More heavy rain is on the way for parts of Canterbury recovering from flooding at the weekend.
The MetService said the amount of rain today could be significant for areas already affected by the heavy rain including South Canterbury, Otago and South Westland.
A front, preceded by a northerly flow, moves onto the lower South Island from the Tasman Sea during this afternoon, then works its way slowly north, before weakening tomorrow morning.
The front is expected to bring a period of rain to southern New Zealand, briefly heavy in the west, with persistent falls likely about eastern areas for a time, which may be significant for areas vulnerable from previous flooding.