S
M
T
W
T
F
S
26
80°
49°
27
71°
58°
28
72°
57°
29
75°
54°
30
67°
56°
1
61°
49°
2
65°
44°
3
69°
47°
4
71°
47°
5
73°
49°
6
72°
48°
7
72°
49°
8
72°
49°
9
70°
49°
10
75°
50°
11
78°
56°
12
79°
53°
13
74°
53°
14
66°
52°
15
66°
52°
16
67°
46°
17
69°
47°
18
69°
49°
19
76°
52°
20
78°
51°
21
72°
51°
22
66°
42°
23
62°
44°
24
67°
49°
25
71°
52°
26
73°
55°
27
71°
57°
28
67°
58°
29
66°
53°
30
67°
51°
31
65°
52°
1
66°
51°
2
67°
52°
3
66°
53°
4
67°
58°
5
70°
58°
6
66°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Wannanup
Wannanup's May 2026 forecast shows daily high temperatures ranging from 62° to 73°, with overnight lows between 42° and 58°. The average high for May is 67° with an average low of 53°. 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 Wannanup. See also: June | July | August.