A dramatic shift in weather is forecast for the South Island as summer draws to a close, with a cold snap expected to bring significantly lower temperatures over the coming days. Even as much of the North Island and the northern reaches of the South Island enjoyed a warm Wednesday, with temperatures reaching the mid to late 20s Celsius, that warmth is set to be short-lived.
Meteorologists are predicting that a cold front will deliver “some of the coldest air of the year so far” to the South Island, impacting travel plans and daily life. The change will be particularly noticeable by Friday, with cities like Christchurch, Dunedin, and Invercargill bracing for a high of just 15 degrees Celsius – a stark contrast to recent summer warmth. The cooler conditions are expected to persist throughout the weekend.
Cold Fronts to Bring Chilly Conditions
The first cold front is expected to arrive Wednesday night, bringing cooler temperatures to Southland, Otago, Canterbury, and parts of Marlborough, according to MetService meteorologist Mmathapelo Makgabutlane. A second front arriving later in the weekend will reinforce the trend of cooler weather, particularly along the south and east coasts of both islands. “The South Island gets it from Friday and through the weekend but it does reach the North Island into Monday,” Makgabutlane stated.
NIWA meteorologist Chester Lampkin anticipates showers and even thunderstorms across parts of the South Island on Thursday as a west south-west change moves through. By Friday, temperatures are forecast to be 3 to 5 degrees Celsius below average for this time of year in the South Island. This significant drop in temperature is prompting residents to prepare for a return to cooler seasonal conditions.
Tropical Cyclone Season Monitoring
While the focus is on the immediate cold snap, meteorologists are similarly keeping a watchful eye on the broader weather patterns. It’s currently the middle of the tropical cyclone season, and a low-pressure system is forming near Vanuatu. Makgabutlane explained that the development and path of this system are being closely monitored. “It all depends on how it develops and also where it ends up moving… at this early stage it looks like it should be staying away from us but I think it is one to keep an eye on.” Daily updates on atmospheric conditions and tracking will be provided as the system evolves.
The approaching cold snap serves as a reminder of the changeable nature of New Zealand’s climate, even as summer officially winds down. Residents are advised to check the latest forecasts and prepare for the cooler conditions, especially if planning outdoor activities.
Looking ahead, meteorologists will continue to monitor both the cold front’s progression and the potential development of the tropical system near Vanuatu. Further updates will be provided as the situation unfolds, offering a clearer picture of the weather conditions expected in the coming days and weeks.
Have your say: How are you preparing for the change in weather? Share your thoughts in the comments below.