Tauranga's weather in the first six months of the year has been extreme with a drought in the first three months and above-average rainfall, temperatures and sunshine in the next three.
Heavy rain hit Tauranga on April 20, with houses and streets flooded and 433 incidents reported to city authorities.
A total of 218.8mm of rain fell and the most affected areas were Mount Maunganui, Papamoa, Otumoetai and Waihi Beach.
Before this event, Tauranga was in the middle of a drought and Bay of Plenty dairy farmers had forked out an extra $46million to pay for feed supplements. They also lost $27.6 million of income due to plummeting milk production.
Niwa climate principal scientist Brett Mullan said the first three months were characterised by drought.
"The rainfall was really low, January had hardly any rain at all. January, February and March were very dry and warmer than average and very sunny, although it's not surprising to have all these three go together.
"In mid-April, the skies opened up and you got a lot of rain, more than double the normal rainfall for the month."
Mr Mullan said for about 70 per cent of the region it was the worst drought in 41 years. After the drought came the flooding in mid-April, which Mr Mullan said was nothing out of the ordinary. "If you're in a drought, eventually it will break. The only way to break it quickly is with a lot of rain. The drought was well and truly broken in that part of the country by April."
As well as flooding, Tauranga was ranked fourth in the country for higher than average temperatures in April.
This pattern continued into May and June. Mr Mullan said the past three months had been wetter than average, but also warmer and sunnier than average - an unusual combination.
In the next three months, Mr Mullan was expecting the higher than average temperatures to continue.