A ridge of high pressure gradually weakens over New Zealand on Monday letting in a northerly airflow.
Expect a mix of mid and high level cloud for the upper North Island, winds are light from the north or northwest. There could be some low cloud or fog to start the day for inland areas. The lower North Island sees a similar story, winds are light tending onshore in the afternoon. The ranges of Wairarapa may see isolated showers in the afternoon / evening.
For the South Island, any lower level morning cloud in the east breaks away but expect plenty of high cloud during the day, light winds tend northeast in the afternoon. The West Coast is mostly cloudy with the odd shower, rain moves into Fiordland later in the evening or overnight.
Temperatures for the North Island mostly in the low to mid twenties, the warmest of those temperatures being about the Waikato, Bay Of Plenty and Northland. Temperatures in the high teens or early twenties for most of the South Island, getting into the mid twenties for the lower South Island however especially inland.
Image: Monday 11th March 2019 1:00pm MSLP / rain map – weathermap.co.nz