A cold southwesterly airflow lies over New Zealand on Monday, unstable for some regions.

Showers for much of the North Island on Monday, sunny spells at times too. Showers for the areas marked in blue may be heavy with hail, perhaps also the chance of a thunderstorm. Showers easing in the evening with winds easing.

For the South Island conditions are mostly sunny however cloud builds a little in the upper half from afternoon, isolated heavy showers with a chance of hail from afternoon about Nelson / Marlborough. Banks Peninsula will see a few showers during the day with gusty cold southwesterlies.

The West Coast looks to have a mainly sunny day then as we venture into Southland and Otago expect showers for much of the day, heavy at first with a risk of hail then easing, snow flurries to 500m. Winds gusty about coastal areas.

Blue – Heavy form of precipitation or cold temperatures, typically below 1 to 2 degrees celsius.
White – Snow
Purple – Strong winds.
Yellow – Temperatures around the mid 20 degree mark or over.