The fine autumn weather the region has been experiencing is set to change tomorrow as a low moves across the country.
MetService meteorologist Tom Bell said today would be the last day of sunny weather as a low in the Tasman was extending a trough over the country bringing rain tomorrow morning.
"The falls could get heavy in the ranges but elsewhere should just experience showers."
Mr Bell said the remains of Tropical Cyclone Donna could also play a part in the spell of rainy weather.
He said there was still uncertainty about where it would track but at this stage if the cyclone interacted with the trough the rain would be intensified.