Looking outside, it's going to be a beautiful day, with fresh southwesterlies easing.

For more on today's weather, watch Rosalie's latest outlook.

On Saturday, a ridge spreads over the North Island while a front approaches the southwest of the South Island, says MetService meteorologist Ciaran Doolin.

'This front moves up the South Island on Sunday, bringing heavy rain to the west and strong winds, then weakens as it moves onto the North Island early next week.”

With only nine sleeps till Christmas, the forecast for Christmas Day is top of mind for many.

The weather in the run up to Christmas is very changeable this year, with several weather systems due to arrive ahead of Santa.

At the moment, weather models are differing in their opinions for Christmas Day weather, so there is still considerable uncertainty in the forecast this far out.

'This degree of uncertainty means the current Christmas Day forecast may change as we move closer to the day, so it'll be wise to keep up to date with the latest forecast,” says communications meteorologist Lisa Murray.

'Although the forecasts for days 6-10 of the 10 day forecast on our website are handy for a longer-range heads-up, they are automatically generated by models.

'Once we're 5 days and closer to Christmas, our meteorologists write the forecasts which adds that extra expertise and local knowledge - meaning a more accurate prediction to help plan your day.”

Not forgetting the tropics, MetService is monitoring Tropical Depression TD04F currently located approximately 480 km northwest of Fiji's capital, Nadi.

With conditions favourable for further development, there is a high chance of TD04F being named as the first tropical cyclone of the South Pacific season in the next day or two.

The Fiji Meteorological Service has already issued heavy rain and flood warnings. At this stage, most weather models indicate a low likelihood of this system affecting New Zealand.