Because New Zealand lies in the Southern Hemisphere, the warmest months are December, January and February, and the coldest June, July and August.
In summer days are long and sunny, nights are mild. Summer is an excellent time for walking or doing outdoor activities like water sports during summer.
In autumn, temperatures are a little cooler but it is possible to swim in some places until April. Colourful changing leaves make autumn a romantic time for walking.
In winter, mountains in both islands become snow-covered, providing beautiful views and excellent skiing.
Finally, New Zealand's spring weather can range from cold and frosty to warm and hot.