The 12-month trial of all-night weekend public transport in Melbourne has been so popular, the Victorian Government says, it will be extended.

The trial was one of the Government's major election commitments in 2015.

Since January, 35,000 people have used the 300 trains, 250 trams and almost 500 buses that run every weekend.

"This really is a case of Victorians voting with their feet," Premier Daniel Andrews said.

"The early results are very, very encouraging.

Victoria's 24-hour public transport Trains leave Flinders Street Station every hour

Trains leave Flinders Street Station every hour Trams operate every 30 minutes on routes 19, 67, 75, 86, 96 and 109

Trams operate every 30 minutes on routes 19, 67, 75, 86, 96 and 109 V/Line coaches depart from Southern Cross Station at 2:00am for Bendigo, Ballarat, Traralgon and Geelong

"Importantly one in 5 of those 35,000 are in fact workers travelling to and from work, making us a 24-hour city."

Mr Andrews hoped patronage would continue to grow as more workers used the service.

The extension of the trail will cost $38.7 million.

Transport Minister Jacinta Allan said it was extended to give the Government the chance to properly assess the trial over a full year and to give certainty to event organisers.

"Melbourne is a year round city of activity and it's increasingly a 24-hour city, particularly on the weekends," she said.

"We want to take the opportunity to see how Night Network works across the four seasons of the city, and particularly as we go into a very busy spring and summer period with the football finals, the Spring Racing carnival, the festive season."

AFL chief executive Gillon McLachlan welcomed the extension.

"This flexibility this ability to get home when they want is a great initiative," he said.

"It helps not just football supporters but also cricket supporters and people enjoying the Melbourne summer."