New South Wales irrigators could be facing a bumper summer, as water storages increase steadily across the state.

Giant June rain figures have saturated major dam catchments, and the Bureau of Meteorology’s predictions for a wetter than an average winter have stayed on track as well.

Water NSW’s Tony Webber says irrigators’ outlooks have improved greatly just a few months.

“Even though some of the follow up falls aren't as spectacular,” he said.

“Almost all of the rain that's falling is starting the tributaries and creeks running into the major waterways which are flowing into the dams.

“When you consider that at the end of March, we had Burrendong Dam at 10 per cent of capacity; we're now well towards 30 per cent and we're only halfway through a winter that the Bureau tells us will be wetter than average.”