However, another area of low pressure from the Tasman Sea would bring a fresh bout of rain and blustery conditions for the whole country on Wednesday, Mr Law said.
"The Tasman Sea has been a great area of development over the last few days, helping these areas of low pressure to form.
"Another area of wet and windy weather will sink southwards across the country from the Tasman around the middle of the week."
Mr Law said although the South Island was lucky to avoid the rain over the weekend, it was a different story this week.
"Over the weekend we had a broad area of high pressure -- an anticyclone -- right across the south of the country and this acted to block the rain from moving southwards.
"The next system to move across New Zealand isn't going to encounter the same situation so we are expecting the rain to reach right down to parts of the South Island."
A light northeasterly would be keeping spots closer to the east coast a little cooler and with a touch more cloud.
He said at the moment, high pressure looked to be the main feature over the country from next weekend, with the return of northerlies across the country in the lead-up to Christmas.
As for Christmas Day, computers would make their first 10-day forecast for Christmas tomorrow, Mr Law said.
"Although it is tempting to treat this forecast with the same level of trust as the forecasts for today and tomorrow, it is worth remembering that a lot can change in the next few days," Mr Law said.
Tomorrow's forecast:
Whangarei - Periods rain, late heavy falls. Easterly gales, gusts to 80 km/h. High 19C Low 16C
Auckland - Fine spells, but evening rain. Easterly winds, gusts to 70 km/h. High 20C Low 16C
Hamilton - Fine, cloud increasing evening. Fresh easterlies. High 22C Low 13C
Tauranga - Fine, but becoming cloudy evening. Easterly winds strengthen. High 21C Low 15C
Wellington - Fine. Light winds. High 23C Low 12C
Christchurch - Fine with northeast breezes. High 20C Low 11C
(Source: MetService)
