Daylight saving should not be considered for another 20 years in Western Australia, Premier Colin Barnett says.
Sandgropers rejected daylight saving in WA's fourth referendum on the issue in successive decades with the No vote winning with a 55.49 per cent majority.
The controversial issue has polarised the state for years, with business groups running an aggressive campaign for the Yes vote and farmers hitting back with a strong No case.
It is the fourth referendum on the issue for Western Australians in four successive decades. A three-year daylight saving trial concluded on March 30.
Mr Barnett said the result was a definitive No and no-one should go near the issue again for a long time in WA.
"For this generation there will be no daylight savings, I know some people will be upset about that but majority rules in this case," Mr Barnett told reporters.
"I'm sure the issue will come back at some stage but it should not be considered for another 20 years, in other words, until another generation can then have their say on it."
Western Australians have voted on the issue in referendums in 1975, 1984 and 1992, with the No vote succeeding each time.
This year's referendum cost $10 million, Mr Barnett said.