The Bureau of Meteorology says it expects about five tropical cyclones to form off the Western Australian coast this season, including one or two that could hit the mainland.
Today, the bureau predicted an average to below average cyclone season in the official forecast for the north-west.
One of those cyclones between November and April is expected to be severe.
The bureau's Andrew Burton says regardless of the forecast, people need to make the appropriate preparations.
He says the prediction is only an estimate and it is impossible to determine exactly what will happen.
"In the 2006/2007 season we had the tragedy of Tropical Cyclone George," he said.
"That season overall was very quiet, so that really drives home that message that it's not about the numbers.
"We need to be prepared every season for that one severe tropical cyclone that could really cause a lot of havoc.
"Really, the most important message is none of this really matters much at all for residents because when it comes down to it, a bad season is the one where a severe cyclone hits your community.
"Unfortunately, there's nobody in the world that can tell you whether this season it's your turn."
© ABC 2012
17:01 EST Sydney's offshore Sea Surface Temperatures (SST's) have remained above 21 degrees for the last four days.