Maximum temperatures will fluctuate through to the weekend, with the Port Macquarie-Hastings also likely to see the chance of some showers.
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Meteorologist with weatherzone Brett Dutschke said Wednesday will be the warmest day topping out at 26 degrees.
Tuesday will see a maximum of 22 degrees before a sea breeze kicks in and cools things down later in the afternoon.
We should see a relatively mild evening with an overnight minimum of about 9 degrees, he said.
"Wednesday will feature a sunny start although a few clouds are likely to roll in later in the day," Mr Dutschke said.
"There is also a chance of a few showers or even possible thunderstorms on the ranges. This chance is just ahead of a cooler change that will move through the area.
"As far as rainfall goes, the Port Macquarie-Hastings could see just 1mm or less, however, the further you head up the hill (onto the ranges) you are more likely to pick up around 5mm.
"Thursday's minimum is forecast at 8 degrees with a maximum of 20 degrees. It will be the windiest day with a southerly change coming through late."
Mr Dutschke said Thursday will be noticeably chilly in the wind, particularly in the morning and afternoon.
In between it will be reasonably sunny conditions although there will also be passing low cloud bringing a small chance of a shower very close to the coastline.
Showers are more likely further south around the Forster-Tuncurry area.
- Brett Dutschke
"Showers are more likely further south around the Forster-Tuncurry area," he added.
Friday will feature clearer skies with southerly winds easing. The minimum is 7 degrees with a maximum of 21 degrees.
Saturday will see a continuation of that trend with easing winds and slightly chillier in the morning with a 6 degree minimum and 22 degree maximum.
There will be plenty of sunshine before a sea breeze develops which will cool things slightly in the afternoon.
Sunday's minimum of 8 degrees and a maximum of 23 degrees will see the chance of a shower very late in the day off the back of another southerly change.
On the water, Wednesday will see waves picking up to between 2 metres and 2.5 metres offshore with northerly winds between 20 to 30 knots.
Thursday will see waves heights peak between 2.5 metres and 3 metres "very briefly" as the southerly change moves through. Winds will again be between 20 to 30 knots.
"That wave peak will progressively drop as the days follow," Mr Dutschke said.
