Invercargill is set to swelter in 25C today, which would be its hottest October temperature on record. The mini heatwave settles over the lower South Island today, where Alexandra is forecast to hit 26C not only today but also tomorrow. MetService duty forecaster Nick Zachar said Christchurch, Wanaka and Blenheim would also be basking in summer-like temperatures today, expecting 24C. On Sunday, it clocked up a record high of 24C, but if it reaches 25C today - as forecast - it will set a record for October. However, it's not expected to get a lot hotter and a high of 20C is expected today.

Source: Otago Daily Times October 30, 2017 19:33 UTC