Average Rainfall in Australian Capital Cities
People are often surprised when they realise just how much water falls on their roof areas as rain. It’s a bountiful resource that most of us don’t tap (no pun intended!), at a time when society as a whole is faced with acute water shortages.
The calculation of how much rain water you can collect in is really pretty6 simple…
For each millimetre of rain that fall on each square metre of roof, get one litre of water.
That means that if you have 150 square metres of roof, and your annual rainfall is 1000 mm., then you can collect 150,000 litres a year. Deduct 5-10% for evaporation, absorbtion, leakage etc., and what you’ve got left is… a lot! Water tanks in urban areas make sense, and we’ll be happy to help you choose a quality one that will suit your home, and your needs.
To help you work out how much water you can collect, and at what times of the year, you need to know the average rainfall pattern for your city. We have collected the official information from the Australian Bureau of Meteorology for you, so just click on the link for your capital city.
Sydney, NSW Average Rainfall
Melbourne, Victoria Average Rainfall
Adelaide, South Australia Average Rainfall
Perth, WA Average Rainfall
Hobart, TAS Average Rainfall. Not linked yet
Darwin, NT Average Rainfall. Not linked yet
We hope you find the rainfall information useful.
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