S
M
T
W
T
F
S
26
85°
72°
27
86°
73°
28
84°
74°
29
84°
72°
30
85°
71°
1
83°
73°
2
84°
71°
3
85°
72°
4
86°
73°
5
85°
77°
6
85°
74°
7
86°
73°
8
88°
73°
9
85°
75°
10
85°
72°
11
86°
73°
12
84°
71°
13
85°
71°
14
85°
73°
15
86°
74°
16
87°
74°
17
86°
75°
18
86°
79°
19
86°
78°
20
93°
77°
21
88°
77°
22
87°
75°
23
86°
73°
24
86°
72°
25
81°
63°
26
82°
63°
27
81°
62°
28
79°
66°
29
80°
65°
30
79°
66°
31
81°
65°
1
80°
67°
2
79°
65°
3
81°
66°
4
80°
66°
5
79°
65°
6
80°
66°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Waikoloa
Waikoloa's May 2026 forecast shows daily high temperatures ranging from 79° to 82°, with overnight lows between 62° and 67°. The average high for May is 80° with an average low of 65°. 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 Waikoloa. See also: June | July | August.
