An unsettled westerly quarter airflow brings wet weather in the west on Monday with drier conditions out east, however a small low sitting east of the South Island encourages a southwest change to push northwards bringing rain or showers through into Canterbury by evening.
Showers or areas of rain may be heavy at times for most of tomorrow for the western North Island, winds will be breezy from the northwest, strong at times for some coastal areas. Thunderstorms are also possible, mainly Taranaki southwards during the day then moving northwards in the evening.
Along the east coast expect a mix of sun and cloud, the odd spot of rain may spread from the west at times (early morning may see more persistent rain then clearing), winds gusty from the northwest. Mild afternoon temperatures in the east, perhaps approaching the high teens.
Along the West Coast of the South Island expect rain with heavy falls and thunderstorms, gradually easing from afternoon. Strong northwesterly winds for the northeastern South Island in the morning, gales are possible with the odd shower spreading from the west. Clearing up in the afternoon with winds easing. Any thunderstorm activity in the North and South Islands on Monday comes with a risk of hail.
Dry first thing Banks Peninsula southwards then during the morning showers develop about Mid Canterbury southwards, turning to rain about North Otago and South Canterbury. In the evening showers spread northwards into the rest of Canterbury and conditions ease further south. Winds freshening from the southwest during the day. Any snow activity will be kept up high in the mountains.
Image: Monday 9th July 2018 3:00pm MSLP / Rain map – weathermap.co.nz