A slack pressure gradient brings light winds and potentially unstable conditions on Wednesday for some regions.

Sunny spells and plenty of high cloud for the upper North Island, chance of a shower mainly late afternoon / evening then clearing away. Light winds tend southwest for most.

Areas of cloud and some sun for the lower western North Island, showers develop in the afternoon possibly heavy (especially inland) then clearing overnight. Light winds tend southerly in the afternoon. Sunny areas and some high cloud along the east coast, a few isolated showers late afternoon / evening then easing overnight. Light winds tend southerly in the evening.

Chance of a morning shower in Wellington then expect cloudy areas with southerly winds.

Mostly sunny about Nelson and Marlborough then cloud builds in the afternoon bringing a few isolated showers, especially about inland areas where one or two may be heavy. Showers clear in the evening. Light winds. Any morning showers clear in Canterbury, mostly cloudy with southerlies tending easterly by midday. There may be a drizzle patch or two for inland areas during the day.

A mix of sun and cloud along the West Coast with light winds, isolated showers possible in the afternoon about Buller / Tasman some of which could become heavy then clearing in the evening. Cloudy areas and occasional sun about the lower South Island with light winds, afternoon westerlies for Southland. Southwesterlies tend easterly around midday about coastal Otago.