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
80°
68°
17
80°
69°
18
79°
68°
19
80°
69°
20
81°
66°
21
80°
65°
22
79°
64°
23
77°
65°
24
78°
64°
25
78°
66°
26
79°
65°
27
78°
64°
28
78°
64°
29
77°
65°
30
73°
64°
31
74°
65°
1
74°
65°
2
75°
64°
3
73°
64°
4
73°
65°
5
74°
66°
6
74°
66°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Kealakekua
Kealakekua's May 2026 forecast shows daily high temperatures ranging from 73° to 81°, with overnight lows between 64° and 69°. The average high for May is 77° with an average low of 66°. 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 Kealakekua. See also: June | July | August.