A nor’west flow is building across the country bringing warmer than average weather to every region at some point this week, more rain to the west and driest weather to the east.

Rain on West Coast will persist through Tuesday night. The total rain until Tuesday night will be considerable but not likely to reach warning levels.

The North Island will see clouds increase today and scattered patchy rain showers will spread from the evening tonight. Today is mostly dry.

In the eastern side of the South Island, clouds will be clearing this morning and sunny conditions prevail in the afternoon and into Wednesday.

Due to warm northerly flow and possibly Foehn effect, maximum temperatures in the eastern side of the South Island will be significantly higher than usual on Tuesday. There were frosts this morning in Hawke’s Bay but this trend persists into Wednesday and expands to the eastern North Island, with frosts not likely on Wednesday. Overnight lows tonight in the eastern North Island will be closer to +10 than 0C.

– WeatherWatch.co.nz