S
M
T
W
T
F
S
26
61°
41°
27
71°
35°
28
60°
39°
29
62°
48°
30
61°
45°
1
63°
36°
2
59°
44°
3
60°
42°
4
72°
40°
5
82°
51°
6
70°
51°
7
64°
47°
8
63°
40°
9
59°
46°
10
71°
45°
11
63°
47°
12
67°
39°
13
70°
52°
14
63°
45°
15
67°
46°
16
78°
56°
17
84°
59°
18
87°
62°
19
93°
64°
20
85°
58°
21
69°
51°
22
70°
50°
23
70°
52°
24
75°
54°
25
77°
56°
26
79°
60°
27
81°
58°
28
72°
52°
29
71°
54°
30
72°
59°
31
78°
56°
1
72°
54°
2
73°
53°
3
71°
52°
4
73°
53°
5
74°
60°
6
79°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Wellington
Wellington's May 2026 forecast shows daily high temperatures ranging from 63° to 93°, with overnight lows between 45° and 64°. The average high for May is 76° with an average low of 55°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Wellington. See also: June | July | August.