A meeting with water licence holders in Forbes heard that without inflows into Wyangala Dam there will be no new allocation of water for irrigation this year, and an estimated 45 per cent of water held over from previous years is expected to be held back.

An announcement will be made on July 1, with representatives from Water NSW and the Department of Primary Industries touring affected areas to meet with affected farmers.

Lachlan Valley Water chairman Tom Green said irrigators were expecting the news.

"Inflows are below target and the lowest security licence begins to pick the shortfall up. I guess it's not unexpected that this will occur under the current conditions," he said.

The Bureau of Meteorology's winter outlook indicates we're unlikely to get the wetter than average winter we might have hoped for.

"South-eastern Australia could see a dry start to winter, with the models showing June rainfall is likely to be below average in NSW, Victoria, eastern South Australia, and southern parts of both Queensland and the Northern Territory," manager of long-range forecasting Dr Andrew Watkins said.

"In other parts of the country, there is no strong swing towards an exceptionally wetter or drier than average June."