S
M
T
W
T
F
S
26
81°
71°
27
81°
69°
28
81°
73°
29
81°
71°
30
81°
70°
1
80°
71°
2
81°
71°
3
80°
70°
4
81°
70°
5
81°
69°
6
80°
66°
7
81°
67°
8
80°
69°
9
79°
70°
10
81°
71°
11
81°
71°
12
82°
69°
13
82°
72°
14
81°
70°
15
80°
67°
16
83°
69°
17
82°
74°
18
82°
75°
19
81°
74°
20
81°
73°
21
81°
73°
22
80°
70°
23
80°
71°
24
81°
69°
25
83°
71°
26
80°
72°
27
82°
70°
28
81°
68°
29
81°
67°
30
83°
67°
31
84°
66°
1
83°
67°
2
84°
68°
3
83°
68°
4
84°
70°
5
83°
69°
6
80°
69°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Hanalei
Hanalei's May 2026 forecast shows daily high temperatures ranging from 80° to 84°, with overnight lows between 66° and 72°. The average high for May is 82° with an average low of 69°. 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 Hanalei. See also: June | July | August.