A weak ridge of high pressure moves onto the South Island on Wednesday morning, southwesterlies ease later in the day elsewhere.

A showery day for much of the North Island on Wednesday with fresh cool southwesterly winds, long dry spells develop by evening.

Showers clear for the upper South Island in the morning then sunny spells increase with southwesterlies easing. Becoming sunny early in the morning for the lower South Island, some cloud and drizzle moves into Fiordland in the evening.

By Weather Analyst Aaron Wilkinson – WeatherWatch.co.nz