New Zealand Climate Weather
New Zealand is in the same hemisphere as South Africa and Australia, having a temperate climate with moderate, year-round rainfall and in the North Island especially, an absence of extreme temperatures. The country enjoys a pleasant and generally stable climate. 
The country is long and narrow, stretching a distance of 1600 kilometres in a North to South direction and being no more than 450 kilometres wide, at its widest point. The North and South Islands have a combined area of approximately 268,000 square kilometres. The sea moderates the climate bringing mild temperatures and a reliable climate throughout the year. 
The country is close to the International dateline and it is claimed that Gisborne, on the East Coast of the North Island is the first place in the world to see the light of each new day. October through to April are the warmest months and May to September are the coolest. A typical summers day in the North will range in temperature between 21 and 28 degrees centigrade (72 and 86 Fahrenheit), while a mid-winters day will rarely fall below 11 or 12 degrees centigrade (around 52 Fahrenheit). 
Snow is generally not seen at sea level, though there is an abundance of snow during winter in the South Island high country and in the mountain ranges in the North Island. Both the North and South Islands have ample winter ski fields, with the South Island renowned for the majesty of its mountains and beauty of its woodlands, lakes and rivers.
Nelson, at the top of the South Island is the sunniest city in the country, however most of the country enjoys over 2000 hours of sunshine per year.

 

Average Monthly Temperature and Rainfall by City

Auckland JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC
High 25c
77f
26c
79f
24c
76f
22c
72f
19c
66f
16c
61f
15c
59f
16c
61f
18c
64f
21c
70f
24c
75f
26c
79f
Low 15c
59f
16c
61f
14c
57f
12c
54f
10c
50f
7c
45f
5c
42f
8c
46f
9c
48f
11c
52f
13c
55f
14c
57f
Rainfall  (mm) 43 116 87 130 130 118 136 141 92 110 85 95

Christchurch JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC
High 24c
76f
24c
76f
22c
72f
20c
68f
18c
64f
14c
56f
12c
53f
15c
59f
19c
66f
20c
68f
21c
70f
24c
76f
Low 11c
52f
11c
52f
10c
50f
7c
45f
3c
36f
2c
35f
1c
34f
3c
36f
5c
41f
7c
45f
8c
46f
10c
50f
Rainfall  (mm) 48 37 60 60 81 50 64 45 38 35 47 48

Wellington JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC
High 25c
77f
24c
76f
22c
72f
20c
68f
19c
66f
17c
63f
16c
61f
17c
63f
18c
64f
19c
66f
21c
70f
22c
72f
Low 10c
50f
10c
50f
8c
46f
7c
45f
6c
43f
4c
39f
3c
37f
4c
39f
5c
41f
7c
45f
8c
46f
9c
48f
Rainfall  (mm) 79 80 85 98 121 124 139 120 99 104 87 89