Daytime highs will be flirting with 30 tomorrow in Auckland and Hamilton.  In fact, many places on the western half of the North Island could wind up in the mid and upper 20s tomorrow.  On the east side Tauranga, Gisborne and Napier could’ve made a run for the 30 degree mark tomorrow if it wasn’t for the clouds and rain that are expected.  That will keep temps a bit cooler with highs in the lower 20s.

Mainland locations are likely to see highs in the low to mid 20s.

On the other side of the ditch, it will be a hot one for parts of eastern and southern Australia.  But the heat is not going to last long.

According to a story on Weatherzone.com.au,the heat which has building over the interior of WA will move across to SA and VIC, bringing with it high temperatures on Sunday.

Adelaide will see temperatures pushing to 39 degrees on Sunday, which is about 12 degrees above average for December. The northerly winds that will be transporting the hot airmass into southern Australia will also be very dry, leading to increased fire dangers.

Sunday temperatures in Melbourne will also reach into the high thirties. The city is forecast to reach 39 degrees, which will make it the hottest day of the month so far.

Relief from the heat for coastal SA will arrive later on Sunday with a cool southwesterly change, bringing the temperature down for Christmas. Temperatures will return to normal for Adelaide, around 26 degrees on Monday. On Christmas Day, the temperature will also sit in the mid twenties with mostly sunny skies.

For Melbourne, the cool change will arrive early on Monday morning. This will bring a few showers early on Christmas Eve with temperatures only reaching into the mid twenties. For Christmas Day in Melbourne, cool southerly winds will hold the temperature in the low twenties, but showers will clear to mostly sunny skies.

It will be a great day to head to the Boxing Day Test in Melbourne as skies remain clear and temperatures reach the mid twenties.

By Howard Joseph, WeatherWatch.co.nz and Weatherzone.com.au