Summer showed up late, and now it's taking off early for some in the deep south.
WeatherWatch head analyst Philip Duncan delivered the bad news this afternoon.
But some are likely already aware of the cold change.
"A cold change is sweeping up the South Island right now, tumbling temperatures by double digits in 10 minutes.
"Dunedin soared to 27C today and is now 16C. Some areas further south are even colder, only slightly above double digits."