Timaru's predicted high today of 19 degrees Celcius is expected to be "significantly cooler" than the 32deg C we basked in yesterday.
The town's temperature was the national high yesterday, MetService said.
By 10.15am the temperature was at 25deg c, reaching 32deg C in the early afternoon. A reading of 30deg C at Christchurch International Airport came a close second, duty forecaster Liz Walsh said.
However, the temperature dropped overnight as predicted, as a south-westerly change swept up the South Island.
Ms Walsh said the change would bring early morning rain to South Canterbury but would clear later.
- The Timaru Herald