A broad low pressure system affects the South Island on Monday, this low flings a front over the North Island during the day pushing in from the west.

For the western North Island skies are cloudy or becoming cloudy in the morning with rain or showers pushing in from the west, conditions ease late afternoon or evening as northwesterlies change to the west. The Bay Of Plenty has morning sun then cloud increasing from afternoon, rain moves in late afternoon or evening then eases overnight. High cloud for the east coast, a few spots of rain spreading into the Wairarapa then further north in the evening.

Cloudy for the West Coast of the South Island with showers, rain moves into Fiordland late afternoon. Morning showers for Nelson and Marlborough then sunny areas break through from afternoon, expect some high cloud though. Sunny areas and some high cloud for Canterbury and Otago with north to northwesterly winds. Southland has sunny areas and thickening cloud, some rain develops mid to late afternoon as light winds tend southerly.

Highs in the late teens or early twenties for the western North Island, getting into the mid to late twenties out east. The West Coast of the South Island has temperatures in the late teens, low twenties for Southland, Buller and Nelson. Otago, Canterbury and Marlborough sees highs in the mid to late twenties.

WeatherWatch.co.nz