The country's skifields have had an early taste of snow, with 10-15cm falling yesterday on the upper slopes of Mt Ruapehu's Whakapapa field.
MetService spokesman Andy Downs said temperatures had fallen across New Zealand over the past few days as cold air from the south west moved up the country.
"It will stay fairly cold through the next few days. We expect it to continue on through until Friday, when things steady down and start to recover.
"And by the weekend it looks like we're back into a ridge of high pressure, with temperatures starting to recover again."
Early next week temperatures will be in the low 20C range, but will gradually drop in late April and early May.