Large highs outside of the hot summer months can often drag in something gloomy – low cloud that blocks the sun. It’s referred to as “anti-cyclonic gloom” and is simply low cloud trapped under a high (cool nights and mild sea temperatures can help make the blanket of cloud, which can also include drizzle patches).
This weather often affects the coastal areas of the south and west of New Zealand – but can affect any coastal area. Those further inland tend to be sunny at the same time.
As the large high transfers from being Tasman Sea centred to Pacific Ocean centred it will shift windflows in New Zealand, even if only light – meaning Friday will be sunny and warmer in many places that have been cloudy in recent days.
The maps below indicate where clouds will likely be today and tomorrow…