S
M
T
W
T
F
S
26
62°
47°
27
60°
49°
28
59°
49°
29
61°
47°
30
64°
49°
1
62°
51°
2
70°
54°
3
69°
58°
4
73°
58°
5
64°
53°
6
58°
50°
7
62°
51°
8
59°
51°
9
66°
51°
10
62°
51°
11
64°
51°
12
68°
55°
13
63°
54°
14
63°
49°
15
57°
47°
16
57°
44°
17
62°
47°
18
62°
50°
19
63°
50°
20
64°
49°
21
68°
51°
22
70°
53°
23
66°
52°
24
65°
50°
25
60°
52°
26
60°
52°
27
70°
56°
28
73°
51°
29
62°
44°
30
62°
45°
31
63°
48°
1
69°
53°
2
74°
52°
3
70°
51°
4
68°
51°
5
69°
50°
6
66°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Mayne Island
Mayne Island's May 2026 forecast shows daily high temperatures ranging from 60° to 74°, with overnight lows between 44° and 56°. The average high for May is 67° with an average low of 50°. 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 Mayne Island. See also: June | July | August.