S
M
T
W
T
F
S
29
76°
58°
30
76°
64°
31
69°
61°
1
71°
58°
2
71°
56°
3
74°
54°
4
73°
54°
5
73°
57°
6
72°
59°
7
68°
62°
8
73°
64°
9
72°
59°
10
73°
59°
11
73°
61°
12
69°
65°
13
74°
62°
14
68°
57°
15
67°
54°
16
67°
59°
17
69°
57°
18
73°
57°
19
70°
54°
20
68°
53°
21
65°
51°
22
64°
51°
23
60°
45°
24
62°
49°
25
65°
48°
26
66°
45°
27
67°
54°
28
68°
48°
29
69°
51°
30
69°
50°
1
64°
47°
2
66°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in South Island
South Island's April 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for April is ° with an average low of °. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how April weather will actually feel in South Island. See also: May | June | July.
