A volatile weather system is impacting New Zealand this weekend, bringing a stark contrast of conditions across the South Island. While parts of the region are bracing for sweltering heat, others are preparing for strong winds and heavy rainfall.
Heatwave Conditions
Four South Island towns – Motueka, Blenheim, Kaikōura, and Christchurch – are currently under heat alerts, with temperatures forecast to reach or exceed 30 degrees Celsius. In total, 14 towns and cities nationwide are experiencing heat alerts as temperatures climb. MetService has warned that “records could roll,” and Kerikeri already set a new January high on Saturday, reaching 32 degrees – surpassing the previous record of 31.2 degrees set in 1983.
The Public Health Service is cautioning that prolonged exposure to extreme heat can be fatal. Vulnerable populations – including babies, children, pregnant women, and individuals with pre-existing health conditions – are considered particularly at risk. Authorities advise avoiding outdoor activity during peak heat hours, staying hydrated, and wearing lightweight clothing. Plunket specifically advises against leaving children unattended in vehicles and emphasizes the importance of sun protection.
Wind and Rain Warnings
The approaching heat is coupled with a significant weather system bringing strong winds and heavy rain. An orange strong wind warning is in effect for the Tararua District, Wairarapa, and Wellington, beginning Saturday at 6:00 AM and lasting until early Monday morning. Severe gale northwest winds, gusting up to 120km/h, are anticipated.
MetService meteorologist Mmathapelo Makgabutlane explained that two weather systems are influencing the conditions. The first is bringing increased wind speeds and rainfall to western areas, while a larger system arriving on Sunday will intensify both rain and wind across much of the South Island. Norwester winds are expected to drive temperatures up and persist overnight.
Orange heavy rain warnings are in place for Westland and Fiordland, with potential rainfall totals of 240 to 300mm over a 30-hour period. Heavy rain watches are also active for the ranges of the Grey and Buller districts, as well as the headwaters of the Canterbury lakes and rivers. Strong wind watches extend to Marlborough, Canterbury, Otago, Southland, and Stewart Island.
Fire Risk and Preparedness
Fire and Emergency New Zealand has issued a warning that the weekend’s conditions represent a “perfect storm” for wildfires. The highest risk areas include Canterbury, Marlborough, Wairarapa, Hawke’s Bay, Tai Rāwhiti, and Northland. Fire restrictions are in place, ranging from total fire bans (red zones) to permit requirements (yellow zones). All permits in Canterbury are suspended until 8:00 AM on Monday.
Hastings District Council is urging residents to conserve water and remain alert to fire danger. Deputy mayor Michael Fowler stated, “Keep out of the heat, keep hydrated, look after your neighbours, look after your pets.” The council has closed Te Mata Park and instructed staff to avoid spark-generating work, but emphasizes the need for individual preparedness.
Frequently Asked Questions
What areas are currently under a heat alert?
Motueka, Blenheim, Kaikōura, Christchurch, Paihia and Russell, Whangārei, Whitianga, Tauranga, Whakatāne, Gisborne, Napier, Hastings, and Masterton are all under heat alerts.
What wind speeds are forecast for Wellington?
Severe gale northwest winds gusting to 120km/h are forecast for the Tararua District, Wairarapa and Wellington.
How much rain is expected in Westland and Fiordland?
Between 240 and 300mm of rain is expected in Westland and Fiordland over a 30-hour period.
As this complex weather system unfolds, residents are encouraged to stay informed and take necessary precautions to protect themselves and their communities.
