S
M
T
W
T
F
S
26
84°
67°
27
84°
63°
28
84°
70°
29
81°
70°
30
83°
70°
1
82°
69°
2
83°
70°
3
84°
71°
4
80°
68°
5
86°
68°
6
83°
65°
7
82°
72°
8
82°
69°
9
81°
70°
10
83°
72°
11
84°
72°
12
84°
72°
13
85°
72°
14
82°
71°
15
87°
67°
16
84°
68°
17
84°
70°
18
85°
68°
19
84°
71°
20
84°
70°
21
83°
69°
22
84°
70°
23
85°
69°
24
84°
70°
25
83°
68°
26
84°
71°
27
85°
69°
28
84°
68°
29
86°
68°
30
83°
71°
31
84°
70°
1
83°
71°
2
83°
71°
3
84°
70°
4
83°
71°
5
83°
71°
6
84°
70°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Wailuku
Wailuku's May 2026 forecast shows daily high temperatures ranging from 83° to 86°, with overnight lows between 68° and 71°. The average high for May is 84° with an average low of 70°. 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 Wailuku. See also: June | July | August.
