La Nina is expected to ease in early winter, but the Bureau of Meteorology says above average rainfall is expected to continue through winter from June to August.
Coastal areas experienced heavy rain over the past few days, playing havoc with sporting fixtures and worsening the widespread potholes across road networks.
Heavy rain hit the coast on Monday morning, with 50 millimetres recorded at Nobbys, 33mms at Williamtown and 33mms at Swansea in the 24 hours to 9am.
Nobbys also recorded 30mms in the 24 hours to 9am on Saturday.
Monthly rainfall figures at Nobbys shows 177mms fell in February, 161mms in March and 130mms in April. In May, 116mms have fallen so far. These figures, though, are a long way off the records of 559mms (February), 544mms (March), 546mms (April) and 441mms (May).
Average rain at Nobbys is 107mms (February), 120mms (March), 116mms (April) and 114mms (May).
Bureau of Meteorology engagement officer Morgan Pumpa said La Nina was "on the downward spiral, but it has remained steady".
"Early winter is when we may see it return to neutral," Ms Pumpa said.
However, she said above-average rainfall was expected through winter, even as La Nina declines.
Ms Pumpa said Newcastle had a reprieve from big rainfall numbers for most of May, despite heavy falls over the past few days,
"This week, Newcastle has some light rainfall on the forecast. It will continue to see that chance of rain over the next few days, although it is easing," she said.
A southerly change is expected later this week, which could bring more rain at the weekend.
"It's not expected to be severe weather," she said, but temperatures could fall to nine and 10 degrees.
The Newcastle Herald reported previously that the Cooranbong and Bulga weather stations broke rain records in March, recording 439mms and 377mms respectively. Records began in those areas 1903 and 1960.