S
M
T
W
T
F
S
26
71°
45°
27
70°
42°
28
71°
48°
29
71°
44°
30
70°
46°
1
71°
42°
2
70°
44°
3
67°
46°
4
71°
41°
5
85°
69°
6
85°
71°
7
86°
72°
8
84°
67°
9
84°
69°
10
87°
72°
11
89°
72°
12
88°
73°
13
87°
72°
14
88°
73°
15
86°
72°
16
86°
72°
17
85°
73°
18
86°
73°
19
86°
74°
20
83°
75°
21
84°
74°
22
83°
75°
23
83°
75°
24
84°
74°
25
83°
75°
26
83°
75°
27
84°
74°
28
83°
74°
29
83°
75°
30
84°
75°
31
84°
74°
1
83°
75°
2
84°
76°
3
85°
75°
4
84°
76°
5
84°
76°
6
85°
75°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Hapuna Beach State Park
Hapuna Beach State Park's May 2026 forecast shows daily high temperatures ranging from 83° to 89°, with overnight lows between 67° and 76°. The average high for May is 85° with an average low of 73°. 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 Hapuna Beach State Park. See also: June | July | August.