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Sunday’s forecast: Big cold change moves up NZ as clocks spring forward an hour (+9 Maps)

A big temperature drop in parts of the South Island today and a cold front falls apart over the North Island bringing patchy rain and showers.

Single digit daytime highs are expected today in parts of Southland and Otago and tonight heavy frosts with lows down to -3 or below for Northland Southland, parts of Otago and frosts possible across the Canterbury plains overnight tonight. Below normal temperatures will impact many parts of the South Island today and most of NZ tonight.

It will be warmer than usual (due to the mild spring winds ahead of the cold front) in parts of the upper and eastern North Island.

Rain will also develop across the eastern North Island where it will be welcome by farmers and gardeners especially.

Most places that were windy yesterday have lighter winds today, but some areas will still have brisk winds (mostly sou’westers) in exposed coastal areas.

Rainfall — Check your local WeatherWatch or RuralWeather hyper-local rainfall forecast (it’s the most accurate in NZ and powered by IBM Watson).

Frosts — Check the Frost Forecaster exclusively at

Below Zero MapsExclusively found here.
Below Zero Map – Overnight Tonight/Monday AM
Exclusively found here:
Overnight Monday/Tuesday AM
Overnight Tonight

Have a great Sunday!


Dawn on 26/09/2021 6:07am

Might you know why the naval Joint Typhoon Warning Centre website doesn’t seem to work anymore please. It comes up ‘Server Not Found’. Thank you.

WW Forecast Team on 26/09/2021 9:16pm

Hi Dawn, not sure why but the JTWC has an awful server that crashes frequently – and has been this way for many years. Give in 5 mins and hit refresh and usually it will be back to life again!

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