Orange mayor Cr Reg Kidd said the pool opened last week in time for the start of the school holidays after winter maintenance and re-tiling work was completed.

Several hardy swimmers, including the Cornally family, plunged into the pool at the Aquatic Centre on Monday.

With sunny days forecast and the temperatures tipped to be rising all week to reach a balmy 26 degrees by Friday it is expected many more people will be flocking to the centre soon.

The Aquatic Centre will also be in big demand through summer as the Level 5 water restrictions coming in on Sunday ban people topping up their backyard swimming pools and filling inflatable toddler pools.

Cr Kidd said Orange City Council was reviewing use of the Aquatic Centre in light of the changes.

"Council is intending to continue to make the town water available so this important facility can continue to operate. We're also exploring the use of water bores to supply the pool," he said.

Orange has recorded another month of below-average rainfall.

Just 58.8 millimetres of rain fell in September which is well below Orange's mean rainfall of 79.1 millimetres.

There were only seven days of rain in the month.