New Zealand lies between 37 and 47 degrees south of the Tropic of Capricorn. Both the north and South Islands of New Zealand enjoy moderate, maritime climate, weather and temperatures.
Visit this link for detailed information on the climate and temperature range of New Zealand.Forecast and Weather Map
The weather is variable! New Zealand has a maritime climate strongly affected by its landforms - mainly the long, cloud-blocking spine of the Southern Alps, but also the high tableland around the Volcanic Plateau, which you as a determined visitor to Mordor will be visiting. In short, the weather is whatever the great Southern Ocean chooses to throw at us, and temperatures vary with your altitude. There is a lot of altitude to consider, for instance while scaling the location of Edoras which is surrounded by snowcapped mountains even in summer.
The eastern side of the alps - most of the South Island - tend to stay drier, but rain can arrive at any time. The secret to moving comfortably around New Zealand is layering your clothes so you can peel off or add on according to the conditions. Should you arrive and find that you have nothing warm/cool/waterproof enough, there is a dizzying array of locally-made clothes that will make up the lack, and they will be tempting you before you even leave the arrival lounge of the airport.