an 8 per cent increase in mortality during heatwaves.
Hobart suburbs most at risk
And now a new report has revealed which suburbs and communities in Hobart are most at risk from heatwaves, which are predicted to increase under climate change.
Commissioned by the City of Hobart, the Geoneon report used land-surface temperatures as well as residential demographics such as age and economic status to develop its findings.
The report found New Town, Sandy Bay and Lenah Valley most susceptible to rising temperatures and that nearly a quarter of all Hobart homes fall within the highest risk categories.
The number of houses most affected centre around urban areas, clearly illustrating the urban heat island effect.
Download the report
Hot, hot, hot
Some Hobart suburbs are 1-7° Celsius hotter than surrounding areas due to the urban heat island effect, where roads and concrete buildings retain and amplify the heat produced by long, hot summer days.
And while on average Hobart swelters through seven days a year of temperatures over 30 degrees Celsius under climate change that figure will jump to ten days a year by 2050.
The City of Hobart is actively addressing urban heat risks by identifying areas for increased tree canopy, investing in climate resilience and exploring best-practice responses from other cities for local implementation.
Lord Mayor Anna Reynolds said understanding and reducing the urban heat risk is crucial for protecting communities.
"It is so important we help educate our community about how they can take action to reduce the impacts of heatwaves in Hobart on themselves, friends and family," Councillor Reynolds said.
"It's also crucial we counteract rising heatwaves by increasing Hobart's tree canopy cover and using building materials and built infrastructure that cools our cities and homes during the hotter months of the year."
Beat the heat
Individuals can also take simple steps to protect themselves and others during heatwaves, such as staying hydrated, checking on vulnerable neighbours and seeking out cool spaces.
Top tips for playing it cool in extreme heat:
- Check local weather forecasts so you know when hot and humid weather is coming and can plan ahead.
- Find ways to make your home or building cooler. Light coloured window coverings, awnings and shade cloth can help cool homes and buildings. If renovating, lighter coloured roofs are shown to keep houses cooler than common colours such as black or navy.
- Create more green space near your house.
- Check fans, air-conditioners, refrigerators and freezers are working properly before the beginning of summer.
- Ensure you have enough food, medicine and other supplies to avoid going out during a heatwave or if electricity supply is interrupted.
- If you have a medical condition, ask your doctor for advice on how to manage the heat.
- Make a list of family, friends and neighbours you might want to check on and ensure you have their current contact details.
- Think about your pets and how you will keep them healthy, hydrated and cool. If you have concerns, seek advice from your vet.
Know the signs and symptoms
Heat related illness can be life-threatening. Know the signs and symptoms, and your treatment options – seek medical advice from your GP or by calling healthdirect on 1800 022 222.
On a hot day, if you or someone near you is very unwell and does not respond to cooling and rehydration quickly, call triple zero and ask for an ambulance.
Find out more on the Tasmanian Department of Health website.