New Zealand is in for a hot summer with a high chance of above-average temperatures from November through to January.
NIWA says there's a 40-45 percent chance temperatures will be above average, and they could even climb into the 20s and 30s.
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"It is going to start off quite warm with some summer like spells over the coming weeks," meteorologist Ben Noll said in a video forecast.
But its' not going to kick in straight away, with MetService forecasting a wet and wild first week of November across the country.
"Week one looks very cold and wet but week two looks warm and dry. Nothing lasts forever, even cold November rain," MetService forecaster James Millward said.
But later in the month is proving hard to predict.
"Into the second half of the month, a settled Southern Ocean and occasional Tasman lows look set to bring us a real mixed bag. Pretty spring-like really," Mr Millward said.
But the next few months could prove challenging for farmers with low levels of rain forecast.
"In terms of rainfall, we don't see much of it in the eastern parts of the country as we go forward," Mr Noll said.
"This is a climate forecast so it gives you a broad sense of what to expect."
There are severe weather warnings in place overnight on Friday for wind and rain across the South Island, including Buller, Westland, Canterbury, Otago and Fiordland.