High pressure covers most of New Zealand today, some instability this afternoon for the upper South Island and many North Island regions thanks to some cold upper air.

North Island

A mix of sun and cloud, morning fog possible in the southwest (Taranaki, Central North Island, Manawatu). Showers this morning Auckland / Coromandel northwards and along the coast for Bay Of Plenty, East Cape and down to Mahia Peninsula. Showers this afternoon developing for many, some becoming heavy with thunderstorms then easing later this evening or overnight. Taranaki down through to Kapiti and Wellington especially about the coast may stay mainly dry today. Winds are mostly light, tending to the southerly quarter this afternoon.

South Island

Areas of low cloud or fog this morning then partly cloudy skies, parts of coastal Canterbury may have a light shower. This afternoon isolated showers develop about some inland hills and ranges, showers about inland parts of the upper South Island (Buller in particular) this afternoon becoming heavy with thunderstorms possible then easing later on. Light winds generally tending to the south in the east, southwest in the west. Afternoon northerlies for Nelson.

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