Temperatures dropped to 2 degrees Celsius in parts of Auckland.

Aucklanders have made it through the region's coldest night so far this year.

First it was the rain and now it's the cold, with temperatures getting down as low as 2 degrees Celsius in parts of Auckland.

Metservice forecaster Mariken van Laanen said there had been some cold nights this month, with an average low of 11C for May, but Wednesday night's low took the cake.

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The MetService station in the north Auckland suburb of Whenuapai recorded the chilling temperature, with other parts of Auckland recording marginally warmer overnight lows. Central Auckland hit a low of 5C.

The cold snap was brought about by the clear skies, meaning a lack of insulation over the region, van Laanen said.

READ MORE: Cold night promises fine day for parts of country

While the clear skies had brought the cold, they would also make for a good start to the long weekend.

Auckland is in for some nice days with long, fine spells heading into Queen's Birthday weekend.

The good weather would hang around until Saturday but on Sunday "reasonable rain" would develop.

Thankfully, temperatures would also start to climb in the coming days, van Laanen said.

A high of 15C was expected on Thursday and an overnight low of 6C. Friday's low was expected to be 9C and overnight temperatures would creep up to 13C by the time the weekend arrived, she said.