S
M
T
W
T
F
S
26
89°
72°
27
86°
69°
28
86°
75°
29
86°
69°
30
91°
71°
1
89°
71°
2
96°
71°
3
78°
73°
4
80°
73°
5
84°
74°
6
88°
75°
7
93°
75°
8
89°
74°
9
86°
75°
10
87°
76°
11
88°
74°
12
90°
73°
13
88°
74°
14
87°
73°
15
88°
72°
16
87°
73°
17
83°
72°
18
83°
74°
19
84°
74°
20
85°
73°
21
84°
75°
22
84°
74°
23
83°
73°
24
83°
75°
25
84°
75°
26
84°
76°
27
86°
76°
28
85°
75°
29
83°
75°
30
84°
74°
31
83°
75°
1
84°
76°
2
85°
75°
3
85°
76°
4
86°
75°
5
85°
76°
6
84°
76°
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 78° to 93°, with overnight lows between 72° and 76°. The average high for May is 85° with an average low of 74°. 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.