New Zealand’s Alps have seen some early snowfalls in late June 2023, as a wintry storm brought freezing temperatures and snow down to 500m across the South Island, as well as to alpine areas of the North Island. The storm was a welcome change after a mild and wet start to winter, which officially began on June 1st according to meteorological standards. However, some argue that winter should start on June 21st, the winter solstice, when the sun reaches its lowest point in the sky.
The weather pattern that brought the snow to New Zealand’s Alps was influenced by a weakening La Nina, which has officially ended after a three-year run. La Nina is a climate phenomenon that causes warmer and wetter conditions over the country, especially in the north and east. It also contributed to a marine heatwave that surrounded the South Island, with sea surface temperatures 1.1°C to 1.8°C above average.
However, La Nina is expected to transition to El Nino during winter, with a potential for a strong event developing by spring. El Nino is the opposite of La Nina, causing cooler and drier conditions over the country, especially in the north and west. It also increases the influence of the Southern Ocean, leading to colder temperatures, stronger south-west winds, and more snow in Alpine areas.
The prospective El Nino is likely to affect the snow conditions for the rest of the season, as it did in previous years. According to The Grasshopper, a ski forecast expert, 2020 and 2021 were poor seasons overall, while 2022 was terrible for Ruapehu but good for ski resorts down south. The Grasshopper predicts that El Nino will bring more consistent and reliable snow to New Zealand’s Alps this winter, especially from July onwards.
The winter weather has also brought some challenges for travellers and residents, especially those who are not used to driving in snowy or icy conditions. Drivers are advised to check road conditions before travelling and carry snow chains if necessary. Some roads may be closed or restricted due to snow or ice. It is also important to dress warmly and stay hydrated in the cold weather.
The weather outlook for New Zealand is varied and unpredictable, as different climate drivers influence the patterns and trends. The Bureau of Meteorology provides regular updates and forecasts on its website and social media channels. For those who love snow, this week has been a treat, but for others it has been a challenge. Whatever the weather, it is always wise to be prepared and informed.
