A severe weather watch has been issued for Wellington, Wairarapa and other parts of the North Island.
Heavy rain is expected to hit most of the North Island tonight and over the next two days.
"It's going to be damp and muggy and wet," MetService forecaster John Law said today.
Wellington would get heavy spells of rain from tonight, while the central North Island would experience the worst of the weather.
Heavy thundery downpours, strong wind gusts and hail were possible in areas north of Wairarapa and Manawatu.
Mr Law said temperatures would remain steady tomorrow and Wednesday, with Wellington likely to hover around 19 degrees Celsius and Wairarapa up to 24C.
A complex trough of low pressure over the Tasman Sea was moving slowly towards the country, directing the humid flow.
Mr Law advised people to keep up to date with the latest forecasts in case any of the areas in the watch were upgraded to warning level.
The storm comes on the heels of a glorious weekend during which temperatures around the country climbed towards 30 degrees Celsius. Blenheim and Masterton reached 29C, while Wellington and Auckland recorded 26C.
- The Dominion Post
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