Sneak peek at New Zealand's Christmas Day weather

It's the question on every Kiwi's lips - what will the weather do on Christmas? 

NIWA weather has released a tentative Christmas Day forecast - and the good news is it's looking pretty mild.

Most of the country is forecast to be fine this Christmas and Boxing Day.

Auckland and the upper North Island is predicted to be mostly dry with temperatures in the low 20s.

While the lower North may have a few showers, NIWA doesn't forecast anything heavy.

Wellington may see showers and the weather will be cooler. 

Temperatures for New Plymouth and Whanganui will be in the upper teens.

The East Coast is thought to be fine with dry conditions likely and warm days in the mid-20s.

The South Island is looking slightly less summery with scattered showers on the cards for the majority of the island. 

West Coast is likely to see rain, and all of the South Island will have cooler days than the average.

A few showers may hinder festivities but "compared to last year it's looking pretty good," said NIWA.

Last yeast more than 100 people were evacuated from Waihi Beach due to heavy flooding. 

Napier, Whanganui and the Coromandel Peninsula were all hit with torrential rain and thunderstorms which caused flooding and slips.