Frosts continue across the South Island as high pressure moves in with clearer skies and lighter winds, especially inland. Frosts extend further into the North Island on Sunday as the high grows over NZ.

But low pressure remains stuck over the very top of the country.

The low is weak but will drive in repetitive showers to some parts of Northland. Because the low is tapping into subtropical air some showers may turn to larger areas of rain and be heavy – but wet weather is not very widespread.

MetService has a severe weather watch for Northland, north of Kerikeri (a ‘watch’ meaning a rain warning is possible).

On Sunday a west to north-west wind develops in southern NZ. It’s not overly warm but it will help nudge temperatures up a little for southerners on Sunday PM and going across Monday.

• WeatherWatch.co.nz / RuralWeather.co.nz