Showers to clear overnight
Showers are expected to clear and westerlies should die away over Manawatu tonight.
MetService forecaster Bill Singh said there were some showers, mainly inland, but the rest was expected to ease.
"We're going for a minimum of 6 degrees Celsius tonight and a maximum of 17C tomorrow,'' Mr Singh said.
Tomorrow would be fine with an early mist possible and light winds. Sunday would likely become cloudy and bring late rain with gutsy northwesterlies.
A large anticyclone had dominated the country but it has now moved away, bringing wind and wet conditions.
Forecaster John Law said New Zealand had been sitting beneath a high pressure this week, which had kept a number of fronts away.
"However, this high will edge away during the weekend, allowing the developing system in the Tasman Sea to move towards the country,'' Mr Law said.
Winds were expected to increase and a strong wind warning had been issued for parts of Canterbury and Otago. Gales were expected to develop across Wellington as well as northern and western parts of Marlborough.
Heavy rain was also expected in parts of the country, and heavy rainfall warnings were in place for Fiordland and southern parts of Westland. A severe weather watch had also been issued for the Otago and Southland headwaters, northwest Nelson and Buller, and the remainder of Westland.
"By Sunday afternoon the heaviest rain should have cleared the south of the country. However, as this feature continues to move northwards, it does look to be a wet start to the week for the North Island,'' Mr Law said.