According to Weatherzone, the Mid North Coast region is expected to receive between anywhere from between 30mm upwards to 60mm between Wednesday, January 15 and Monday, January 20.

NSW RFS district officer Stuart Robb said the amount of rain won't be significant enough to see firefighters to the end of the bushfire season.

However, he said firefighters are quietly confident it will be help put moisture on the ground, particularly at Lindfield Park and Crestwood.

The overcast and cooler conditions which come with the predicted weather, will also go towards making the fire effort stronger.

Mr Robb is hoping the rain doesn't result in any heavy downpours, which could result in a number of issues.

He said heavy rain can cause ash run-off into waterways.

Heavy downpours can also make the fire zones more unstable, as Mr Robb said it can impact the stability of top soil and trees.

Mr Robb said in a dream world, it would be ideal if the region received 100mm gradually and over a week.

Weatherzone meteorologist Craig McIntosh said as of 1pm on Wednesday, January 15 the Port Macquarie airport had recorded 8mm of rain since 9am.

He said the rain will continue through the week and over the weekend.

Rainfall is heavier when accompanied with thunderstorms, and Mr McIntosh said storms are predicted for Friday and Saturday.