A northwesterly airflow increases over the South Island on Monday ahead of a front which moves onto the lower South Island around midday then the upper South Island in the evening. A ridge for the North Island gradually weakens.

A mainly sunny day for much of the North Island after a frosty start, some cloud starts to build in the southwest and some high cloud may spread to many regions by later in the evening. Overnight patchy showers or some rain moves into regions between Taranaki and Wellington.

Thick high cloud for the east of the South Island, a few spots of rain may spread from the west about the lower South Island around midday then further north in the evening. North Canterbury and Marlborough has a greater chance of some rain late evening / overnight.

Heavy rain pushes northwards along the West Coast during the day, gradually easing in behind as this rain band / front moves through.

Gusty northeasterlies about coastal Fiordland ease from afternoon, northwesterly winds through Cook Strait are brisk to strong at times during the day then easing around dawn on Tuesday.

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.

Not all regions and towns have been mentioned above. For specific 10 day information for your city, town, rural community or island please see the 1500 forecasts on our homepage!

– Aaron Wilkinson, WeatherWatch.co.nz